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Journal articles on the topic 'Ideal fluids'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 July 2025

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1

Pagonabarraga, I., and D. Frenkel. "Non-Ideal DPD Fluids." Molecular Simulation 25, no. 3-4 (2000): 167–75. http://dx.doi.org/10.1080/08927020008044122.

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2

Robinet, J. C., and X. Gloerfelt. "Instabilities in non-ideal fluids." Journal of Fluid Mechanics 880 (October 4, 2019): 1–4. http://dx.doi.org/10.1017/jfm.2019.719.

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The recent study of Ren et al. (J. Fluid Mech., vol. 871, 2019, pp. 831–864) investigated the hydrodynamic linear stability of a compressible boundary layer over an insulated flat plate for a non-ideal gas (supercritical $\text{CO}_{2}$). In particular, the authors showed that in the transcritical regime (across the pseudo-critical line) the flow is strongly convectively unstable due to the co-existence of two unstable modes: Mode I, related to Tollmien–Schlichting instabilities and a new inviscid two-dimensional mode (Mode II) with a spatial growth rate one order of magnitude larger than Mode

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3

ALHUSSAN, KHALED. "METHOD OF ENERGY TRANSFER." Modern Physics Letters B 19, no. 28n29 (2005): 1663–66. http://dx.doi.org/10.1142/s0217984905010165.

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The aim of this paper is to show numerically the semi-ideal way of transferring energy in the non-steady supersonic mechanism. Energy can be transferred between two fluids in semi-ideal process if the two fluids are brought together for a direct contact. This paper shows the energy transfer between two fluids via the direct fluid-fluid interaction in a non-steady supersonic flow. This was shown by using two fluids one with higher energy than the other. Results including contour plots of static pressure, static temperature, and total pressure and velocity vectors show the structure of flow of t

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4

Wang, Yi, Jiawen Yang, Li Xia, Xiaoyan Sun, Shuguang Xiang, and Lili Wang. "Research on screening strategy of Organic Rankine Cycle working fluids based on quantum chemistry." Clean Energy Science and Technology 2, no. 2 (2024): 169. http://dx.doi.org/10.18686/cest.v2i2.169.

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The screening of working fluids is one of the key components in the study of power generation systems utilizing low-temperature waste heat. However, the variety of working fluids and their complex composition increase the difficulty of screening working fluids. In this study, a screening strategy for working fluids was developed from the perspective of the thermodynamic physical properties of working fluids. A comparative ideal gas heat capacity via the reduced ideal gas heat capacity factor (RCF) was proposed to characterize the dry and wet properties of working fluids, where RCF > 1 indic

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5

Hochgerner, Simon. "Feedback control of charged ideal fluids." Nonlinearity 34, no. 3 (2021): 1316–51. http://dx.doi.org/10.1088/1361-6544/abbd83.

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6

Rajeev, S. G. "The Geometry of Non-Ideal Fluids." Journal of Physics: Conference Series 462 (December 31, 2013): 012043. http://dx.doi.org/10.1088/1742-6596/462/1/012043.

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7

Bardos, Claude, and Edriss Titi. "Euler equations for incompressible ideal fluids." Russian Mathematical Surveys 62, no. 3 (2007): 409–51. http://dx.doi.org/10.1070/rm2007v062n03abeh004410.

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8

Vitale, Salvatore, Tim A. Albring, Matteo Pini, Nicolas R. Gauger, and Piero Colonna. "Fully turbulent discrete adjoint solver for non-ideal compressible flow applications." Journal of the Global Power and Propulsion Society 1 (November 22, 2017): Z1FVOI. http://dx.doi.org/10.22261/jgpps.z1fvoi.

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Abstract Non-Ideal Compressible Fluid-Dynamics (NICFD) has recently been established as a sector of fluid mechanics dealing with the flows of dense vapors, supercritical fluids, and two-phase fluids, whose properties significantly depart from those of the ideal gas. The flow through an Organic Rankine Cycle (ORC) turbine is an exemplary application, as stators often operate in the supersonic and transonic regime, and are affected by NICFD effects. Other applications are turbomachinery using supercritical CO2 as working fluid or other fluids typical of the oil and gas industry, and components o

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9

SPENCER, A. J. M. "Fibre-streamline flows of fibre-reinforced viscous fluids." European Journal of Applied Mathematics 8, no. 2 (1997): 209–15. http://dx.doi.org/10.1017/s0956792597003045.

