发动机羽流直挡板间接测力数值模拟研究  

Numerical simulation study on indirect force measurement of engine plume using straight baffle

作　　者：夏一展 强科杰 王志新 邓泽奇 杨斌[1] 杨杨 王莹[1] XIA Yizhan;QIANG Kejie;WANG Zhixin;DENG Zeqi;YANG Bin;YANG Yang;WANG Ying(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai Space Propulsion Technology Research Institute,Shanghai 201109,China)

机构地区：[1]上海理工大学能源与动力工程学院,上海200093 [2]上海航天动力技术研究所,上海201109

出　　处：《上海理工大学学报》2025年第1期30-37,共8页Journal of University of Shanghai For Science and Technology

基　　金：国家自然科学基金资助项目(52306215);上海市自然科学基金资助项目(20ZR1455200)。

摘　　要：为了研究羽流对直挡板间接测力的影响,通过数值模拟对羽流环境下的直挡板受力情况进行分析,研究了不同挡板直径、位置等结构参数下的受力情况。结果表明,挡板与喷管出口间距离和出口直径的比值接近1.5,以及挡板直径和出口直径的比值接近2.5时,挡板受到的冲击力最大,此时挡板对测力影响最小。基于数值模拟结果,选择最佳实验装置设计参数,搭建了羽流挡板间接测量装置。通过实验,获得了不同工况条件下直接测力与挡板间接测力结果,并基于线性拟合,推导出羽流直挡板间接推力修正公式。研究成果可为同类挡板羽流间接测力装置设计提供参考与借鉴。To investigate the impact of plume flow on the indirect force measurement of baffles,numerical simulations were executed on the force on baffles in the presence of plume flow.Structural parameters including baffle size,position,and force distribution were scrutinized.Findings indicated that optimal baffle performance occurred when the distance between the baffle and nozzle outlet was approximately 1.5 times the outlet diameter,and the baffle diameter was around 2.5 times the outlet diameter,resulting in the maximum impact force with minimal influence from the baffle.On the basis of numerical simulations,an optimal experimental device design parameters for the plume baffle were selected,and an indirect measurement device was constructed.The direct force measurement and indirect force measurement results of the baffle were obtained under different operating conditions through experiments.The indirect thrust correction formula for the plume baffle was obtained through linear fitting.The research results could provide reference for the design of similar indirect force measurement devices for baffle.

关 键 词：发动机 挡板间接测力 羽流数值模拟 推力测量 

分 类 号：O354[理学—流体力学]