Relevant bibliographies by topics / Fluids motion

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Fluids motion'

Author: Grafiati
Published: 6 September 2023
Last updated: 19 July 2025

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Journal articles on the topic "Fluids motion"

1

Fetecau, Constantin, Tahir Mushtaq Qureshi, Abdul Rauf, and Dumitru Vieru. "On the Modified Stokes Second Problem for Maxwell Fluids with Linear Dependence of Viscosity on the Pressure." Symmetry 14, no. 2 (2022): 219. http://dx.doi.org/10.3390/sym14020219.

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The modified Stokes second problem for incompressible upper-convected Maxwell (UCM) fluids with linear dependence of viscosity on the pressure is analytically and numerically investigated. The fluid motion, between infinite horizontal parallel plates, is generated by the lower wall, which oscillates in its plane. The movement region of the fluid is symmetric with respect to the median plane, but its motion is asymmetric due to the boundary conditions. Closed-form expressions are found for the steady-state components of start-up solutions for non-dimensional velocity and the corresponding non-trivial shear and normal stresses. Similar solutions for the simple Couette flow are obtained as limiting cases of the solutions corresponding to the motion due to cosine oscillations of the wall. For validation, it is graphically proved that the start-up solutions (numerical solutions) converge to their steady-state components. Solutions for motions of ordinary incompressible UCM fluids performing the same motions are obtained as special cases of present results using asymptotic approximations of standard Bessel functions. The time needed to reach the permanent or steady state is also determined. This time is higher for motions of ordinary fluids, compared with motions of liquids with pressure-dependent viscosity. The impact of physical parameters on the fluid motion and the spatial–temporal distribution of start-up solutions are graphically investigated and discussed. Ordinary fluids move slower than fluids with pressure-dependent viscosity.
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Fetecau, Constantin, Dumitru Vieru, Abdul Rauf, and Tahir Mushtaq Qureshi. "STEADY-STATE SOLUTIONS FOR SOME MOTIONS OF MAXWELL FLUIDS WITH PRESSURE-DEPENDENCE OF VISCOSITY." Journal of Mathematical Sciences: Advances and Applications 68, no. 1 (2021): 1–28. http://dx.doi.org/10.18642/jmsaa_7100122224.

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Two isothermal motions of incompressible Maxwell fluids with power-law dependence of viscosity on the pressure are investigated when gravity effects are taken into account. The fluid motion, between two infinite horizontal parallel plates, is generated by the lower plate that applies a time-dependent shear stress to the fluid. Exact expressions are established for the steady-state components of the dimensionless start-up velocity, shear stress, and normal stress. They are used to find the needed time to touch the steady-state and to provide corresponding solutions for the motion of the same fluids induced by an exponential shear stress on the boundary. This time is useful for experimentalists who want to eliminate transients from their experiments. It is higher for motions of ordinary fluids as compared to fluids with pressure-dependent viscosity. The variation of starting solutions (numerical solutions) in time and space is graphically represented and some characteristics of the fluid motion are brought to light.
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Fetecau, Constantin, Dumitru Vieru, Waqas Nazeer, and Shehraz Akhtar. "Long-time solutions for some mixed boundary value problems depicting motions of a class of Maxwell fluids with pressure dependent viscosity." Open Journal of Mathematical Sciences 6, no. 1 (2022): 192–204. http://dx.doi.org/10.30538/oms2022.0188.

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Closed-form expressions are established for dimensionless long-tome solutions of some mixed initial-boundary value problems. They correspond to three isothermal unsteady motions of a class of incompressible Maxwell fluids with power-law dependence of viscosity on the pressure. The fluid motion, between infinite horizontal parallel flat plates, is induced by the lower plate that applies time-dependent shear stresses to the fluid. As a check of the obtained results, the similar solutions corresponding to the classical incompressible Maxwell fluids performing same motions are recovered as limiting cases of present solutions. Finally, some characteristics of fluid motion as well as the influence of pressure-viscosity coefficient on the fluid motion are graphically presented and discussed.
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Fetecau, Constantin, Dumitru Vieru, and Ahmed Zeeshan. "Analytical Solutions for Two Mixed Initial-Boundary Value Problems Corresponding to Unsteady Motions of Maxwell Fluids through a Porous Plate Channel." Mathematical Problems in Engineering 2021 (April 24, 2021): 1–13. http://dx.doi.org/10.1155/2021/5539007.

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Two unsteady motions of incompressible Maxwell fluids between infinite horizontal parallel plates embedded in a porous medium are analytically studied to get exact solutions using the finite Fourier cosine transform. The motion is induced by the lower plate that applies time-dependent shear stresses to the fluid. The solutions that have been obtained satisfy all imposed initial and boundary conditions. They can be easily reduced as limiting cases to known solutions for the incompressible Newtonian fluids. For a check of their correctness, the steady-state solutions are presented in different forms whose equivalence is graphically proved. The effects of physical parameters on the fluid motion are graphically emphasized and discussed. Required time to reach the steady-state is also determined. It is found that the steady-state is rather obtained for Newtonian fluids as compared with Maxwell fluids. Furthermore, the effect of the side walls on the fluid motion is more effective in the case of Newtonian fluids.
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Fetecau, Constantin, Dumitru Vieru, Tehseen Abbas, and Rahmat Ellahi. "Analytical Solutions of Upper Convected Maxwell Fluid with Exponential Dependence of Viscosity under the Influence of Pressure." Mathematics 9, no. 4 (2021): 334. http://dx.doi.org/10.3390/math9040334.