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An ideal fibre-reinforced fluid is incompressible and inextensible along a family of material curves that are convected with the fluid. It is a model for continuous fibre-resin systems in the fluid state in which forming processes take place. Like liquid crystals, these fluids have strong directional properties. The kinematic and constitutive theory of ideal fibre-reinforced fluids is described, with particular reference to plane flows. The class of flows in which the fibres are aligned along the streamlines is considered, and an explanation is given for the observed prevalence of this class o

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10

Fedosov, Dmitry A., Ankush Sengupta, and Gerhard Gompper. "Effect of fluid–colloid interactions on the mobility of a thermophoretic microswimmer in non-ideal fluids." Soft Matter 11, no. 33 (2015): 6703–15. http://dx.doi.org/10.1039/c5sm01364j.

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Thermophoretic Janus colloids offer promising prospects as artificial microswimmers. Their swimming behavior is investigated numerically for different fluid–colloid interactions, boundary conditions, and temperature-controlling strategies in non-ideal and ideal-gas-like fluids.

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11

Wu, Huawei, Peyman Torkian, Amir Zarei, Iman Moradi, Arash Karimipour, and Masoud Afrand. "Hydrodynamic and thermal flow in nanochannel to study effects of roughness by estimation the atoms positions via MD method." International Journal of Numerical Methods for Heat & Fluid Flow 30, no. 1 (2019): 452–67. http://dx.doi.org/10.1108/hff-09-2019-0711.

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Purpose This paper aims to investigate atoms type and channel roughness effects on fluid behavior in nanochannel. Design/methodology/approach The results of mechanical properties of these structures are reported in this work by using molecular dynamics method. Findings The results show that nanochannel roughness is a limiting factor in flowing fluid in nanochannel. Moreover, fluids with less atomic weight have more free movement in ideal and non-ideal nanochannels. Originality/value For the study of mechanical properties of fluid/nanochannel system, the authors calculated parameters such as po

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12

Liberal, Iñigo, Michaël Lobet, Yue Li, and Nader Engheta. "Near-zero-index media as electromagnetic ideal fluids." Proceedings of the National Academy of Sciences 117, no. 39 (2020): 24050–54. http://dx.doi.org/10.1073/pnas.2008143117.

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Near-zero-index (NZI) supercoupling, the transmission of electromagnetic waves inside a waveguide irrespective of its shape, is a counterintuitive wave effect that finds applications in optical interconnects and engineering light–matter interactions. However, there is a limited knowledge on the local properties of the electromagnetic power flow associated with supercoupling phenomena. Here, we theoretically demonstrate that the power flow in two-dimensional (2D) NZI media is fully analogous to that of an ideal fluid. This result opens an interesting connection between NZI electrodynamics and f

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13

Gross, M., R. Adhikari, M. E. Cates, and F. Varnik. "Modelling thermal fluctuations in non-ideal fluids with the lattice Boltzmann method." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 369, no. 1944 (2011): 2274–82. http://dx.doi.org/10.1098/rsta.2011.0091.

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Recently, we proposed a theoretical framework to include thermal fluctuations into the Lattice Boltzmann (LB) method for non-ideal fluids. Here, we apply a variant thereof to a certain class of force-based non-ideal fluid LB models. We find that ideal-gas-like noise is an exact result of the fluctuation–dissipation theorem in the hydrodynamic regime. It is shown that satisfactory equilibration of the density and fluid momentum can be obtained in a simulation over a wide range of length scales.

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14

Ziegler, H. J., and H. Wiechen. "Mixing and relaxation in ideal incompressible fluids." Physica Scripta T74 (January 1, 1998): 50–53. http://dx.doi.org/10.1088/0031-8949/1998/t74/009.

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15

Ojha, S. N., and M. S. Tiwari. "Shock wave propagation in non-ideal fluids." Earth, Moon, and Planets 62, no. 3 (1993): 273–87. http://dx.doi.org/10.1007/bf00572304.

