【摘要】 本文与文献[1]一起构成运动物体与涡量场相互作用的不可压理论。本文证明:不可压流体对物体的作用方式同物面产生涡量的方式直接对应。特别是,匀速运动的三维物体所受的合力等于物面涡量流矢矩的面积分,纯运动学效应造成的表面力变化完全对消。这不仅加深了关于流体对物体作用机理的理解,而且为分析和改善物体受力状况提供了新的原理。更多还原

【Abstract】 This paper, together with a preceding work[1], gives an incompressible theory on the interaction, between moving bodies and vorticity field.We show that the action of incompressible fluids on moving bodies can be attributed to the reaction of the vorticity generated by the bodies, in a way precisely corresponding to that in which the bodies generate vorticity. In particular, for a uniformly moving three-dimensional body, the total force just equals the surface integral of the vectorial moment of local vorticity flux, the remaining effects being completely cancelled, this result not only gives a deeper understanding of the mechanism of interaction between bodies and fluids, but also suggests a new possible approach to improve the force characteristics by some local designs.更多还原