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Some unsteady motions of incompressible upper-convected Maxwell (UCM) fluids with exponential dependence of viscosity on the pressure are analytically studied. The fluid motion between two infinite horizontal parallel plates is generated by the lower plate, which applies time-dependent shear stresses to the fluid. Exact expressions, in terms of standard Bessel functions, are established both for the dimensionless velocity fields and the corresponding non-trivial shear stresses using the Laplace transform technique and suitable changes of the unknown function and the spatial variable in the transform domain. They represent the first exact solutions for unsteady motions of non-Newtonian fluids with pressure-dependent viscosity. The similar solutions corresponding to the flow of the same fluids due to an exponential shear stress on the boundary as well as the solutions of ordinary UCM fluids performing the same motions are obtained as limiting cases of present results. Furthermore, known solutions for unsteady motions of the incompressible Newtonian fluids with/without pressure-dependent viscosity induced by oscillatory or constant shear stresses on the boundary are also obtained as limiting cases. Finally, the influence of physical parameters on the fluid motion is graphically illustrated and discussed. It is found that fluids with pressure-dependent viscosity flow are slower when compared to ordinary fluids.
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Fetecau, Constantin, and Dumitru Vieru. "General Solutions for Some MHD Motions of Second-Grade Fluids between Parallel Plates Embedded in a Porous Medium." Symmetry 15, no. 1 (2023): 183. http://dx.doi.org/10.3390/sym15010183.

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General solutions are established for an initial boundary value problem by means of the integral transforms. They correspond to the isothermal MHD unidirectional motion of incompressible second-grade fluids between infinite horizontal parallel plates embedded in a porous medium. The fluid motion, which in some situations becomes symmetric with respect to the median plane, is generated by the two plates that apply time-dependent arbitrary shear stresses to the fluid. Closed-form expressions are established both for the fluid velocity and the corresponding non-trivial shear stress. Using an important remark regarding the governing equations of velocity and shear stress, exact general solutions are developed for similar motions of the same fluids when both plates move in their planes with arbitrary time-dependent velocities. The results that have been obtained here can generate exact solutions for any motion with the technical relevance of this type of incompressible second-grade fluids and their correctness being proved by comparing them with the numerical solution or with known results from the existing literature. Consequently, both motion problems of these fluids with shear stress or velocity on the boundary are completely solved.
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Fetecau, Constantin, Rahmat Ellahi, and Sadiq M. Sait. "Mathematical Analysis of Maxwell Fluid Flow through a Porous Plate Channel Induced by a Constantly Accelerating or Oscillating Wall." Mathematics 9, no. 1 (2021): 90. http://dx.doi.org/10.3390/math9010090.

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Exact expressions for dimensionless velocity and shear stress fields corresponding to two unsteady motions of incompressible upper-convected Maxwell (UCM) fluids through a plate channel are analytically established. The porous effects are taken into consideration. The fluid motion is generated by one of the plates which is moving in its plane and the obtained solutions satisfy all imposed initial and boundary conditions. The starting solutions corresponding to the oscillatory motion are presented as sum of their steady-state and transient components. They can be useful for those who want to eliminate the transients from their experiments. For a check of the obtained results, their steady-state components are presented in different forms whose equivalence is graphically illustrated. Analytical solutions for the incompressible Newtonian fluids performing the same motions are recovered as limiting cases of the presented results. The influence of physical parameters on the fluid motion is graphically shown and discussed. It is found that the Maxwell fluids flow slower as compared to Newtonian fluids. The required time to reach the steady-state is also presented. It is found that the presence of porous medium delays the appearance of the steady-state.
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Vieru, Dumitru, Constantin Fetecau, and Zulkhibri Ismail. "Magnetohydrodynamic Motions of Oldroyd-B Fluids in Infinite Circular Cylinder That Applies Longitudinal Shear Stresses to the Fluid or Rotates Around Its Axis." Mathematics 12, no. 20 (2024): 3207. http://dx.doi.org/10.3390/math12203207.

