基于格林函数法的二维不可压缩欧拉方程解析伴随解
流体动力学
2023-11-22 v2 数值分析
数值分析
计算物理
摘要
利用 Giles 与 Pierce 的格林函数方法,针对无旋基流周围的二维不可压缩欧拉方程,构建基于升力和阻力的解析伴随解。基于阻力的伴随解在流场变量方面具有非常简单的闭式表达,且在流场域内处处光滑;而基于升力的解在后驻点和尖锐后缘处因库塔条件而奇异。该奇异性通过库塔条件对驻点压力变化的敏感性,传播至后奇异性(后缘或后驻点)上游的整个分流流线(包含来流驻点流线与壁面)。
引用
@article{arxiv.2201.08128,
title = {Analytic Adjoint Solutions for the 2D Incompressible Euler Equations Using the Green's Function Approach},
author = {Carlos Lozano and Jorge Ponsin},
journal= {arXiv preprint arXiv:2201.08128},
year = {2023}
}
备注
This is a postprint (accepted version) of an article published in the Journal of Fluid Mechanics. The published version may differ from this postprint and is available at: Lozano, C., & Ponsin, J. "Analytic adjoint solutions for the 2-D incompressible Euler equations using the Green's function approach". Journal of Fluid Mechanics (2022). doi:10.1017/jfm.2022.415