大攻角侧向多喷干扰流场特性数值模拟

doi:10.7527/S1000-6893.2015.0054

航空制导武器专栏

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大攻角侧向多喷干扰流场特性数值模拟

李斌^1,2, 王学占¹, 刘仙名^1,2

1. 中国空空导弹研究院, 洛阳 471009;
2. 航空制导武器航空科技重点实验室, 洛阳 471009

收稿日期:2015-01-16 修回日期:2015-03-01 出版日期:2015-09-15 发布日期:2015-03-16
通讯作者: 李斌男, 博士, 高级工程师。主要研究方向: 导弹气动设计, 计算流体力学。 Tel.: 0379-63385270 E-mail:lib_in@163.com E-mail:lib_in@163.com
作者简介:王学占男, 工程师。主要研究方向: 导弹气动设计, 计算流体力学。 Tel.: 0379-63385270 E-mail: wangxuezhan2001@163.com;刘仙名男, 博士, 研究员。主要研究方向: 导弹总体、气动设计。 Tel.: 0379-63384490 E-mail: liuxming@163.com
基金资助:
航空科学基金(2014ZA12001)

Numerical investigation of multi-lateral jets interactions flow characteristics at high angle of attack

LI Bin^1,2, WANG Xuezhan¹, LIU Xianming^1,2

1. China Airborne Missile Academy, Luoyang 471009, China;
2. Aviation Key Laboratory of Science and Technology on Airborne Guided Weapons, Luoyang 471009, China

Received:2015-01-16 Revised:2015-03-01 Online:2015-09-15 Published:2015-03-16
Supported by:
Aeronautical Science Foundation of China (2014ZA12001)

摘要/Abstract

摘要：

采用计算流体力学(CFD)方法研究了大攻角状态下侧向多喷口干扰复杂流场对导弹气动特性的影响。首先通过喷流标模和大长细比导弹模型的雷诺平均Navier-Stokes(RANS)数值模拟,分别验证了所采用的仿真方法对喷流干扰流场和导弹大攻角流动求解的能力;其次采用RANS方程组对大攻角状态侧向多喷干扰流场进行了数值模拟,表明攻角与喷口数量对导弹气动载荷分布产生较大的影响;然后通过对比分析有/无喷流时法向力系数沿导弹轴向的分布,以及流场结构,揭示了不同攻角时喷流干扰流场对导弹气动特性影响的流动机理;最后给出了侧向喷流对导弹建立攻角时间影响的初步分析,表明与采用单独气动舵进行姿态控制相比,在10 km高度采用侧向喷流直接力控制不能提高导弹的快速性。

关键词: 导弹, 大攻角, 侧向喷流, 气动特性, 计算流体力学

Abstract:

The influence of the interaction flow field with multi-lateral jets on the aerodynamic characteristics of one missile at high angles of attack is investigated using computational fluid dynamics (CFD) method. The CFD method based on Reynolds-averaged Navier-Stokes (RANS) equations is first validated using a standard model with lateral jet and a missile of high fineness ratio, and the capability of solving jet interaction flow field and flow field around a missile at high angles of attack is confirmed. Numerical simulations are then performed on the interaction flow field with multi-lateral jets at high angles of attack. The results show that the angle of attack and the number of lateral jets have a relatively large influence on the aerodynamic load distribution. The differences in the axial distribution of the normal force coefficient and the flow structure between jet-on and jet-off reveal the mechanism of the jet interaction effects on the aerodynamic characteristics of the missile at different angles of attack. Preliminary analysis of the influence of the lateral jets on the pull-up maneuver is provided in the end and the results show that the lateral jets cannot speed up the pull-up process at an altitude of 10 km.

Key words: missile, high angle of attack, lateral jets, aerodynamic characteristics, computational fluid dynamics

中图分类号:

V211.3

李斌, 王学占, 刘仙名. 大攻角侧向多喷干扰流场特性数值模拟[J]. 航空学报, 2015, 36(9): 2828-2839.

LI Bin, WANG Xuezhan, LIU Xianming. Numerical investigation of multi-lateral jets interactions flow characteristics at high angle of attack[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(9): 2828-2839.

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

大攻角侧向多喷干扰流场特性数值模拟

Numerical investigation of multi-lateral jets interactions flow characteristics at high angle of attack

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