Numerical simulation and optimization design of fluctuation pressure environment of a rocket fairing

FAN Yuxiang; YU Yang; XI Ke; ZHAO Rui; REN Fang

doi:10.7638/kqdlxxb-2021.0314

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Numerical simulation and optimization design of fluctuation pressure environment of a rocket fairing

更新时间：2026-05-28

- Numerical simulation and optimization design of fluctuation pressure environment of a rocket fairing
- Vol. 40, Issue 6, Pages: 29-37(2022)
- 作者机构：
  
  1. 北京理工大学宇航学院,北京,100081
  2. 北京强度环境研究所可靠性与环境工程技术重点实验室,北京,100076
  3. 中国兵器工业导航与控制技术研究所,北京,100089
- 作者简介：
- 基金信息：
- DOI：10.7638/kqdlxxb-2021.0314
  CLC： V421.1
- Published：2022
- 稿件说明：
移动端阅览
樊宇翔, 于洋, 席柯, 等. 火箭整流罩脉动压力环境数值模拟与优化设计[J]. 空气动力学学报, 2022, 40(6): 29−37.

FAN Yuxiang, YU Yang, XI Ke, et al. Numerical simulation and optimization design of fluctuation pressure environment of a rocket fairing[J]. 2022, 40(6): 29-37.
樊宇翔, 于洋, 席柯, 等. 火箭整流罩脉动压力环境数值模拟与优化设计[J]. 空气动力学学报, 2022, 40(6): 29−37. DOI： 10.7638/kqdlxxb-2021.0314

FAN Yuxiang, YU Yang, XI Ke, et al. Numerical simulation and optimization design of fluctuation pressure environment of a rocket fairing[J]. 2022, 40(6): 29-37. DOI： 10.7638/kqdlxxb-2021.0314.

摘要

采用雷诺平均N-S方程（RANS）求解流场与非线性噪声方程（NLAS）求解声场相结合的方法（RANS/NLAS），对跨声速条件下火箭整流罩外部的脉动压力环境进行数值模拟与气动外形优化设计研究。通过与国内外文献及风洞试验结果对比发现，使用NLAS方法能够利用较少的网格量准确模拟脉动压力的传播历程。同时，结果表明：跨声速流动中，在火箭整流罩的头锥肩部会出现激波/边界层干扰，而在后部倒锥部位会产生大分离区，因此在肩部和倒锥区域脉动压力环境最为恶劣；随着迎角的增加，背风面头锥肩部的脉动压力环境更加恶劣，倒锥区域减缓。为抑制倒锥区域的脉动压力，新设计了直线外形、正弦曲线外形、“切线弧+圆弧”外形三种倒锥轮廓线方案，对比分析了不同方案的倒锥区域时均摩擦力系数、分离区、均方根脉动压力系数，得出了“切线弧+圆弧”外形最有利于优化其脉动压力环境的结论。

Abstract

The RANS/NLAS coupling method is used to simulate and optimize the fluctuating pressure environment of a rocket fairing under transonic conditions. The results indicate that the RANS/NLAS method can accurately simulate the fluctuating pressure with less grids. When transonic flow passes the rocket fairing

shock waves/boundary layer interaction occurs at the shoulder

and a large separation region is formed at the inverted cone

thus the fluctuating pressure environment is severe on both the shoulder and the inverted cone. With the increase of the attack angle

the fluctuating pressure environment on the leeward side of th

e shoulder becomes severe

but that on the inverted cone region tends to be alleviated. To optimize the fluctuating pressure environment at the inverted cone

three new outline profiles of the inverted cone are designed

i.e. the straight line shape

the sinusoidal line shape and the “tangent arc + circular arc” shape

respectively. The time-averaged friction coefficient

separation region

root-mean-square pressure coefficient

_rms

of the three designs are compared

and the result shows that the “tangent arc + circular arc” design is the most effective in optimizing the fluctuating pressure environment.

关键词

Keywords

references

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