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Two classes of magnetohydrodynamic (MHD) motions of the incompressible Oldroyd-B fluids through an infinite cylinder are analytically investigated. General expressions are firstly established for shear stress and velocity fields corresponding to the motion induced by longitudinal shear stress on the boundary. For validation, the expression of the shear stress is determined by two different methods. Using an important remark regarding the governing equations for shear stress and fluid velocity corresponding to the two different motions, this expression is then used to provide the dimensionless velocity field of the MHD motion of the same fluids generated by a cylinder that rotates around its symmetry axis. Obtained results can generate exact solutions for any motion of this kind of Oldroyd-B fluids. Consequently, both types of motions are completely solved. For illustration, some case studies are considered, and adequate velocity fields are provided. The steady-state components of these velocities are presented in different forms whose equivalence is graphically proved. The influence of the magnetic field on the fluid behavior is graphically investigated. It was found that the fluid flows slower, and a steady state is earlier reached in the presence of a magnetic field. The fluid behavior when shear stress is given on the boundary is also investigated.
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Fetecau, Constantin, Dumitru Vieru, Abdul Rauf, and Tahir Mushtaq Qureshi. "Mixed initial-boundary value problems describing motions of Maxwell fluids with linear dependence of viscosity on the pressure." Zeitschrift für Naturforschung A 76, no. 12 (2021): 1107–24. http://dx.doi.org/10.1515/zna-2021-0212.

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Abstract Some mixed initial-boundary value problems are analytically studied. They correspond to unsteady motions of the incompressible upper-convected Maxwell (IUCM) fluids with linear dependence of viscosity on the pressure between infinite horizontal parallel plates. The fluid motion is generated by the upper plate that applies time-dependent shear stresses to the fluid. Exact solutions are established for the dimensionless velocity and nontrivial shear stress fields using a suitable change of the spatial variable and the Laplace transform technique. They are presented as sum of the steady-state and transient components and are used to determine the required time to reach the permanent state. Comparisons between exact and numerical solutions indicate an excellent agreement. Analytical solutions for the unsteady motion of the same fluids induced by an exponential shear stress on the boundary are obtained as limiting cases of the general solutions. Moreover, the steady-state solutions corresponding to the ordinary IUCM fluids performing the initial motions are provided by means of asymptotic approximations of standard Bessel functions. Finally, spatial variation of starting solutions and the influence of physical parameters on the fluid motion are graphically underlined and discussed.
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Fetecau, Constantin, Shehraz Akhtar, and Costică Moroşanu. "Porous and Magnetic Effects on Modified Stokes’ Problems for Generalized Burgers’ Fluids." Dynamics 3, no. 4 (2023): 803–19. http://dx.doi.org/10.3390/dynamics3040044.

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In this paper, exact analytical expressions are derived for dimensionless steady-state solutions corresponding to the modified Stokes’ problems for incompressible generalized Burgers’ fluids, considering the influence of porous and magnetic effects. Actually, these are the first exact solutions for such motions of these fluids. They can easily be particularized to give similar solutions for Newtonian, second-grade, Maxwell, Oldroyd-B and Burgers’ fluids. It is also proven that MHD motion problems of such fluids between infinite parallel plates can be investigated when shear stress is applied at the boundary. To validate the obtained results, the velocity fields are presented in two distinct forms, and their equivalence is proven through graphical representations. The obtained outcomes are utilized to determine the time required to reach a steady state and to elucidate the impacts of porous and magnetic parameters on the fluid motion. This investigation reveals that the attainment of a steady state occurs later when a porous medium or magnetic field is present. Additionally, the fluid’s flow resistance is augmented in the presence of a magnetic field or through a porous medium. Thus, as was expected, the fluid moves slower through porous media or in the presence of a magnetic field.
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Dissertations / Theses on the topic "Fluids motion"

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Rinawa, Moti Lal. "Nonlinear effects in magnetized fluids." Thesis, IIT Delhi, 2016. http://eprint.iitd.ac.in:80//handle/2074/8192.

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Das, Niranjan. "Some problem on wave motion on incompressible fluids." Thesis, University of North Bengal, 2004. http://hdl.handle.net/123456789/646.

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RIBEIRO, GERALDO AFONSO SPINELLI MARTINS. "DYNAMICS OF RELATIVE MOTION BETWEEN SOLID PARTICLES AND NON-NEWTONIAN FLUIDS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1987. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=19130@1.

