The Effect of Blowing and Suction on Heat Transfer by Free Convection from a Vertical Flat Plate

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  • 垂直平板からの自然対流熱伝達に及ぼす吹出し, 吸込みの影響
  • スイチョク ヘイバン カラ ノ シゼン タイリュウ ネツ デンタツ ニ オヨボス フキダシ , スイコミ ノ エイキョウ

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Abstract

The effect of suction and blowing on free convection heat transfer along a vertical flat plate is analysed by an approximate method by using the integral formulas for momentum and energy equations. There are similar solutions, if the surface temperature distribution is expressed by the equation Tω=T∞+Axn (x : distance from leading edge, A, n : constant, T∞ : temperature at quiescent ambient fluid) and the blowing and suction rate distributions are proportional to x(n-1)/4. Approximate similar solutions under these conditions may be applied for any exponent n(0≨n≨1) in a power law temperature distribution and the gases for any Prandtl number, if the blowing and suction Reynolds number is restricted within the following range. at n=0 [numberical formula] at n=1 [numberical formula] where ν is the kinematic viscosity of fluid and Grx denotes the local Grashof number at the position x.

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