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Littérature scientifique sur le sujet « Non-simple fluid »

Auteur : Grafiati
Publié le 9 mars 2023
Mis à jour le 19 juillet 2025

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Articles de revues sur le sujet "Non-simple fluid"

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Zatloukal, Martin. "A simple phenomenological non-Newtonian fluid model." Journal of Non-Newtonian Fluid Mechanics 165, no. 11-12 (2010): 592–95. http://dx.doi.org/10.1016/j.jnnfm.2010.02.019.

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Teja, Amyn S., and Tongfan Sun. "A simple non-classical equation of state for fluids and fluid mixtures." Fluid Phase Equilibria 161, no. 1 (1999): 63–76. http://dx.doi.org/10.1016/s0378-3812(99)00161-2.

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ZHOU, SHIQI. "EXTENDING SIMPLE WEIGHTED DENSITY APPROXIMATION FOR HARD SPHERE FLUID TO LENNARD–JONES FLUID (I): TEST." International Journal of Modern Physics B 19, no. 32 (2005): 4701–21. http://dx.doi.org/10.1142/s0217979205033078.

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A theoretical formalism which can be combined with any hard sphere density functional approximations (DFA) to construct DFA for non-hard sphere fluids with a hard or soft core subjected to diverse external potentials is proposed. To show validity and power of the present formalism, we employ a simple weighted density approximation as an illustrating example. It is found that the resultant DFA for Lennard–Jones fluid under influences of diverse extenal potentials is in generally satisfactory agreement with corresponding simulational results even though the co-existence bulk fluid in the particl
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Payam, A. F., W. Trewby, and K. Voïtchovsky. "Simultaneous viscosity and density measurement of small volumes of liquids using a vibrating microcantilever." Analyst 142, no. 9 (2017): 1492–98. http://dx.doi.org/10.1039/c6an02674e.

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An analytical model is derived to calculate the viscosity and density of small volumes of fluid from the resonance frequencies of an immersed microcantilever. Its accuracy is verified on simple and non-Newtonian fluids.
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Fujitani, Youhei. "A Simple Formulation of Non-Equilibrium Thermodynamics of a Polarizable Fluid." Journal of the Physical Society of Japan 70, no. 6 (2001): 1556–64. http://dx.doi.org/10.1143/jpsj.70.1556.

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Dai, F., and M. M. Khonsari. "A Theory of Hydrodynamic Lubrication Involving the Mixture of Two Fluids." Journal of Applied Mechanics 61, no. 3 (1994): 634–41. http://dx.doi.org/10.1115/1.2901507.

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Based on the principles of continuum mechanics, we drive the governing equations for the hydrodynamic lubrication involving the mixture of two incompressible fluids. The governing equations are general in the sense that they can be applied to the mixture of any simple non-Newtonian fluid with a Newtonian fluid. A mixture thus formed is considered to be nonhomogeneous and non-Newtonian. In the theoretical development, the interaction between the constituents is taken into consideration. It is shown that a number of currently available models are special cases of the theory presented in this pap
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Lenci, Alessandro, and Luca Chiapponi. "An Experimental Setup to Investigate Non-Newtonian Fluid Flow in Variable Aperture Channels." Water 12, no. 5 (2020): 1284. http://dx.doi.org/10.3390/w12051284.

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Non-Newtonian fluid flow in porous and fractured media is of considerable technical and environmental interest. Here, the flow of a non-Newtonian fluid in a variable aperture fracture is studied theoretically, experimentally and numerically. We consider a shear-thinning power-law fluid with flow behavior index n. The natural logarithm of the fracture aperture is a two-dimensional, spatially homogeneous and correlated Gaussian random field. An experimental device has been conceived and realized to allow the validation of the theory, and several tests are conducted with Newtonian and shear-thinn
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H. M. Almahdawi, Faleh, Ahmed Zarzor Al-Yaseri, and Nagham Jasim. "Apparent Viscosity Direct from Marsh Funnel Test." Iraqi Journal of Chemical and Petroleum Engineering 15, no. 1 (2014): 51–57. http://dx.doi.org/10.31699/ijcpe.2014.1.6.