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COMISSÃO NACIONAL DE ENERGIA NUCLEAR<br>Este trabalho descreve experimentos relacionamentos com o movimento relativo entre partículas sólidas e fluido não-newtoniano, confinados no interior de um duto circular. Medições da pressão dinâmica adicional, devida unicamente à presença da partícula (fonte de perturbação no escoamento) e do arrasto viscoso foram conduzidas de forma a se verificar a validade da Teoria de Brenner (1962). Esta teoria, já confirmada para fluidos newtonianos, permite que parâmetros característicos do escoamento perturbado sejam determinados, convenientemente, através de parâmetros do escoamento não-perturbado (ausência de partícula). Para o caso de fluido não-newtoniano, denominados puramente viscosos, do tipo Power-law, a teoria se mostrou perfeitamente aplicável. O valor da razão Delta P mais A/D descrito por Brenner foi confirmado com uma precisão de 3 por cento, num total de 70 experimentos realizados. Para fluidos não-newtonianos, viscoelásticos, com função viscosidade tipo Power-law, a validade da teoria parece, entretanto, depender de um parâmetro capaz de descrever na natureza constitutiva do fluido utilizado. Experimentos realizados com três diferentes fluidos viscoelásticos (expoentes power-law n igual 0,303; 0,343; 0,483) conduziram à identificação deste parâmetro, o Segundo Número Elástico, El2. Para valores de El2, inferiores a 14, caracterizando um escoamento predominantemente viscoso, o valor da razão Delta P mais A/D novamente é confirmado com precisão inferior a 4 por cento. Para valores de El2 superiores a 40 a razão Delta P mais A/D não mais pode ser avaliada com base em parâmetros do escoamento perturbado, analogamente ao que havia sido proposto por Brenner para o caso de fluidos newtonianos. Neste trabalho incluem-se também registros contínuos dos experimentos enfatizando os efeitos viscoelásticos envolvidos, bem como uma análise dos efeitos de parede associados ao movimento relativo entre fluidos não-newtonianos e partículas sólidas. Todos os experimentos foram realizados num regime de Reynolds variando de 0,1 a 90 e num regime de Weissenberg (calculando com base no modelo de Powell-Eyring) variando de 850 a 3800.<br>This work describes experiments related to relative motion between solid particles and mon-newtonian fluid, inside a circular duct. Measurements of the aditional dynamic pressure, due to the presence of the particle (a source of disturbance in the flow) ando f the viscous drag, were conducted to verify the validity of Brenner’s Theory (1962). This theory, already confirmed for newtonian fluids, allows the determination of the characteristic parameters of the disturbed flow using parameters of non-disturbed flow (without particle). In the case of purely viscous non-newtonian fluids, of the power-law type, the theory was confirmed. The value of the ratio Delta P plus A/D, described by Brenner, was confirmed. The value an accuracy of 3 per cent, in a total of 70 experiments. For viscoelastic fluids, with Power-law viscosity function, it appears that the validity of the theory depends on the Second Elastic Number, El2. Experiments conducted with three different viscoelastic fluids (power-law exponents, n equal 0,303; 0,343 and 0,483) shows that for values of El2 bellow 14, which characterizes a predominantly viscous flow, the value of of the ratio Delta P plus A/D is agair confirmed, with na accuracy of 4 per cent. For values of the El2, parameter above 40, the ratio Delta P plus A/D cannot be determined using parameters of the non-disturbed flow, as proposed by Brenner for newtonian fluids. In this work are also included graphic registers of the experiment, showing the complex viscoelastic effects, as well as na analysis of the wall effects associated with the relative motion between non- newtonian fluid and solid particles. All the experiments were conducted with Reynolds number between 0,1 and 90 and a Weissenberg number (based in Powell-Eyring model) between 850 and 38.00.
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Wang, Jin. "A numerical approach for the interfacial motion between two immiscible incompressible fluids." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1092675815.

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Thesis (Ph. D.)--Ohio State University, 2004.<br>Title from first page of PDF file. Document formatted into pages; contains xiii, 152 p.; also includes graphics. Includes bibliographical references (p. 147-152).
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Anekal, Samartha Guha. "Stokesian dynamic simulations and analyses of interfacial and bulk colloidal fluids." Texas A&M University, 2003. http://hdl.handle.net/1969.1/4434.

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Understanding dynamics of colloidal dispersions is important for several applications ranging from coatings such as paints to growing colloidal crystals for photonic bandgap materials. The research outlined in this dissertation describes the use of Monte Carlo and Stokesian Dynamic simulations to model colloidal dispersions, and the development of theoretical expressions to quantify and predict dynamics of colloidal dispersions. The emphasis is on accurately modeling conservative, Brownian, and hydrodynamic forces to model dynamics of colloidal dispersions. In addition, we develop theoretical expressions for quantifying self-diffusion in colloids interacting via different particle-particle and particle-wall potentials. Specifically, we have used simulations to quantitatively explain the observation of anomalous attraction between like-charged colloids, develop a new criterion for percolation in attractive colloidal fluids, and validate the use of analytical expressions for quantifying diffusion in interfacial colloidal fluids. The results of this work contribute to understanding dynamics in interfacial and bulk colloidal fluids.
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Lin, Po-Hsien. "Solving First-Order Hyperbolic Problems For Wave Motion in Nearly Incompressible fluids, Two-Phase Fluids, and Viscoelastic Media By the CESE Method." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1420552163.

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Mallett, Michael John Disney. "An analytical and computer modelling study of atomic motion in fluids constrained by barriers." Thesis, University of Kent, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358039.

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Maggistro, Rosario. "On some optimal control problems on networks, stratied domains, and controllability of motion in fluids." Doctoral thesis, Università degli studi di Trento, 2017. https://hdl.handle.net/11572/368468.

