DNS and k-ε model simulation of MHD turbulent channel flows with heat transfer

被引：16

作者：

Yamamoto, Y. ^{[1
]}

Kunugi, T. ^{[2
]}

Satake, S. ^{[3
]}

Smolentsev, S. ^{[4
]}

机构：

[1] Nagoya Univ, Dept Energy Engn & Sci, Chikusa Ku, Nagoya, Aichi 4648603, Japan

[2] Kyoto Univ, Dept Nucl Engn, Sakyo Ku, Kyoto 6068501, Japan

[3] Tokyo Univ Sci, Dept Appl Elect, Chiba 2788510, Japan

[4] Univ Calif Los Angeles, Dept Mech & Aerosp Engn, Los Angeles, CA 90095 USA

来源：

FUSION ENGINEERING AND DESIGN | 2008年 / 83卷 / 7-9期

关键词：

MHD pressure loss; Turbulent heat transfer; Higher Prandtl number; DNS; RANS;

D O I：

10.1016/j.fusengdes.2008.10.001

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

In this study, the magneto-hydro-dynamic (MHD) pressure loss and heat-transfer characteristics of the low-magnetic Reynolds number and higher Prandtl number(Pr) fluid such as the FLiBe,were investigated by means of direct numerical simulation (DNS) and the evaluation of MHD turbulence models was also carried out in higher Reynolds number (Re) condition. As the results. the similarity-law between the velocity and the temperature profiles was not satisfied with increase of Hartman number (Ha) and was noticeable at the near critical Ha condition to maintain turbulent flow. In higher Re condition, MHD turbulence models Coupled with kappa-epsilon model Of turbulence can reproduce the MHD pressure loss trend with increase of Ha. However. the turbulent model which can consider the anisotropy of the Reynolds stresses and the local change of the turbulent Prandtl number might be required in the view point of quantitative prediction. (C) 2008 Published by Elsevier B.V.

引用

页码：1309 / 1312

页数：4

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