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Accurate and simple techniques for measurement of fluid rheological properties are important for field operations in the oil industry. Marsh Funnels are popular quality-control tools used in the field for drilling fluids and they offer a simple, practical alternative to viscosity measurement. In the normal measurements, a single point (drainage time) is used to determine an average viscosity; little additional information is extracted regarding the non-Newtonian behavior of the fluid.Here, a new model is developed and used to determine the rheological properties of drilling muds and other non-
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Ayub, Syahrial, Hikmawati Hikmawati, Ni Nyoman Sri Putu Verawati, and Muhammad Zuhdi. "PENGEMBANGAN KIT FLUIDA ALTERNATIF YANG BERASAL DARI SAMPAH ANORGANIK UNTUK PEMBELAJARAN FISIKA." ORBITA: Jurnal Kajian, Inovasi dan Aplikasi Pendidikan Fisika 5, no. 2 (2019): 59. http://dx.doi.org/10.31764/orbita.v5i2.1185.

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ABSTRAKPenelitian ini bertujuan mengembangkan kit fluida alternatif pada pembelajaran fisika. Kit fluida alternatif ini dibuat dengan memanfaatkan sampah anorganik yang sudah tidak digunakan. Sampah anorganik adalah sampah yang dihasilkan dari bahan-bahan non-hayati, baik berupa produk sintetik maupun hasil proses teknologi pengolahan bahan tambang atau sumber daya alam dan tidak dapat diuraikan oleh alam, seperti botol plastik, tas plastik, kaleng dan lain-lain. Alat-alat yang terdapat pada kit fluida alternatif adalah alat peraga kapal selam sederhana, alat peraga aliran air, alat peraga pom
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Hegaj, Efim, and Evgeny Borzenko. "Numerical Simulation of the Steady-State Herschel-Bulkley Fluid Flow in a Channel with Sudden Expansion." Key Engineering Materials 743 (July 2017): 474–79. http://dx.doi.org/10.4028/www.scientific.net/kem.743.474.

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In this paper, the steady-state flow of non-Newtonian fluid in a planar channel with sudden expansion is investigated. The rheological behavior of this media is described by the Herschel-Bulkley model. To determine both steady-state velocity and pressure fields, a numerical algorithm based on the relaxation method and SIMPLE procedure is used.The mathematical problem statement includes three non-dimensional parameters: the Reynolds number, the Bingham number (non-dimensional viscoplasticity parameter), and the power-law index. The results of numerical simulation are obtained in a range of the
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Thèses sur le sujet "Non-simple fluid"

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GIUSTERI, GIULIO GIUSEPPE. "Higher-grandient theories for fluids and concentrated effects." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2012. http://hdl.handle.net/10281/28154.

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I consider the Virtual Power framework for Continuum Mechanics, which has recently gained considerable attention, mainly in connection with its applicability to non-classical models for materials. I introduce a geometrical approach to possibly infinite dimensional dynamical systems, based on the theory of Banach manifolds, which has not yet been fully exploited in Continuum Mechanics, though it has been used in some particular cases. This theory generalizes the Virtual Power framework, being even more flexible and allowing for the construction of continuum mechanical models on non-Euclidean do
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Murray, Stuart William. "Wave radiation in simple geophysical models." Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/7922.

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Wave radiation is an important process in many geophysical flows. In particular, it is by wave radiation that flows may adjust to a state for which the dynamics is slow. Such a state is described as “balanced”, meaning there is an approximate balance between the Coriolis force and horizontal pressure gradients, and between buoyancy and vertical pressure gradients. In this thesis, wave radiation processes relevant to these enormously complex flows are studied through the use of some highly simplified models, and a parallel aim is to develop accurate numerical techniques for doing so. This thesi
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Dupuis, Victor. "Étude expérimentale d’écoulements soumis à une transition longitudinale de rugosité en lit simple et en lit composé." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1154/document.