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The thesis deals with various problems arising in deterministic control, jumping processes and control for locomotion in fluids. It is divided in three parts. The first part is focused on some optimal control problems on network and stratified domains with junctions, where each edge/hyper-plane has its own controlled dynamics and cost. We consider some possible approximations for such a problems given by the use of a switching rule of delayed-relay type and study the passage to the limit when the parameter of the approximation goes to zero. First, we take into account some problems on network: a twofold junction problem, a threefold junction one and an extension of the last one. For each of these problems we characterize the limit functions as viscosity solution and maximal subsolution of a suitable Hamilton-Jacobi problem. Secondly, we consider a bi-dimensional multi-domain problem and as done for the problems on network we characterize the limit function as viscosity solution of a suitable Hamilton-Jacobi problem. The second part studies a decentralized routing problem over a network, using the paradigm of mean-field games with large number of players. Building on a state-space extension technique, we turn the problem into an optimal control one for each single player. The main contribution is an explicit expression of the optimal decentralized control which guarantees the convergence both to local and to global equilibrium points. Furthermore, we study the stability of the system also in the presence of a delay which we model using an hysteresis operator. As a result of the hysteresis, we prove existence of multiple equilibrium points and analyze convergence conditions. In the last part of the thesis we investigate different strategies to overcome the so-called scallop paradox concerning periodic locomotion in fluid. We show how to obtain a net motion exploiting the fluid's type change during a periodic deformation. We consider two different models: in the first one that change is linked to the magnitude of the opening and closing velocity of the scallop's valves. Instead, in the second one it is related to the sign of the above velocity. In both cases we prove that the mechanical system is controllable, i.e. the scallop is able to move both forward and backward using cyclical deformations.
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Maggistro, Rosario. "On some optimal control problems on networks, stratied domains, and controllability of motion in fluids." Doctoral thesis, University of Trento, 2017. http://eprints-phd.biblio.unitn.it/2556/1/PhDThesis.pdf.

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The thesis deals with various problems arising in deterministic control, jumping processes and control for locomotion in fluids. It is divided in three parts. The first part is focused on some optimal control problems on network and stratified domains with junctions, where each edge/hyper-plane has its own controlled dynamics and cost. We consider some possible approximations for such a problems given by the use of a switching rule of delayed-relay type and study the passage to the limit when the parameter of the approximation goes to zero. First, we take into account some problems on network: a twofold junction problem, a threefold junction one and an extension of the last one. For each of these problems we characterize the limit functions as viscosity solution and maximal subsolution of a suitable Hamilton-Jacobi problem. Secondly, we consider a bi-dimensional multi-domain problem and as done for the problems on network we characterize the limit function as viscosity solution of a suitable Hamilton-Jacobi problem. The second part studies a decentralized routing problem over a network, using the paradigm of mean-field games with large number of players. Building on a state-space extension technique, we turn the problem into an optimal control one for each single player. The main contribution is an explicit expression of the optimal decentralized control which guarantees the convergence both to local and to global equilibrium points. Furthermore, we study the stability of the system also in the presence of a delay which we model using an hysteresis operator. As a result of the hysteresis, we prove existence of multiple equilibrium points and analyze convergence conditions. In the last part of the thesis we investigate different strategies to overcome the so-called scallop paradox concerning periodic locomotion in fluid. We show how to obtain a net motion exploiting the fluid's type change during a periodic deformation. We consider two different models: in the first one that change is linked to the magnitude of the opening and closing velocity of the scallop's valves. Instead, in the second one it is related to the sign of the above velocity. In both cases we prove that the mechanical system is controllable, i.e. the scallop is able to move both forward and backward using cyclical deformations.
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Qu, Bo. "The use of fractional Brownian motion in the modelling of the dispersion of contaminants in fluids." Thesis, Edinburgh Napier University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285235.

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Books on the topic "Fluids motion"

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Kim, Tujin, and Daomin Cao. Equations of Motion for Incompressible Viscous Fluids. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-78659-5.

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Lighthill, M. J. Waves in fluids. Cambridge University Press, 2001.

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Caviglia, Giacomo. Inhomogeneous waves in solids and fluids. World Scientific, 1992.

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Guinot, Vincent. Wave propagation in fluids: Models and numerical techniques. ISTE/Wiley, 2008.

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Drumheller, D. S. Introduction to wave propagation in nonlinear fluids and solids. Cambridge University Press, 1998.

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Guinot, Vincent. Wave propagation in fluids: Models and numerical techniques. 2nd ed. ISTE, 2010.

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Marcello, Anile Angelo, ed. Ray methods for nonlinear waves in fluids and plasmas. Longman Scientific and Technical, 1993.

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1947-, Galdi Giovanni P., and International Centre for Mechanical Sciences., eds. Stability and wave propagation in fluids and solids. Springer-Verlag, 1995.

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H, Linke, and Månsson Alf, eds. Controlled nanoscale motion. Springer, 2007.

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Cawlfield, David E. UTAB: Mathematical model for the uptake, transport, and accumulation of inorganic and organic chemicals by plants. Agricultural Experiment Station, Oregon State University, 1991.

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Book chapters on the topic "Fluids motion"

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Hamill, Les. "Fluids in motion." In Understanding Hydraulics. Macmillan Education UK, 2011. http://dx.doi.org/10.1007/978-0-230-34586-7_4.

