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Viscous fingering of a miscible high viscosity slice of fluid displaced by a lower viscosity fluid is studied in porous media by direct numerical simulations of Darcy's law coupled to the evolution equation for the concentration of a solute…

流体动力学 · 物理学 2023-04-12 Anne De Wit , Yann Bertho , Michel Martin

Transport properties in gases are significantly affected by temperature. In previous works it has been shown that when the thermal agitation in a gas is high enough, such that relativistic effects become relevant, heat dissipation is driven…

广义相对论与量子宇宙学 · 物理学 2015-04-13 A. L. Garcia-Perciante , A. Sandoval-Villalbazo , D. Brun-Battistini

We investigate the two-dimensional transport of heat through viscous flow between two parallel rough interfaces with a given fractal geometry. The flow and heat transport equations are solved through direct numerical simulations, and for…

统计力学 · 物理学 2009-11-10 J. S. Andrade , E. A. Henrique , M. P. Almeida , M. H. A. S. Costa

The viscous and thermal relaxation rates of an interacting fermion gas are calculated as functions of temperature and scattering length, using a many-body scattering matrix which incorporates medium effects due to Fermi blocking of…

统计力学 · 物理学 2009-11-11 G. M. Bruun , H. Smith

We investigate the effect of flow kinematics on the extensional viscosity of dilute polymer solutions by conducting dissipative particle dynamics simulations under uniaxial, planar, and biaxial extensional flows. At high extension rates,…

软凝聚态物质 · 物理学 2026-03-13 Yusuke Koide , Takato Ishida , Takashi Uneyama , Yuichi Masubuchi

The Synchronized Molecular-Dynamics simulation which was recently proposed by authors [Phys. Rev. X {\bf 4}, 041011 (2014)] is applied to the analysis of polymer lubrication between parallel plates. The rheological properties,…

流体动力学 · 物理学 2016-12-23 Shugo Yasuda , Ryoichi Yamamoto

Condensation is an important aspect of many flow applications due to the universal presence of humidity in the air at ambient conditions. For direct numerical simulations of such flows, simulating the gas phase as a mixture characterized by…

流体动力学 · 物理学 2022-06-29 Philipp Bahavar , Claus Wagner

The hydrodynamic behavior of electron fluids in a certain range of temperatures and densities is well established in graphene and in 2D semiconductor heterostructures. The hydrodynamic regime is intrinsically based on electron-electron…

介观与纳米尺度物理 · 物理学 2023-12-12 Jack N. Engdahl , Aydin Cem Keser , Oleg P. Sushkov

The viscosity of supercooled liquids notably increases with decreasing temperature, leading to solidification through a glass transition. This process is accompanied by dynamic heterogeneity, characterized by persistent dynamic spatial…

软凝聚态物质 · 物理学 2024-09-30 Kento Maeda , Atsushi Ikeda

Hydrodynamical models of colliding hypersonic flows are presented which explore the dependence of the resulting dynamics and the characteristics of the derived X-ray emission on numerical conduction and viscosity. For the purpose of our…

天体物理仪器与方法 · 物理学 2015-05-18 E. R. Parkin , J. M. Pittard

The present paper studies the effects of thermal radiation and mass diffusion on MHD flow over a vertical plate that applies time dependent shear to the fluid. This study is meant to provide framework for improved thermal system where…

流体动力学 · 物理学 2017-10-20 N. Shahid

We present an experimental study on steady gravity currents advancing along a heated wall. The current is generated by a mixture of air and carbon dioxide continuously supplied at the channel inlet. To have a complete point-wise…

流体动力学 · 物理学 2026-01-21 Stefano Lanzini , Massimo Marro , Mathieu Creyssels , Alexandre Azouzi , Pietro Salizzoni

The thermo-mechanical effect in superfluid helium is used to create an initial chemical potential difference, $\Delta \mu_0$, across a solid $^4$He sample. This $\Delta \mu_0$ causes a flow of helium atoms from one reservoir filled with…

其他凝聚态物理 · 物理学 2015-06-22 Ye. Vekhov , R. B. Hallock

We investigate the Navier-Stokes-Fourier system for incompressible heat conducting inhomogeneous fluid. The main result concerns existence of global in time regular large solutions, provided the initial temperature is sufficiently large.…

偏微分方程分析 · 数学 2016-02-01 Piotr B. Mucha , Agnieszka Świerczewska-Gwiazda

In stars and planets natural processes heat convective flows in the bulk of a convective region rather than at hard boundaries. By characterizing how convective dynamics are determined by the strength of an internal heating source we can…

流体动力学 · 物理学 2024-04-16 Whitney T. Powers , Evan H. Anders , Benjamin P. Brown

Viscous fingering (VF) is an interfacial instability that occurs in a narrow confinement or porous medium when a less-viscous fluid pushes a more viscous one, producing finger-like patterns. Controlling the VF instability is essential to…

流体动力学 · 物理学 2022-05-18 Alban Pouplard , Peichun Amy Tsai

This extensive investigation explores the influence of inclined magnetic fields and radiative non-linear heat flux on the behavior of dusty hybrid nanofluids over stretching/shrinking wedges. Employing $Cu$-$SiO_2$ as a hybrid nanoparticle…

流体动力学 · 物理学 2025-04-17 Nimra Muqaddass , Waqar Ahmed Khanb , Fazle Mabood

Laboratory experiments were conducted to study heat transport characteristics in a nonhomogeneously heated fluid annulus subjected to rotation along the vertical axis (z). The nonhomogeneous heating was obtained by imposing radial and…

The evolution of the interface separating a conduit of light, viscous fluid rising buoyantly through a heavy, more viscous, exterior fluid at small Reynolds numbers is governed by the interplay between nonlinearity and dispersion. Previous…

流体动力学 · 物理学 2015-06-16 Nicholas K. Lowman , Mark A. Hoefer

The viscoelastic effect on the hydrodynamic relaxation in semidilute polymer solutions is investigated. From the linearized two-fluid model equations, we predict that the dynamical asymmetry coupling between the velocity fluctuations and…

软凝聚态物质 · 物理学 2009-11-07 Akira Furukawa