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Ce travail de thèse s'intéresse à l'effet d'une variation longitudinale de l'occupation du sol de la plaine d'inondation sur l'écoulement d'une rivière en débordement. Nous traitons le cas d'une transition entre une zone de prairie et une zone de forêt, et vice versa. Cette variation d'occupation du sol est associée à une transition de rugosité hydraulique entre une rugosité de fond (prairie fortement immergée) et des macro-rugosités émergées (arbres), modélisées respectivement par une moquette plastifiée et par un champ de cylindres. Ces écoulements sont étudiés en laboratoire dans un canal d
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Hopkins, Alan John. "Computer simulation studies of dense suspension rheology : computational studies of model sheared fluids : elucidation, interpretation and description of the observed rheological behaviour of simple colloidal suspensions in the granulo-viscous domain by non-equilibrium particulate dynamics." Thesis, University of Bradford, 1989. http://hdl.handle.net/10454/4408.

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Rheological properties of idealised models which exhibit all the non-Newtonian flow phenomenology commonly seen in dense suspensions are investigated by particulate-dynamics computer-simulations. The objectives of these investigations are: (i) to establish the origins of various aspects of dense suspension rheology such as shear-thinning, shear thickening and dilatancy; (ii) to elucidate the different regions of a typical dense suspension rheogram by examining underlying structures and shear induced anisotropies in kinetic energy, diffusivity and pressure; (iii) to investigate the scaling of t
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TOKAS, SULEKH. "PERFORMANCE ANALYSIS OF SIMPLE-T AND 3DHELICAL PASSIVE MICROMIXERS WITH NEWTONIAN AND NON-NEWTONIAN FLUID." Thesis, 2020. http://dspace.dtu.ac.in:8080/jspui/handle/repository/18072.

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Mixing at micro-scales is purely governed by the diffusion mass transport phenomenon, which is a time-consuming process requiring a prolonged length of the microchannel to obtain desired results. The present study proposes a novel three-dimensional helical micromixer (TDHM) with a rectangular cross-section to achieve splendid mixing performance within a short distance contrary to the simple T-micromixer (STM). A thorough numerical investigation of mixing performance and fluid flow patterns have been conducted using the continuity, species transport, and the Navier-stokes equations with
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Livres sur le sujet "Non-simple fluid"

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Abdelattif, Engy, and Anthony J. Freemont. Assessment of synovial joint fluid. Oxford University Press, 2013. http://dx.doi.org/10.1093/med/9780199642489.003.0072.

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Assessment of synovial joint fluid is a simple, cheap, and relatively non-invasive test that can be applied to the whole spectrum of joint diseases, provided there is sufficient fluid within the joint to aspirate. The chapter outlines the key steps in undertaking microscopic analysis of synovial fluid in order to maximize the diagnostic and prognostic return, while placing the features seen within the context of some of the most important joint diseases. The chapter also examines the changing face of microbiological examination of synovial fluid to diagnose joint infection as a primary event a
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Abdelattif, Engy, Anthony J. Freemont, and DC Mangham. Assessment of synovial joint fluid. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199642489.003.0072_update_002.

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Assessment of synovial joint fluid is a simple, cheap, and relatively non-invasive test that can be applied to the whole spectrum of joint diseases, provided there is sufficient fluid within the joint to aspirate. The chapter outlines the key steps in undertaking microscopic analysis of synovial fluid in order to maximize the diagnostic and prognostic return, while placing the features seen within the context of some of the most important joint diseases. The chapter also examines the changing face of microbiological examination of synovial fluid to diagnose joint infection as a primary event a
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Campbell, Eric W. Commands in Zenzontepec Chatino (Otomanguean). Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198803225.003.0005.

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This chapter presents Zenzontepec Chatino (Otomanguean, Zapotecan) data from naturally occurring discourse and describes the linguistic resources that speakers draw from to express a wide range of command types. Canonical imperatives, addressee-directed commands of basic force, are morphologically complex and display many forms for one category, determined by the inflectional class of the verb. In contrast, all non-canonical directives, those targeting first or third persons or the negative second person directives, are formally simple, all being expressed with Potential Mood inflection (one c
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Escudier, Marcel. Units of measurement, dimensions, and dimensional analysis. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198719878.003.0003.

