航空学报2025，Vol.46Issue(20)：52-66,15.DOI:10.7527/S1000-6893.2025.31935
面向超声速民机近/中场声爆传播的空间推进高精度数值模拟方法
High-fidelity numerical simulation of near-/mid-field sonic boom propagation using a space-marching method for supersonic civil aircraft
摘要
Abstract
For the numerical simulation of near-/mid-field sonic boom propagation of a supersonic civil aircraft,the conventional Computational Fluid Dynamics(CFD)using a time-marching method is computationally intensive,while the acoustic propagation method based on solving the augmented Burgers equation has difficulty in simulating velocity and density variations of three-dimensional flows.To address these problems,a high-fidelity numerical simulation method of using a space-marching approach is proposed,and an in-house code"SMFlow3D"is developed.The simulation procedure consists of three steps.First,a structured Mach-aligned grid of a conical shape is generated.Second,circumferential distributions of density,velocity,and pressure variables are extracted at one-body length dis-tance from a supersonic aircraft,and are interpolated to the grid nodes as initial conditions.Third,within a finite differ-ence method framework,three-dimensional steady governing equations in a curvilinear coordinate system are solved along the post-Mach cone direction using a third-order Runge-Kutta method.The developed method was applied to simulate the near-/mid-field sonic boom propagation for the JAXA Wing Body(JWB)model,which was proposed in the 2nd Sonic Boom Prediction Workshop.The predicted sonic-boom waveforms are compared with the results ob-tained from conventional CFD method and acoustic propagation method based on the augmented Burgers equation,validating the accuracy and effectiveness of the developed method.Furthermore,near-field simulation for a Delta Wing Body model demonstrates that,compared to conventional CFD method,the developed method reduces compu-tational time by approximately 97.3%,while improving the precision of shock capturing.The developed method can provide support for rapid prediction of sonic boom and analysis of shock system evolution.关键词
超声速民机/声爆/声爆传播/空间推进格式/计算流体力学Key words
supersonic civil aircraft/sonic boom/sonic boom propagation/space-marching method/computa-tional fluid dynamics分类
航空航天引用本文复制引用
张力文,韩忠华,张科施,宋科,宋文萍..面向超声速民机近/中场声爆传播的空间推进高精度数值模拟方法[J].航空学报,2025,46(20):52-66,15.基金项目
国家自然科学基金(52472385,12072285) （52472385,12072285）
国家重点研发计划(2023YFB3002800) National Natural Science Foundation of China(52472385,12072285) （2023YFB3002800）
National Key Research and Development Program of China(2023YFB3002800) （2023YFB3002800）
