浸出冷却の研究 : 異物質の浸出のある圧縮性乱流境界層の近似計算

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  • A Study of the Sweat Cooling : An Approximate Calculation of the Compressible Turbulent Boundary Layer with a Foreign Gas Injection
  • シンシュツ レイキャク ノ ケンキュウ

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In our present analysis in addition to the usual time averaged turbulent boundary layer differential equations of momentum and energy, a concentration equation is used. We assumed that the specific heat at a constant pressure of the main flow fluid and the coolant are same and independent of the temperature. It is also assumed that the Prandtl Number, turbulent Prandtl Number, Schmidt Number and turbulent Schmidt Number are all 1 and are independent of the temperature in both fluids. Due to the above assumptions, as an example we adopt CO2 gas as a coolant and the air as the main flow fluid and calculate the skin friction coefficient (consequently heat transfer coefficient) as a function of Reynolds Number referring to the length along the wall.

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