高空侧向喷流干扰效应数值研究  

Numerical study of lateral jet interaction at high altitude

作　　者：赵弘睿 龚安龙[1] 刘周[1] 杨云军[1] ZHAO Hongrui;GONG Anlong;LIU Zhou;YANG Yunjun(China Aerospace Aerodynamics Technology Research Institute,Beijing 100074,China)

机构地区：[1]中国航天空气动力技术研究院,北京100074

出　　处：《空气动力学学报》2020年第5期996-1003,I0004,共9页Acta Aerodynamica Sinica

基　　金：国家自然科学基金(11772317)。

摘　　要：采用基于组分掺混模型的高空低密度环境下的侧向喷流数值模拟方法,针对锥柱裙导弹外形开展了典型高空高速飞行环境下的侧向喷流干扰效应研究。通过研究喷管出口压力、飞行高度和来流迎角等因素对于喷流干扰效应的影响,获取了相关流动结构特征和喷流干扰力/力矩放大因子的变化规律。研究结果表明,喷流干扰效应对喷流出口压比和来流迎角比较敏感。随着压比的增加,壁面附近的流动分离干扰先减弱后增强,而空间流动干扰则不断增强;迎角增加导致背风面的壁面与空间喷流干扰区前移,而随着喷管出口压比的增大,迎角的影响不断减弱。研究结果可对工程型号的喷流控制设计和分析提供参考。In this paper,a numerical simulation method based on components mixed model is used to simulate lateral jet flow in high-altitude and low-density environment.Investigations of the lateral jet interaction are carried out on a missile shape.By studying the effects of nozzle outlet pressure,flying altitude,and angle of attack on jet interaction,the characteristics of the flow structure and jet interaction amplification factor are obtained.The results of the studies indicate that the jet interaction is sensitive to nozzle outlet pressure and angle of attack.The flow separation area near the wall decreases first and then increases with the increase of outlet pressure,while the jet interaction area away from the wall continue to grow.The increase of angle of attack leads to the forward leeward jet interaction area.With the increase of outlet pressure,the impact of the angle of attack becomes weak.The results have a good reference value for the design and analysis of the jet control system.

关 键 词：侧向喷流 数值模拟 高空 流动分离 

分 类 号：V221.3[航空宇航科学与技术—飞行器设计]