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16

Borghini, Nicolas, and Jean-Yves Ollitrault. "Momentum spectra, anisotropic flow, and ideal fluids." Physics Letters B 642, no. 3 (2006): 227–31. http://dx.doi.org/10.1016/j.physletb.2006.09.062.

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17

Hull, B. D., T. G. Rogers, and A. J. M. Spencer. "Controllable flows of ideal fibre-reinforced fluids." Mechanics Research Communications 19, no. 6 (1992): 527–34. http://dx.doi.org/10.1016/0093-6413(92)90079-p.

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18

Touber, Emile, and Nicolas Alferez. "Shock-induced energy conversion of entropy in non-ideal fluids." Journal of Fluid Mechanics 864 (February 11, 2019): 807–47. http://dx.doi.org/10.1017/jfm.2019.25.

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From shaping cosmic structures in space to producing intense sounds in aircraft engines, shock waves in fluids ineluctably convert entropy fluctuations into swirling motions and sound waves. Studies of the corresponding conversion from internal energy to kinetic energy have so far been restricted to ideal (or idealised) fluids. Yet, many substances do not obey the ideal-gas law (including those in the above two examples). The present work demonstrates that non-ideal thermodynamic properties provide a remarkable degree of control over the conversion to solenoidal and dilatational kinetic energi

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19

Ren, Jie, Song Fu, and Rene Pecnik. "Linear instability of Poiseuille flows with highly non-ideal fluids." Journal of Fluid Mechanics 859 (November 16, 2018): 89–125. http://dx.doi.org/10.1017/jfm.2018.815.

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The objective of this work is to investigate linear modal and algebraic instability in Poiseuille flows with fluids close to their vapour–liquid critical point. Close to this critical point, the ideal gas assumption does not hold and large non-ideal fluid behaviours occur. As a representative non-ideal fluid, we consider supercritical carbon dioxide ($\text{CO}_{2}$) at a pressure of 80 bar, which is above its critical pressure of 73.9 bar. The Poiseuille flow is characterized by the Reynolds number ($Re=\unicode[STIX]{x1D70C}_{w}^{\ast }u_{r}^{\ast }h^{\ast }/\unicode[STIX]{x1D707}_{w}^{\ast

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20

Rogovyi, Andrii, and Artem Neskorozhenyi. "Flow fields of a non-Newtonian fluid in vortex chamber pumps." Bulletin of Kharkov National Automobile and Highway University 1, no. 92 (2021): 125. http://dx.doi.org/10.30977/bul.2219-5548.2021.92.1.125.

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Problem. Pumping different fluids by hydraulic transport is associated with fast wear of the pump contact surfaces. The fluids being pumped are often non-Newtonian. The use of jet pumps for pumping is impractical due to low efficiency. Vortex chamber pumps may have higher efficiency when pumping non-Newtonian fluids, however, their operation on such fluids has not yet been studied. The aim of this work is to study the characteristics of the flow fields of a non-Newtonian fluid using the example of a Bingham fluid in the vortex chamber pump. Methodology. Predicting pump energy performance and d

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21

Vimercati, Davide, Giulio Gori, and Alberto Guardone. "Non-ideal oblique shock waves." Journal of Fluid Mechanics 847 (May 21, 2018): 266–85. http://dx.doi.org/10.1017/jfm.2018.328.

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From the analysis of the isentropic limit of weak compression shock waves, oblique shock waves in which the post-shock Mach number is larger than the pre-shock Mach number, named non-ideal oblique shocks, are admissible in substances characterized by moderate molecular complexity and in the close proximity to the liquid–vapour saturation curve. Non-ideal oblique shocks of finite amplitude are systematically analysed, clarifying the roles of the pre-shock thermodynamic state and Mach number. The necessary conditions for the occurrence of non-ideal oblique shocks of finite amplitude are singled

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22

Meyer, R. W., and S. Erland. "Induced drag in two dimensions in ideal fluids." Journal of Physics Communications 3, no. 11 (2019): 115005. http://dx.doi.org/10.1088/2399-6528/ab5022.

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23

Boger, David V., and Michael E. Mackay. "Continuum and molecular interpretation of ideal elastic fluids." Journal of Non-Newtonian Fluid Mechanics 41, no. 1-2 (1991): 133–50. http://dx.doi.org/10.1016/0377-0257(91)87039-z.

