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直接进行基于三维流场求解的飞艇气动优化会受到当前计算资源的限制,将飞艇三维气动性能优化问题简化为二维的气动性能优化问题,分别对比了二维平面与二维轴对称优化前后飞艇的形状和三维气动性能.结果表明,虽然两种二维流场的压差阻力所占比例完全不同,但优化后飞艇的三维气动性能都有不同程度的改善.基于二维轴对称流场的飞艇气动性能优化对飞艇的气动优化更加合理而有效,而基于二维平面流场的飞艇气动性能优化同样可以改善飞艇的气动性能.
The aerodynamic optimization of the airship directly based on the three-dimensional flow field is limited by the current computational resources. The three-dimensional aerodynamic performance optimization of the airship is simplified to a two-dimensional aerodynamic performance optimization problem. The two-dimensional and two- Shape and three-dimensional aerodynamic performance of the airship.The results show that the three-dimensional aerodynamic performance of the optimized airship is improved to some extent, although the two types of two-dimensional flow fields have quite different proportions of the pressure resistance.According to the two-dimensional axisymmetric flow field Aerodynamic performance optimization of the airship is more reasonable and effective for the aerodynamic optimization of the airship. Aerodynamic performance optimization of the airship based on the two-dimensional planar flow field can also improve the aerodynamic performance of the airship.