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Hamill, Les. "Fluids in Motion." In Understanding Hydraulics. Macmillan Education UK, 1995. http://dx.doi.org/10.1007/978-1-349-13296-6_4.

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Służalec, Andrzej. "Motion of Fluids." In Theory of Thermomechanical Processes in Welding. Springer Netherlands, 2005. http://dx.doi.org/10.1007/1-4020-2991-8_4.

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Massey, B. S. "The Principles of Fluid Motion." In Mechanics of Fluids. Springer US, 1989. http://dx.doi.org/10.1007/978-1-4899-3126-9_3.

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Massey, B. S. "The Principles of Fluid Motion." In Mechanics of Fluids. Springer US, 1989. http://dx.doi.org/10.1007/978-1-4615-7408-8_3.

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Lagrange, J. L. "The Motion of Incompressible Fluids." In Analytical Mechanics. Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-015-8903-1_19.

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Batu, Vedat. "Kinematics of Ideal Fluids Motion." In Fluid Mechanics and Hydraulics. CRC Press, 2024. http://dx.doi.org/10.1201/9781003457442-9.

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Kaushik, Mrinal. "Thermodynamics of Fluids in Motion." In Theoretical and Experimental Aerodynamics. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1678-4_8.

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Feireisl, Eduard, Mária Lukáčová-Medviďová, Hana Mizerová, and Bangwei She. "Equations Governing Fluids in Motion." In Numerical Analysis of Compressible Fluid Flows. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-73788-7_1.

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Potter, Merle C., and Elaine P. Scott. "Introduction to Fluids in Motion." In Thermal Sciences. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-63669-1_12.

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Conference papers on the topic "Fluids motion"

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Weiler, Marcel, Dan Koschier, and Jan Bender. "Projective fluids." In MiG '16: Motion In Games. ACM, 2016. http://dx.doi.org/10.1145/2994258.2994282.

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Tachibana, Rintarou, and Takayuki Saito. "A Relationship Between the Motion of a Zigzagging Bubble and its Surrounding Liquid Motion." In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajk2011-11010.

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In the present study, a mechanism of zigzagging bubble motion was experimentally and quantitatively investigated. We focused on a relationship between the bubble motion (gravity-center motion and surface motion) and its surrounding liquid motion. We visualized the bubble motion and its surrounding liquid motion simultaneously using IST (Infrared Shadow Technique) and SPIV (Stereo Particle Image Velocimetry). The interrogation areas were located just above a needle (just after bubble launch) to the first inversion of the zigzagging trajectory (transition from the linear to the zigzag). First, the bubble trajectory, the surface motion and the bubble inclination angle of major axis were obtained from the IST images. Second, the pseudo-3D motions (2D-3C velocity fields) of the surrounding liquid were calculated from the SPIV results. Based on the velocity data, we calculated the surrounding pressure field around the bubble by solving simplified Navier-Stokes Equation. Finally, from these results, we quantitatively discuss the close relationship between the bubble motion and its surrounding liquid motion. In particular, we discuss the mechanism of the zigzagging motion. At the inversion point, the shape deformation of the bubble and the fluctuation of the surrounding liquid motion show distinctive behavior. We tentatively consider that the zigzagging motion is caused by the periodical fluctuation of the bubble deformation (the surface motion and the inclination angle of major axis) and the surrounding liquid motion; i.e. the asymmetry of the surrounding liquid (velocity and pressure) induced by the bubble surface oscillation characterizes the zigzag motion.
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Ishioka, Hirotaka, Shoya Ota, Kosuke Nakasato, Keiji Onishi, and Makoto Tsubokura. "Coupled 6DoF Motion and Aerodynamics Simulation During Pass-By and Overtaken Motions." In ASME/JSME/KSME 2015 Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/ajkfluids2015-17714.

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Recently, unsteady aerodynamics has been drawing many attention because it is becoming clear that unsteady aerodynamics have a big effect on running stability, safety and ride comfort of vehicles. In order to estimate unsteady aerodynamics, it is necessary to reproduce the actual running condition including an atmospheric disturbance and vehicle motion. However, it is difficult to investigate the effect of unsteady aerodynamics in the road test because it has a lot of errors in measurement. In this study, a coupled simulation method between the 6DoF motion of a vehicle and aerodynamics was developed for these problems. Large Eddy Simulation (LES) was used to estimate the aerodynamics, and the motion equations of a vehicle was used to estimate vehicle motion. Vehicle motion in aerodynamic simulation was reproduced by using Arbitrary Lagrangian-Eulerian (ALE) method. In addition, sliding mesh method was used to reproduce overtaking and passing motions of two vehicles. By using the methods, aerodynamics and vehicle dynamics simulations are treated interactively (2-way) by exchanging each result at each time step. The 2-way results were compared with the 1-way coupled simulation estimating vehicle motion from aerodynamics results posteriori to investigate how vehicle’s motion itself further affects its aerodynamics during the pass-by and overtaking motions. Our main focus is, by using this method, to study the effect of unsteady aerodynamics on the running stability of a vehicle. The results of 1-way and 2-way coupling analysis showed difference with respect to behavior of a vehicle. It is believed that such differences result in the different aerodynamic forces and moments, which is caused by the vehicle’s posture changes in the 2-way coupling simulation.
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Ishii, Eiji, Yoshihito Yasukawa, Kazuki Yoshimura, and Kiyotaka Ogura. "Fuel-Spray Simulation With Valve Motion Perpendicular to Closing Direction." In ASME 2017 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/fedsm2017-69072.