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In this chapter the crucial role of units and dimensions in the analysis of any problem involving physical quantities is explained. The International System of Units (SI) is introduced. The major advantage of collecting the physical quantities, which are included in either a theoretical analysis or an experiment, into non-dimensional groups is shown to be a reduction in the number of quantities which need to be considered separately. This process, known as dimensional analysis, is based upon the principle of dimensional homogeneity. Buckingham’s Π‎ theorem is introduced as a method for determi
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Bradford, University of, ed. Computer simulation studies of dense suspension rheology: Comutational studies of model sheared fluids; elucidation, interpretation and description of the observed rheological behaviour of simple colloidal suspensions in the granulo-viscous domain by non-equilibrium particulate dynamics. 1989.

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Chapitres de livres sur le sujet "Non-simple fluid"

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Heinen, Matthias, Simon Homes, Gabriela Guevara-Carrion, and Jadran Vrabec. "Mass Transport Across Droplet Interfaces by Atomistic Simulations." In Fluid Mechanics and Its Applications. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-09008-0_13.

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AbstractDue to availability of powerful computers and efficient algorithms, physical processes occurring at the micrometer scale can nowadays be studied with atomistic simulations. In the framework of the collaborative research center SFB-TRR75 “Droplet dynamics under extreme ambient conditions”, investigations of the mass transport across vapour-liquid interfaces are conducted. Non-equilibrium molecular dynamics simulation is employed to study single- and two-phase shock tube scenarios for a simple noble gas-like fluid. The generated data show an excellent agreement with computational fluid dynamics simulations. Further, particle and energy flux during evaporation are sampled and analysed with respect to their dependence on the interface temperature, employing a newly developed method which ensures a stationary process. In this context, the interface properties between liquid nitrogen and hydrogen under strong gradients of temperature and composition are investigated. Moreover, the Fick diffusion coefficient of strongly diluted species in supercritical CO$$_{2}$$ 2 is predicted by equilibrium molecular dynamics simulation and the Green-Kubo formalism. These results are employed to assess the performance of several predictive equations from the literature.
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Cifani, Paolo, Sagy Ephrati, and Milo Viviani. "Sparse-Stochastic Model Reduction for 2D Euler Equations." In Mathematics of Planet Earth. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-40094-0_2.

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AbstractThe 2D Euler equations are a simple but rich set of non-linear PDEs that describe the evolution of an ideal inviscid fluid, for which one dimension is negligible. Solving these equations numerically can be extremely demanding. Several techniques to obtain fast and accurate simulations have been developed during the last decades. In this paper, we present a novel approach that combines recent developments in stochastic model reduction and conservative semi-discretization of the Euler equations. In particular, starting from the Zeitlin model on the 2-sphere, we derive reduced dynamics for large scales and we close the equations either deterministically or with a suitable stochastic term. Numerical experiments show that, after an initial turbulent regime, the influence of small scales to large scales is negligible, even though a non-zero transfer of energy among different modes is present.
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Lomba, Enrique. "On the Non-Solution Region of the Hypernetted Chain and Related Equations for Ionic and Simple Fluids." In Supercritical Fluids. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-015-8295-7_12.

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"The Non-Uniform State for a Simple Gas." In Fluid Mechanics and Its Applications. Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-5865-3_5.

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Carpenter, P. W. "THE HYDRODYNAMIC STABILITY OF FLOWS OVER SIMPLE NON-ISOTROPIC COMPLIANT SURFACES." In Frontiers of Fluid Mechanics. Elsevier, 1988. http://dx.doi.org/10.1016/b978-0-08-036232-8.50039-6.

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"Fluid Mechanics." In Chemical Engineering Explained: Basic Concepts for Novices. The Royal Society of Chemistry, 2017. http://dx.doi.org/10.1039/bk9781782628613-00189.

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How do gases and liquids move through pipe networks? We begin by considering the difference between laminar and turbulent flow, and the different types of flow we will see when liquid and gas phases are flowing within the one pipe. A section of the chapter is devoted to pipes and the different types of valves found in processing plants. Examples illustrate how to calculate the pressure drop in simple pipes, and Newtonian and non-Newtonian fluids, flow under a pressure driving force, and more complex pipe runs that contain valves and other fittings. We then consider the operation and design of different types of pumps and how they may be selected to meet a range of pumping tasks.
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Abdelattif, Engy, Anthony J. Freemont, and DC Mangham. "Assessment of synovial joint fluid." In Oxford Textbook of Rheumatology. Oxford University Press, 2013. http://dx.doi.org/10.1093/med/9780199642489.003.0072_update_003.