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24

Grauer, Rainer, and Thomas C. Sideris. "Finite time singularities in ideal fluids with swirl." Physica D: Nonlinear Phenomena 88, no. 2 (1995): 116–32. http://dx.doi.org/10.1016/0167-2789(95)00197-c.

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25

Cheskidov, A., M. C. Lopes Filho, H. J. Nussenzveig Lopes, and R. Shvydkoy. "Energy Conservation in Two-dimensional Incompressible Ideal Fluids." Communications in Mathematical Physics 348, no. 1 (2016): 129–43. http://dx.doi.org/10.1007/s00220-016-2730-8.

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26

Valli, Alberto, and Wojciech M. Zajaczkowski. "About the motion of nonhomogeneous ideal incompressible fluids." Nonlinear Analysis: Theory, Methods & Applications 12, no. 1 (1988): 43–50. http://dx.doi.org/10.1016/0362-546x(88)90011-9.

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27

Meng, Xiangning, Baiyi Lu, Miaoyong Zhu, and Ryosuke O. Suzuki. "Thermoelectric Generation Using Counter-Flows of Ideal Fluids." Journal of Electronic Materials 46, no. 8 (2017): 5136–44. http://dx.doi.org/10.1007/s11664-017-5518-5.

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28

Fu, Jiawei, Zhenhua Liu, Xingyang Yang, Sumin Jin, and Jilei Ye. "Limiting Performance of the Ejector Refrigeration Cycle with Pure Working Fluids." Entropy 25, no. 2 (2023): 223. http://dx.doi.org/10.3390/e25020223.

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An ejector refrigeration system is a promising heat-driven refrigeration technology for energy consumption. The ideal cycle of an ejector refrigeration cycle (ERC) is a compound cycle with an inverse Carnot cycle driven by a Carnot cycle. The coefficient of performance (COP) of this ideal cycle represents the theoretical upper bound of ERC, and it does not contain any information about the properties of working fluids, which is a key cause of the large energy efficiency gap between the actual cycle and the ideal cycle. In this paper, the limiting COP and thermodynamics perfection of subcritica

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29

Zhu, Jian-Zhou. "Local invariants in non-ideal flows of neutral fluids and two-fluid plasmas." Physics of Fluids 30, no. 3 (2018): 037104. http://dx.doi.org/10.1063/1.5020863.

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30

Imre, Attila R., Réka Kustán, and Axel Groniewsky. "Thermodynamic Selection of the Optimal Working Fluid for Organic Rankine Cycles." Energies 12, no. 10 (2019): 2028. http://dx.doi.org/10.3390/en12102028.

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A novel method proposed to choose the optimal working fluid—solely from the point of view of expansion route—for a given heat source and heat sink (characterized by a maximum and minimum temperature). The basis of this method is the novel classification of working fluids using the sequences of their characteristic points on temperature-entropy space. The most suitable existing working fluid can be selected, where an ideal adiabatic (isentropic) expansion step between a given upper and lower temperature is possible in a way, that the initial and final states are both saturated vapour states and

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31

Rumpf, Benno, and Yuri V. Lvov. "Generalized Clebsch Variables for Compressible Ideal Fluids: Initial Conditions and Approximations of the Hamiltonian." Fluids 7, no. 4 (2022): 122. http://dx.doi.org/10.3390/fluids7040122.

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Clebsch variables provide a canonical representation of ideal flows that is, in practice, difficult to handle: while the velocity field is a function of the Clebsch variables and their gradients, constructing the Clebsch variables from the velocity field is not trivial. We introduce an extended set of Clebsch variables that circumvents this problem. We apply this method to a compressible, chemically inhomogeneous, and rotating ideal fluid in a gravity field. A second difficulty, the secular growth of canonical variables even for stationary states of stratified fluids, makes expansions of the H

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32

Peralta-Salas, Daniel. "Selected topics on the topology of ideal fluid flows." International Journal of Geometric Methods in Modern Physics 13, Supp. 1 (2016): 1630012. http://dx.doi.org/10.1142/s0219887816300129.

