Moreover, the heat transfer coefficients for additional surface were even three times lower than those of the bundle.

而且，附加表面的传热系数甚至等于集束管传热系数的三分之一。

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In this paper the results of calculations of the coefficients of skin friction and heat transfer (Stanton number) on the surface of hypersonic flight vehicle are presented.

本文给出了高超声速飞行器表面摩阻和传热系数(斯坦顿数)的计算结果。

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The experimental results showed that the heat transfer coefficients for the porous surface tubes are 1.7~2.2 times larger than that for smooth tube.

实验结果表明，机加工管的传热性能比同规格的工业光管及T型翅片管的传热性能有较大提高，在实验热负荷内其沸腾传热系数是光管的1.7~2.2倍。

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