The Special Features of Heat Transfer in a Supercritical Fluid: Mathematical and Physical Modeling Results

被引：2

作者：

Emel'yanov, V. M. ^{[1
]}

Gorbunov, A. A. ^{[1
]}

Lednev, A. K. ^{[1
]}

Nikitin, S. A. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Problems Mech, Moscow 117526, Russia

来源：

RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B | 2009年 / 3卷 / 07期

基金：

俄罗斯基础研究基金会;

关键词：

Rayleigh-Benard convection; critical thermodynamic point; Navier-Stokes equations; numerical and physical experiments; PURE FLUID; MICROGRAVITY; DENSITY; ABSENCE;

D O I：

10.1134/S1990793109070124

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The special features of heat transfer in a supercritical fluid were considered for the example of two problems, those of Rayleigh-Benard convection in a horizontal layer heated from below and nonstationary heat transfer in a closed volume with heated boundaries. Isentropic equilibrium of a compressible medium that obeyed the van der Waals equation of state was studied. The calculation results were generalized, and the special features of convective heat transfer in a supercritical fluid beyond the stability threshold of hydrostatic equilibrium were discussed. The results of numerical and experimental studies of the relaxation of density and temperature nonuniformities as the temperature of volume walls changed were presented. The calculations were performed using the complete system of Navier-Stokes equations and the equation of state of an ideal or van der Waals gas.

引用

页码：1117 / 1124

页数：8

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