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Assessment of synovial fluid is a simple, cheap, and relatively non-invasive test that can be applied to the whole spectrum of joint diseases, provided there is sufficient fluid within the joint to aspirate. The chapter outlines the key steps in undertaking microscopic analysis of synovial fluid in order to maximize the diagnostic and prognostic return, while placing the features seen within the context of some of the most important joint diseases. The chapter also examines the changing face of microbiological examination of synovial fluid to diagnose joint infection as a primary event and also the increasingly important problem of infection secondary to joint replacement surgery.
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"Viscometric and Elongational Flows." In Engineering Rheology, edited by Roger I. Tanner. Oxford University PressOxford, 2000. http://dx.doi.org/10.1093/oso/9780198564737.003.0003.

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Abstract In this chapter we consider some special, but very common, classes of flows applicable to a very wide group of liquids. This approach contrasts with that used in the classical theory of linearly viscous (Newtonian) fluids, in which a special kind of fluid description is used to examine a very wide class of flow fields. We first discuss those motions called viscometric, which are motions substantially equivalent to steady simple shearing, such as Poiseuille and Couette flows, but we do not make any very restrictive prior assumption about the nature of the relation between stress and deformation in the fluids considered. We then consider unsteady shearing flows, again without much restriction on fluid response, and then a class of simple elongational flows, in which the stress system is easily deduced from symmetry. We also consider the problem of wall slip and adherence. The fluids are supposed to be incompressible, and no thermal effects are considered. Non-isothermal flows are considered in Chapter 9. The viscometric motions discussed here can be visualized in terms of sheaf of inextensible material surfaces in relative sliding motion, but the elongational flows are not so readily defined in geometrical terms.
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Göçmen, Dilara. "Perioperative fluid management." In New Insights in Perioperative Care. IntechOpen, 2024. http://dx.doi.org/10.5772/intechopen.1005313.

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Perioperative fluid management is a critical aspect of surgical care, containing the preoperative, intraoperative, and postoperative phases. Management of patients without individualisation, utilizing established standard protocols, may lead to undesirable events such as hypovolaemia and hypervolaemia during both intraoperative and postoperative periods. Insufficient fluid administration can result in peripheral vasoconstriction, leading to decreased oxygen delivery, impaired tissue perfusion, and dysfunction of vital peripheral organs. Conversely, excessive fluid administration may cause increased vascular permeability due to glycocalyx damage, tissue oedema, impaired tissue perfusion, local inflammation, delayed wound healing, wound infection, and anastomotic leaks. The pursuit of an optimal fluid regimen that prevents volume overload while maximizing tissue perfusion has led to the adoption of individualized, targeted fluid replacement therapies, supported by advancing technology. In this approach, basic physiological variables related to cardiac output or global oxygen distribution are measured. In optimized fluid management, fluid replacement is adjusted according to targeted physiological variables in a continuously re-evaluated process. These physiological variables can be assessed using different methods, from simple tests to complex devices that evaluate the patient’s tissue perfusion and cardiac output. Developments in recent years have drawn attention to the future of non-invasive or less invasive cardiac output measurement devices, as well as the utilization of ultrasonographic cardiac output measurements.
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Succi, Sauro. "Finale: Who Needs Lbe?" In The Lattice Boltzmann Equation for Fluid Dynamics and Beyond. Oxford University PressOxford, 2001. http://dx.doi.org/10.1093/oso/9780198503989.003.0015.

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Abstract After so much ado about lattice Boltzmann it is worth taking a final step back and asking a very simple question: who needs LBE? The views can be quite disparate. Some authors, including one of the originators, seem to regard it as just ‘yet another finite difference scheme’.56 In a much more enthusiastic vein, some others claim that LBE and LGA might even represent a new paradigm in non-equilibrium statistical physics.
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Actes de conférences sur le sujet "Non-simple fluid"

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ARMFIELD, S. "Analysis of simple type algorithms on staggered and non-staggered grids." In 1st National Fluid Dynamics Conference. American Institute of Aeronautics and Astronautics, 1988. http://dx.doi.org/10.2514/6.1988-3528.

