Results 21 to 30 of about 7,025,656 (234)

Prandtl number effect on near wall temperature profile in high-Reynolds number channel flows

open access: yesNihon Kikai Gakkai ronbunshu, 2014
Prandtl number (Pr) effects on characteristics of the thermal boundary layer were investigated by means of Direct Numerical Simulations (DNS) in high-Reynolds number turbulent channel flows. The molecular Pr conditions were changed from 0.71 to 25.0, and
Shogo SARUWATARI, Yoshinobu YAMAMOTO
doaj   +1 more source

Numerical investigation of steady state, laminar, natural convection of Bingham fluids in a trapezoidal enclosure heated from the bottom and cooled from the sides

open access: yesInternational Journal of Thermofluids, 2023
Laminar, steady-state, natural convection of Bingham fluids in trapezoidal enclosures with a heated bottom wall, cooled inclined sidewalls and an adiabatic top wall has been studied based on numerical simulations for a range of values of nominal Bingham ...
S. Malkeson   +2 more
doaj   +1 more source

Examination of warm transfer on extending sheet by variation iteration method strategy and investigation of arrangements for optimizing liquid properties

open access: yesEngineering Reports, 2022
This study aimed at investigating the variation of heat transfer and velocity changes of the fluid flow along the vertical line on a surface drawn from both sides.
Pooya Pasha   +3 more
doaj   +1 more source

A numerical simulation on high prandtl number liquid bridge

open access: yesMATEC Web of Conferences, 2015
The free surface characteristics of high prandtl number liquid bridge with dynamic deformation have been investigated under microgravity based on the Navier-Stokes equations coupled with the energy conservation equation on a staggered grid.
Yang Shuo, Liang Ruquan, He Jicheng
doaj   +1 more source

Hydrothermal Instability Of Thermocapillary Convection In Large-Prandtl-Number Liquid Bridges Under Microgravity [PDF]

open access: yes, 2008
Linear stability analysis was performed to study the mechanism of transition of thermocapillary convection in liquid bridges with liquid volume ratios ranging from 0.4 to 1.2, aspect ratio of 0.75 and Prandtl number of 100.
Chen, QS (reprint author), Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, 15 Bei Si Huan Xi Rd, Beijing 100080, Peoples R China.   +2 more
core   +1 more source

Vertical heat transport at infinite Prandtl number for micropolar fluid

open access: yesArchives of Mechanics, 2020
We investigate the upper bound on the vertical heat transport in the fully 3D Rayleigh–Bénard convection problem at the infinite Prandtl number for a micropolar fluid.
M. Caggio   +3 more
doaj   +1 more source

Turbulent Transport in a Stratified Shear Flow

open access: yesJournal of Marine Science and Engineering, 2023
Within the framework of the theory of unsteady turbulent flows in a stratified fluid, a new parameterization of the turbulent Prandtl number is proposed.
Daria Gladskikh   +4 more
doaj   +1 more source

Two-dimensional magnetohydrodynamic turbulence in the small magnetic Prandtl number limit [PDF]

open access: yes, 2012
In this paper we introduce a new method for computations of two-dimensional magnetohydrodynamic (MHD) turbulence at low magnetic Prandtl number $\Pra=\nu/\eta$.
Tobias, Steve, Dritschel, David Gerard
core   +1 more source

Bifurcation and chaos in zero-Prandtl-number convection [PDF]

open access: yesEPL (Europhysics Letters), 2009
We present the detailed bifurcation structure and associated flow patterns near the onset of zero Prandtl number Rayleigh Bénard convection. We employ both direct numerical simulation and a low-dimensional model ensuring qualitative agreement between the two.
P. Pal   +5 more
openaire   +2 more sources

Velocity field in a high prandtl number liquid bridge

open access: yesMATEC Web of Conferences, 2015
A numerical model is developed to investigate the velocity fields of high prandtl number liquid bridge with surface deformation under microgravity. The Navier-Stokes equations coupled with the energy conservation equation are solved on a staggered grid ...
Yang Shuo, Liang Ruquan, He Jicheng
doaj   +1 more source

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