208 二方程式乱流モデルを適用した共存対流乱流輸送機構の考察

概要

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Turbulent combined convection between vertical parallel platesis simulated numerically using two-equation turbulence models for both the velocity and temperature fields. The purpose of the present paper is to analyze the transport phenomena affected by buoyancy because they have not been discussed empirically owing to the difficulty of the measurement. In particular, the behavior of turbulent Prandtl number has not been investigated numerically and empirically. Therefore, in this paper, the turbulent transport mechanism is analyzed by adding a buoyant effect to the transport equations and by modifying the damping functions. It is revealed that the modified model can simulate the heat transfer and fluid flow of turbulent combined convection. The effectiveness of the present model is confirmed by comparing the numerical result of DNS.
一般社団法人日本機械学会の論文
2003-09-19