1、

Based on energy equation, it is proposed that thermal drag in non-viscous horizontal duct should be equal to total pressure loss of air flow passing through heating zone, and not equal to static pressure loss.

根据能量方程提出水平无粘管流的热阻力应等于气流经过加热区的全压力降,而非静压力降;

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2、

winglets affect the part of drag called induced drag. as air is deflected the wing, the total lift vector tilts back.

由于气流的方向受机翼影响而发生转折,合升力的方向就向后倾斜。

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3、

based on the comparison of drag force and lift force under various configurations, an approximate formula is proposed, which can estimate the total force interference coefficient when the distance between two towers is given.

通过对各测层阻力和升力在各种排列下的干扰系数比较分析,给出了基于塔间距计算风致合力干扰系数的近似公式。

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4、
5、

Cavity length depth ratio strongly influences flow field, total pressure recovery, drag coefficient.

凹腔长深比对流场特性 、 总压恢复 、 燃烧室阻力影响显著.

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