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Particulate matter (PM) in exhaust gas from automotive engines causes air pollution. Multiple injections of fuel into the combustion chamber is one of the solutions to decrease PM; a uniform air/fuel mixture and short fuel-spray duration by using multiple injections are effective to decrease PM. To form the uniform air/fuel mixture, fuel sprays from fuel injectors needs to be uniform during injections. Unsteady valve-motions, especially those perpendicular to the closing direction, cause spray swings that form un-uniformity of air/fuel mixture. It is difficult to measure valve motions in the space of a few micrometer within a stainless steel body during fuel injections. Fuel-spray simulation is useful to study the effect of valve motion on the un-uniformity of fuel sprays. In fuel-spray simulation, jets passing through nozzles need to be simulated with the valve motion. We previously developed a particle/grid hybrid method that integrated the inner flow simulation using a grid method with a fuel breakup simulation using a particle method. In this study, we studied the effects of valve motions perpendicular to the closing direction on fuel sprays in order to decrease the un-uniformity of air/fuel mixture. First, we observed fuel-spray behaviors during measurements; a fuel injector with multi-holes was selected, and spray patterns were recorded by a CCD camera with a Xenon flash lamp. The jets passing through the nozzles changed their profiles over time, and the widths of the jets changed from thin to thick at almost the same time. The simulated spray behaviors with valve motion in the front-to-rear direction showed the same trends as those in measurement. It is assumed that because the positions of the six nozzles on the orifice cup were assigned asymmetrically in the front-to-rear direction, asymmetric flow distribution caused the valve motion.
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Andreev, A. F. "Charge motion in solid helium." In Symposium on quantum fluids and solids−1989. AIP, 1989. http://dx.doi.org/10.1063/1.38789.

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Nečasová, Š. "Motion of Fluids in the Moving Domain." In Topical Problems of Fluid Mechanics 2024. Institute of Thermomechanics of the Czech Academy of Sciences; CTU in Prague Faculty of Mech. Engineering Dept. Tech. Mathematics, 2024. http://dx.doi.org/10.14311/tpfm.2024.019.

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Molki, Majid. "THE SWIRLING MOTION OF DRIBBLING HONEY." In 5th Thermal and Fluids Engineering Conference (TFEC). Begellhouse, 2020. http://dx.doi.org/10.1615/tfec2020.fnc.031576.

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Zhu, Qinsheng, and Peter E. Clark. "Periodic Motion in Multiparticle Settling." In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-0450.

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Abstract Particle settling in quiescent fluids is important in many industrial processes. Single particle settling in Newtonian fluids has been studied extensively. Less work has been done in non-Newtonian fluids using both single and multiple particles. Two or more particles settling in non-Newtonian fluids exhibit unusual behavior that includes simple interactions to form a coupled pair and periodic motion in which the particles preform a complex “dance” as they move through the fluid. This paper describes some preliminary work on the periodic motion observed in three and four particle systems.
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Kratschun, Filipp, Tobias Mielke, and Katharina Schmitz. "Water Vapour Cavitation in Hydraulic Fluids." In BATH/ASME 2018 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/fpmc2018-8872.

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Cavitation in hydraulic systems leads to cavitation erosion which ultimately results in system failure [1, 2] and the reduction of the systems’ stiffness. There are three types of cavitation known: gas, vapour and pseudo cavitation [3]. In previous gas-cavitation studies enormous air release rates in hydraulic fluids have been discovered which could not be explained just by the diffusion of dissolved air through bubble’s boundary. A possible explanation is the simultaneous occurrence of vapour cavitation in conjunction with gas-cavitation. However, this requires drastic pressure drops below several Pa, which is hard to achieve in hydraulic systems. This article introduces a further hypothesis for the unexplainable air release rates as fourth type of cavitation. Technical fluids can dissolve other fluids, such as water, to a degree which evaporate at much higher pressures compared to the base fluid. Based on a standard HLP 46 hydraulic oil and water as dissolved fluid, the presented hypothesis is verified. Firstly, a phenomenological mathematical model is developed. Subsequently, a test rig is presented to prove the hypothesis.
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Mochizuki, O. "Micro Vortex Flow Induced by Small Life." In ASME/JSME 2007 5th Joint Fluids Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/fedsm2007-37034.

