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发表于 2011-12-22 16:58:18
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续二:相关推论
如果本帖对“边界层”的理解为真,那么对于像飞机这样的航空器设计制造便有以下推论:在需要维持高压的区域(下翼面、翼面前缘以及它的“肚皮”),应当采取稳定和扩大“边界层”的措施——譬如使它们具有像高尔夫球面那样的“粗糙度”;与之相反,在需要维持低压的区域(例如上翼面以及它的“脊背”),则应尽可能保持平滑。这样就有助于达成以下三个目的之一:增加升力、减少燃料消耗、增加航距。 ——尤其欢迎做飞机或从事风洞实验的工程师评论、批评;
Corollaries. If the interpreting of the boundary layer in this topic is true, it means the following conjecture would be right as well. For the design of aircraft such as an airplane, the regions that need maintaining high-pressure such as the lower surface of the wing and the body, should be taken steps to enlarge and settle down the boundary layer, for example, making them to have roughness like a golf ball ------ Of course, the configuration of dimples can be discussed in more detail; On the other hand, the regions that need maintaining low-pressure such as the upper surface of the wing and body, should keep smoothing as far as possible. These may enhance lift so that to accomplish either decreasing fuel consumption or increasing flying distance.
------ welcome a comment on it, especially engineers who engage with design of aircraft or wind-tunnel.
[ 本帖最后由 loessking 于 2011-12-30 11:16 编辑 ] |
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