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Chang, Sin-Chung, Ching Loh, Sheng-Tao Yu, et al. "Robust and simple non-reflecting boundary conditions for the space-time conservation element and solution element method." In 13th Computational Fluid Dynamics Conference. American Institute of Aeronautics and Astronautics, 1997. http://dx.doi.org/10.2514/6.1997-2077.

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Vradis, George C. "Heat Transfer and Fluid Mechanics of Herschel-Bulkley Fluids." In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-0452.

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Abstract A comprehensive review of the heat transfer phenomena related to the flow of purely viscous non-Newtonian fluids exhibiting a yield stress in some simple and complex geometries is presented. Both attached and separated flows of Bingham and Herschel-Bulkley fluids are discussed. The presence of a yield-stress is shown to significantly impact the heat transfer and flow characteristics, as compared to those in the case of a Newtonian fluid, in particular in the cases where separation of the flow would be expected.
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van de Hoek, P. J. "A Simple and Accurate Description of Non-linear Fluid Leak-off in High-Permeability Fracturing." In SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers, 2000. http://dx.doi.org/10.2118/63239-ms.

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Uhlíř, V., T. Bodnár, and M. Caggio. "Numerical Assessment of Stratification Influence in Simple Algebraic Turbulence Model." In Topical Problems of Fluid Mechanics 2022. Institute of Thermomechanics of the Czech Academy of Sciences, 2022. http://dx.doi.org/10.14311/tpfm.2022.022.

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This paper presents rst few results obtained using a newly developed test code aimed at validation and cross-comparison of turbulence models to be applied in environmental flows. A simple code based on nite di erence discretization is constructed to solve steady flows of incompresible non-homogeneous (variable denstity) fluids. For the rst tests a simple algebraic turbulence model was implemented, containing stability function depending on the stratification via the gradient Richardson number. Numerical tests were performed in order to explore the capabilities of the new code and to get some i
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Caggio, M., M. Schmid, J. Valášek, Š. Nečasová, T. Bodnár, and O. Starynskyi. "Aeroacoustic Simulations in Thermally Non-Homogeneous Fluid Flows." In Topical Problems of Fluid Mechanics 2025. Institute of Thermomechanics of the Czech Academy of Sciences; CTU in Prague Faculty of Mech. Engineering Dept. Tech. Mathematics, 2025. https://doi.org/10.14311/tpfm.2025.005.

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The cooling system, comprising heat exchangers and cooling fans, is essential for maintaining the power performance and acceptable operational conditions of a vehicle. However, running of the cooling fan produces unwanted noise, which often becomes dominant sound produced by the vehicle. To model the noise generated by turbulent flow and heat transfer around cooling fan blades, an appropriate flow model is essential. This study employs the compressible Navier-Stokes equations with an restricted relation between temperature and density for efficient handling of non-homogeneous temperature field
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Kehler, Patrik, Nicolas Arenas, Ferdinand Meixner, et al. "Non-Newtonian Fluid Apparent Viscosity Correlation Between Experimental Data and Computational Fluid Dynamics Results, A Case Study From Automatic Transmission Fluid Filtration Industry." In ASME 2022 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/imece2022-96025.

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Abstract Evidence of a Non-Newtonian behavior of automatic transmission fluid at sub-zero conditions was presented by several authors such as Khalil et. al. Accurate viscosity data of this fluid at cold conditions are critical, especially in the very competitive automotive industry. The proper design of a transmission fluid filter, this is, the calculation of the effective area of filtration media, depends heavily on this information. Technical difficulties of viscosity measurements by different shear rates at subzero conditions are driven by its cost and accuracy. In order to solve this issue
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Sigrist, Jean Franc¸ois, Christian Laine, and Bernard Peseux. "Dynamic Analysis of a Coupled Fluid Structure Problem With Fluid Sloshing." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-3043.

