非对称物体上的波阻
Wave drag on asymmetric bodies
摘要：
具有尖前缘和圆后缘的非对称体向前运动产生的波扰动比向后运动产生的波扰动小，这反映在波阻系数中。Michell的波阻理论（Michell，1898）没有捕捉到这个实验事实。在这项研究中，我们使用一个拖槽实验来研究不对称性对波阻的影响，并表明这些影响可以通过修改Michell的理论来复制，包括一个破环边界层的增长。我们发现，不对称可以有一个积极的或消极的影响阻力，取决于运动的深度和弗劳德数。
英文摘要：
An asymmetric body with a sharp leading edge and a rounded trailing edge produces a smaller wave disturbance moving forwards than backwards, and this is reflected in the wave drag coefficient. This experimental fact is not captured by Michell's theory for wave drag (Michell 1898). In this study, we use a tow-tank experiment to investigate the effects of asymmetry on wave drag, and show that these effects can be replicated by modifying Michell's theory to include the growth of a symmetry-breaking boundary layer. We show that asymmetry can have either a positive or a negative effect on drag, depending on the depth of motion and the Froude number.
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