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We investigated the relations between swimming motions and flow fields around plankton that is a larva of brine-shrimp (Artemia salina) and jellyfish (Aurelia aurita). These move in low Reynolds numbers by flapping motion in common. We recorded motions and flow by using a high speed CCD camera, and analyzed by a motion analysis and PIV method. We observed vortex pairs in each case as a result of power stroke and recovery stroke of pitching motion. Force acting on the body was estimated by measured acceleration of the body. Mechanism of generation of thrust force related to vortex pairs by flapping motion in low Reynolds number environment was discussed in this paper.
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Reports on the topic "Fluids motion"

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Apps, Christopher, and Tyler Johnson. PR244-173902-R01 On-water Leak Detection System Evaluation. Pipeline Research Council International, Inc. (PRCI), 2018. http://dx.doi.org/10.55274/r0011504.

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The hydrocarbon industry is directing efforts towards reducing the environmental impact of operation through improving pipeline performance and addressing evolving regulatory requirements. As a result, many different external leak detection technologies have been recently developed; however, it is challenging to test these systems with real hydrocarbon products. The research project described herein evaluated the performance of six external leak detection systems intended to identify the presence of hydrocarbon products on the surface of water. The scope was limited to an idealized freshwater environment. Tests were conducted with five hydrocarbon test fluids (gasoline, diesel, Synthetic Sweet Blend, Access Western Blend and Cold Lake Blend) along with three additional test fluids (canola oil, salt water and motor oil). Canola oil was considered as a candidate surrogate fluid and salt water as a possible source of false alarms, while motor oil was considered as a candidate surrogate fluid or a false alarm trigger, depending on the field application. Testing was performed by releasing each test fluid onto the surface of a water basin with six sensors located equidistant from the release point. Each sensor's response to contact with the test fluid was monitored and compared based on time to detection and estimated slick thickness at detection.
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2

Herbert, T. Unsteady Fluid Motion in Liquid Filled Projectiles. Defense Technical Information Center, 1998. http://dx.doi.org/10.21236/ada343142.

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Kim, Sangtae. The Motion of Ellipsoids in a Second Order Fluid. Defense Technical Information Center, 1985. http://dx.doi.org/10.21236/ada160973.

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Chen, S. S., S. Zhu, and J. A. Jendrzejczyk. Motion-dependent fluid forces acting on tube arrays in crossflow. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10189487.

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Klammler, Harald. Introduction to the Mechanics of Flow and Transport for Groundwater Scientists. The Groundwater Project, 2023. http://dx.doi.org/10.21083/gxat7083.

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Starting from Newton’s laws of motion and viscosity, this book is an introduction to fundamental aspects of fluid dynamics that are most relevant to groundwater scientists. Based on a perspective of driving versus resisting forces that govern the motion of a fluid, the author derives Darcy’s law for flow through porous media by drawing an analogy to Bernoulli’s law for fluid with negligible viscosity. By combining the effects of gravity and pressure, the author identifies hydraulic head as a convenient numerical quantity to represent the force driving groundwater flow. In contrast to the physical derivation of hydraulic head, hydraulic conductivity emerges as a parameter related to the resisting frictional forces between the mobile fluid and the stationary porous medium. These frictional seepage forces also affect the effective stress state of the porous medium, thus establishing a link to soil stability and quicksand formation. Combining Darcy’s law with the law of mass conservation leads the reader to the fundamental equations of saturated groundwater flow. Finally, the effects of capillary forces are included to establish the governing equations for unsaturated and multi-phase flow. Throughout the book, the author focuses on thoroughly illustrating and deriving the equations while applying order of magnitude analyses. This approach makes it possible to extract the most information, for example in terms of the scale of response time, without requiring explicit solutions. A number of boxes and solved exercises contain further details and links to practical applications such as the water table ratio that reflects ‘fullness’ of an aquifer and the performance of slug tests for in situ measurement of hydraulic conductivity. This book makes an important contribution to groundwater science by providing a progressive introductory explanation of the physical mechanics of groundwater flow and the accompanying socioeconomic and ecological problems that may arise.
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Pandare, Aditya, and Christopher Long. Coupling hydrodynamics to a rigid-body motion solver for fluid-structure interaction. Office of Scientific and Technical Information (OSTI), 2023. http://dx.doi.org/10.2172/2217470.

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Nohel, J. A., R. L. Pego, and A. E. Tzavaras. Stability of Discontinuous Shearing Motions of a Non-Newtonian Fluid. Defense Technical Information Center, 1989. http://dx.doi.org/10.21236/ada210643.

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Frymier, P. D. Jr. Bacterial migration and motion in a fluid phase and near a solid surface. Office of Scientific and Technical Information (OSTI), 1995. http://dx.doi.org/10.2172/573237.

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Uhlman, J. S., and Jr. An Integral Equation Formulation of the Equations of Motion of an Incompressible Fluid. Defense Technical Information Center, 1992. http://dx.doi.org/10.21236/ada416252.

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Weinacht, Paul. Prediction of Projectile Performance, Stability, and Free-Flight Motion Using Computational Fluid Dynamics. Defense Technical Information Center, 2003. http://dx.doi.org/10.21236/ada417123.

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