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弹箭与制导学报 >

2020 , Vol. 40 >Issue 3: 119 - 122

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2020.03.027

基于FLUENT软件平台的机载外挂武器分离数值仿真

  • 管再升 ,
  • 阮文华 ,
  • 仝云 ,
  • 郝连英 ,
  • 孟万里 ,
  • 束川良
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  • 上海机电工程研究所, 上海 201109

管再升(1979-),男,陕西户县人,高级工程师,硕士,研究方向:导弹总体设计、导弹气动设计及仿真。

收稿日期: 2019-04-11

  网络出版日期: 2025-02-12

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Numerical Simulation of Airborne External Weapon Separation Based on FLUENT Software Platform

  • GUAN Zaisheng ,
  • RUAN Wenhua ,
  • TONG Yun ,
  • HAO Lianying ,
  • MENG Wanli ,
  • SHU Chuanliang
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  • Shanghai Electro-mechanical Engineering Institute, Shanghai 201109, China

Received date: 2019-04-11

  Online published: 2025-02-12

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摘要

为了解决机载外挂武器分离数值仿真问题,应用FLUENT软件的用户自定义函数求解外挂武器的气动力,并输入给嵌入的弹道和稳定控制程序获得武器下一时刻的位置和姿态,再采用“弹簧模型+局部网格重构”动网格和求解器获得更新的气动力,依次循环仿真分离过程。该方法解决了多体动网格相对运动和流场剧烈变化仿真结果收敛性不好的问题。结果表明:该方法可以比较精确的仿真机载外挂武器分离过程,为外挂物安全分离设计提供参考。

关键词： 计算流体动力学; 气动干扰; 动网格; 湍流模型

本文引用格式

管再升 , 阮文华 , 仝云 , 郝连英 , 孟万里 , 束川良 . 基于FLUENT软件平台的机载外挂武器分离数值仿真[J]. 弹箭与制导学报, 2020 , 40(3) : 119 -122 . DOI: 10.15892/j.cnki.djzdxb.2020.03.027

Abstract

In order to solve the problem of numerical simulation of separation of airborne external mounted weapons, the aerodynamic force of external mounted weapons is applied with user-defined function of FLUENT software, and the position and attitude of the weapon at the next moment are obtained by inputting the aerodynamic force into the embedded trajectory and stability control program. Then the dynamic mesh and solver of “spring model + local mesh reconstruction” are used to obtain the newer ones. Aerodynamic force is used to simulate the separation process in turn. This method solves the problem of poor convergence of simulation results of relative motion and drastic change of flow field of multi-body moving grids. The results show that this method can accurately simulate the separation process of airborne external stores, and provide a reference for the safe separation design of external stores.

Key words： computational fluid dynamics; aerodynamic interfere; dynamics mesh; turbulence model

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