平行平板流路の壁面に置かれたモジュールから強制対流空気への複合熱伝達 : モジュール周辺の断熱壁温と熱伝達率の分布

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This paper is one of the serial reports on an experimental study of heat transfer from a simulated module (31×31×7 mm^3) mounted on the floor of a parallel-plate channel (20 mm high, 320 mm wide, and 650 mm long) to forced convective air flow (1-7m/s). In this report, particular attention is directed to the heat transfer from the floor which is under fluid mechanical and thermal influences of the module. Two combinations of the module and the floor are employed : a heated module on an adiabatic floor (HM/AF) and an adiabatic module on a heated floor (AM/HF). Liquid-crystal thermography is used to determine the adiabatic floor temperature (T_<ad>) on the HM/AF floor, and the heat transfer coefficient based on the difference between the surface temperature and T_<ad> on the AM/HF floor. Additional information is obtained through measurements of velocity and temperature of air in the channel. Plots of Tad and h_w show marked effects of flow development from the module and dispersion of thermal wake near the module. The distributions of air temperature and velocity defect from the undisturbed channel flow velocity show similar features to those of T_<ad>-isotherms.
社団法人日本機械学会の論文
1995-04-25