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This is a survey of certain geometric aspects of inviscid and incompressible fluid flows, which are described by the solutions to the Euler equations. We will review Arnold’s theorem on the topological structure of stationary fluids in compact manifolds, and Moffatt’s theorem on the topological interpretation of helicity in terms of knot invariants. The recent realization theorem by Enciso and Peralta-Salas of vortex lines of arbitrarily complicated topology for stationary solutions to the Euler equations will also be introduced. The aim of this paper is not to provide detailed proofs of all t

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33

Colonna, Piero, and Paolo Silva. "Dense Gas Thermodynamic Properties of Single and Multicomponent Fluids for Fluid Dynamics Simulations." Journal of Fluids Engineering 125, no. 3 (2003): 414–27. http://dx.doi.org/10.1115/1.1567306.

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The use of dense gases in many technological fields requires modern fluid dynamic solvers capable of treating the thermodynamic regions where the ideal gas approximation does not apply. Moreover, in some high molecular fluids, nonclassical fluid dynamic effects appearing in those regions could be exploited to obtain more efficient processes. This work presents the procedures for obtaining nonconventional thermodynamic properties needed by up to date computer flow solvers. Complex equations of state for pure fluids and mixtures are treated. Validation of sound speed estimates and calculations o

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34

&NA;. "Fluids with > 0.05% protein ideal for epoetin-?? infusion." Inpharma Weekly &NA;, no. 1037 (1996): 20. http://dx.doi.org/10.2165/00128413-199610370-00050.

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35

Grauer, Rainer, and Thomas C. Sideris. "Numerical computation of 3D incompressible ideal fluids with swirl." Physical Review Letters 67, no. 25 (1991): 3511–14. http://dx.doi.org/10.1103/physrevlett.67.3511.

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36

Montfrooij, Wouter, Peter Verkerk, and Ignatz de Schepper. "Approach to ideal-gas behavior in dense classical fluids." Physical Review A 33, no. 1 (1986): 540–46. http://dx.doi.org/10.1103/physreva.33.540.

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37

Khalzov, I. V., A. I. Smolyakov, and V. I. Ilgisonis. "Energy of eigenmodes in magnetohydrodynamic flows of ideal fluids." Physics of Plasmas 15, no. 5 (2008): 054501. http://dx.doi.org/10.1063/1.2907164.

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38

Demir, Nasser. "Ideal Fluids, the Quark Gluon Plasma, and Hadronic Gases." Journal of Physics: Conference Series 574 (January 21, 2015): 012155. http://dx.doi.org/10.1088/1742-6596/574/1/012155.

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39

Wenqiang, Feng, and Yan Jienian. "Designing drill-in fluids by using ideal packing technique." Petroleum Science 4, no. 2 (2007): 44–51. http://dx.doi.org/10.1007/bf03187441.

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40

Preston, S. C. "For Ideal Fluids, Eulerian and Lagrangian Instabilities are Equivalent." Geometric And Functional Analysis 14, no. 5 (2004): 1044–62. http://dx.doi.org/10.1007/s00039-004-0482-7.

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41

Holm, Darryl D., Jerrold E. Marsden, and Tudor S. Ratiu. "Euler-Poincaré Models of Ideal Fluids with Nonlinear Dispersion." Physical Review Letters 80, no. 19 (1998): 4173–76. http://dx.doi.org/10.1103/physrevlett.80.4173.

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42

Hosseini, S. A., and I. V. Karlin. "Lattice Boltzmann for non-ideal fluids: Fundamentals and Practice." Physics Reports 1030 (August 2023): 1–137. http://dx.doi.org/10.1016/j.physrep.2023.07.003.

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43

Gallenmüller, Dennis. "Measure-Valued Low Mach Number Limits of Ideal Fluids." SIAM Journal on Mathematical Analysis 55, no. 2 (2023): 1145–69. http://dx.doi.org/10.1137/21m1467596.

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44

Tam, K. C., T. Moussa, and C. Tiu. "Ideal elastic fluids of different viscosity and elasticity levels." Rheologica Acta 28, no. 2 (1989): 112–20. http://dx.doi.org/10.1007/bf01356972.

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45

Apparao, Siddangouda, Trimbak Vaijanath Biradar, and Neminath Bhujappa Naduvinamani. "Non-Newtonian Effects of Second-Order Fluids on the Hydrodynamic Lubrication of Inclined Slider Bearings." International Scholarly Research Notices 2014 (October 23, 2014): 1–7. http://dx.doi.org/10.1155/2014/787304.