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The present paper is related to the study of a generic linear coupled fluid/structure problem, in which an elastic beam is coupled with an inviscid fluid, with or without sloshing effects. A previous study [18] focussed on added mass effects; the present study is devoted to the coupling effects between fluid sloshing modes and structure with fluid added mass modes. The discretization of the coupled linear equations is performed with an axisymmetric fluid pressure formulated element, expanded in terms of a FOURIER series [14]. Various linear fluid model are taken into account (compressible, unc
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Suchý, J., and T. Hyhlík. "Experimental Determination of Frequency of Laminar-Boundary Layer Instability Noise of NACA 0012." 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.2024.029.

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This paper presents simple method and new results of experimental investigation of laminar boundary-layer instability noise of an airfoil. The experimental method is based on small electret microphones, which are built in to the surface of the measured airfoil segment in pinholes. The paper discusses evaluation of the experimentally obtained data and presents new results for laminar boundary-layer vortex-shedding tonal sound frequency of NACA 0012. The main attribute of the proposed experimental method is the possibility of its usage in a non-aeroacoustic facility.
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Fullmer, William D., Alejandro Clausse, Avinash Vaidheeswaran, and Martin A. Lopez de Bertodano. "Numerical Solution of Wavy-Stratified Fluid-Fluid Flow With the One-Dimensional Two-Fluid Model: Stability, Boundedness, Convergence and Chaos." In ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting collocated with the ASME 2014 12th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/fedsm2014-22121.

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In this paper the one-dimensional two-fluid model is used to dynamically simulate slightly inclined fluid-fluid flow in a rectangular channel. By that, it is specifically meant that the solutions exhibit a wavy pattern arising from the inherent instability of the model. The conditions and experimental data of Thorpe (1969) are used for comparison. The linear instability of the model is regularized, i.e., made well-posed, with surface tension and axial turbulent stress with a simple turbulent viscosity model. Nonlinear analysis in an infinite domain demonstrates for the first time one-dimension
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Rapports d'organisations sur le sujet "Non-simple fluid"

1

Ayoul-Guilmard, Q., S. Ganesh, M. Nuñez, et al. D5.4 Report on MLMC for time dependent problems. Scipedia, 2021. http://dx.doi.org/10.23967/exaqute.2021.2.005.

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In this report, we study the use of Multi-Level Monte Carlo (MLMC) methods for time dependent problems. It was found that the usability of MLMC methods depends strongly on whether or not the underlying time dependent problem is chaotic in nature. Numerical experiments are conducted on both simple problems, as well as fluid flow problems of practical interest to the ExaQUte project, to demonstrate this. For the non-chaotic cases, the hypotheses that enable the use of MLMC methods were found to be satisfied. For the chaotic cases, especially the case of high Reynolds’ number fluid flow, the hypo
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Bajwa, Abdullah, Tim Kroeger, and Timothy Jacobs. PR-457-17201-R04 Residual Gas Fraction Estimation Based on Measured Engine Parameters - Phase IV. Pipeline Research Council International, Inc. (PRCI), 2021. http://dx.doi.org/10.55274/r0012176.

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Based on experimental characterization of the scavenging behavior of a cross-scavenged, piston-aspirated, two-stroke, natural gas engine in phase III of the current project, a computationally inexpensive simple scavenging model was improved in this phase. Experimental results using fast nondispersive infrared (NDIR) CO2 measurements from the cylinder and the exhaust, as well as experiments using unburned fuel pre-mixed in the scavenging chamber as a tracer for short-circuiting during scavenging, were used in this phase to validate the improved model. The model represents the fundamental phenom
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Financial Infrastructure Report 2022. Banco de la República, 2023. http://dx.doi.org/10.32468/rept-sist-pag.eng.2022.

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Banco de la República's monitoring of the local financial market infrastructure is an additional contribution to the country's financial stability. One of the products of that monitoring has been the Payment Systems Report, which is now known as the Financial Infrastructure Report. The change in name, as of this edition, is intended to reflect in a broader way the issues that are addressed in the report. The 2022 edition includes several changes that are the result of a comparative study of financial infrastructure reports prepared by other central banks. These changes seek to make the report
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