回转体最小阻力外形优化设计

Optimum Shaping Design of Axisymmetric Bodies for Minimum Drag

本文利用现代流体力学计算技术,采用复合形法(COMPLEX),对八维参量的回转体最小阻力外形进行优化设计。结果表明:在一定的约束条件下,可通过层流边界层的延长,寻求回转体的最小阻力外形,并且在一定的雷诺数下,存在唯一的最小阻力外形。因此,在当今水下航行器(比如鱼水雷等)设计中,本文提出的优化设计方法具有一定的应用价值。

Based on the modern digital technology of fluid mechanics, the eight-parameter optimum axisymmetric bodies for minimum drag are obtained by using COMPLEX method. The results show that under the certain constraints the axisymmetrit bodies for minimum drag can be found by extending the laminar layer, and there exist the only axisymmetric bodies for minimum drag at the certain Renolds number. Therefore, the optimization method presented here would be of great pratical value in the submarine vehicles (torpedoes and mines etc. ) design.