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Theoretical study of non-Newtonian effects of second-order fluids on the performance characteristics of inclined slider bearings is presented. An approximate method is used for the solution of the highly nonlinear momentum equations for the second-order fluids. The closed form expressions for the fluid film pressure, load carrying capacity, frictional force, coefficient of friction, and centre of pressure are obtained. The non-Newtonian second order fluid model increases the film pressure, load carrying capacity, and frictional force whereas the center of pressure slightly shifts towards exit

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46

Camassa, R., S. Chen, G. Falqui, G. Ortenzi, and M. Pedroni. "Topological selection in stratified fluids: an example from air–water systems." Journal of Fluid Mechanics 743 (March 6, 2014): 534–53. http://dx.doi.org/10.1017/jfm.2013.644.

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AbstractTopologically non-trivial configurations of stratified fluid domains are shown to generate selection mechanisms for conserved quantities. This is illustrated within the special case of a two-fluid system when the density of one of the fluids limits to zero, such as in the case of air and water. An explicit example is provided, demonstrating how the connection properties of the air domain affect total horizontal momentum conservation, despite the apparent translational invariance of the system. The correspondence between this symmetry and the selection process is also studied within the

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47

LARSSON, JONAS. "A practical form of Lagrange–Hamilton theory for ideal fluids and plasmas." Journal of Plasma Physics 69, no. 3 (2003): 211–52. http://dx.doi.org/10.1017/s0022377803002290.

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Lagrangian and Hamiltonian formalisms for ideal fluids and plasmas have, during the last few decades, developed much in theory and applications. The recent formulation of ideal fluid/plasma dynamics in terms of the Euler–Poincaré equations makes a self-contained, but mathematically elementary, form of Lagrange–Hamilton theory possible. The starting point is Hamilton's principle. The main goal is to present Lagrange–Hamilton theory in a way that simplifies its applications within usual fluid and plasma theory so that we can use standard vector analysis and standard Eulerian fluid variables. The

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48

Shebalin, John V. "Absolute equilibrium entropy." Journal of Plasma Physics 56, no. 3 (1996): 419–26. http://dx.doi.org/10.1017/s0022377800019383.

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The entropy associated with absolute equilibrium ensemble theories of ideal, homogeneous, fluid and magnetofluid turbulence is discussed, and the three-dimensional fluid case is examined in detail. A σ function is defined, whose minimum value with respect to global parameters is the entropy. A comparison is made between the use of global functions σ and phase functions H (associated with the development of various H theorems of ideal turbulence). It is shown that the two approaches are complementary, though conceptually different: H theorems show that an isolated system tends to equilibrium, w

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49

Cremaschini, Claudio, Jiří Kovář, Zdeněk Stuchlík, and Massimo Tessarotto. "Polytropic representation of the kinetic pressure tensor of non-ideal magnetized fluids in equilibrium toroidal structures." Physics of Fluids 35, no. 1 (2023): 017123. http://dx.doi.org/10.1063/5.0134320.

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Non-ideal fluids are generally subject to the occurrence of non-isotropic pressure tensors, whose determination is fundamental in order to characterize their dynamical and thermodynamical properties. This requires the implementation of theoretical frameworks provided by appropriate microscopic and statistical kinetic approaches in terms of which continuum fluid fields are obtained. In this paper, the case of non-relativistic magnetized fluids forming equilibrium toroidal structures in external gravitational fields is considered. Analytical solutions for the kinetic distribution function are ex

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50

Palmer, S. C., and S. V. Shelton. "Sensitivity Analysis of Absorption Cycle Fluid Thermodynamic Properties." Journal of Energy Resources Technology 121, no. 2 (1999): 137–41. http://dx.doi.org/10.1115/1.2795069.

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Absorption heat pump technology may be improved by new cycle configurations by new working fluids. In this study, the effect of hypothetical working fluids on performance improvement is explored. The performance of two cycles is studied using three fluid property sources for ammonia/water, i.e., curve-fit experimental data, an ideal solution model, and the Peng-Robinson equation of state model. The models require only minimal fundamental thermodynamic property data for the two pure components. This allows investigation into the influence of each fundamental property on cycle performance, provi

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