GJB 150A淋雨试验强化试验程序 数值模拟和试验装置设计研究  

The Study on Numerical Simulation of GJB 150A Rain Test Enhancement Test Procedure and Experimental Device Design

作　　者：王晓森[1,2] 邵康 陶林 董龙雷 WANG Xiao-sen;SHAO Kang;TAO Lin;DONG Long-lei(Beijing Institute of Structure and Environment Engineering,Beijing 100076,China;Tianjin Aerospace Reliability Technology Co.Ltd,Tianjin 300462,China;School of Aeronautics and Astronautics,Xi¢an Jiaotong University,Xi¢an 710049,China)

机构地区：[1]北京强度环境研究所,北京100076 [2]天津航天瑞莱科技有限公司,天津300462 [3]西安交通大学航天航空学院,西安710049

出　　处：《装备环境工程》2021年第10期139-144,共6页Equipment Environmental Engineering

摘　　要：目的研究GJB 150.8A—2009《军用装备实验室环境试验方法第8部分:淋雨试验》中强化试验程序的工程实现方法。方法在标准解读的基础上,以强化试验程序用喷嘴为对象,建立数值模型,分析喷嘴在强化试验程序过程中的流场分布,并基于分析结果给出强化试验程序试验装置设计的思路和方法。结果在喷嘴内,压力变化剧烈,极短距离内由276 kPa迅速降至101 kPa。水流经过喷嘴经历了激烈的加速过程,从距离喷嘴出口0.01~0.4 m,水流速度从251 m/s迅速降至17.8 m/s,到远场趋于稳定。结论分析结果对指导强化试验程序的试验装置的设计和试验实施具有重要参考意义。The paper aims to study the engineering implementation method of enhancement test procedure in GJB 150.8A—2009,Laboratory Environmental Test Methods for Military Materiel Part 8:Rain Test.Based on the interpretation of the standard,a numerical model was established to analyze the flow field distribution of the nozzle during the enhancement test procedure.Based on the analysis results,the design idea and method of the enhancement test procedure test device were given.The results show that the pressure changes sharply in the nozzle,which changes from 276 kPa to 101 kPa in a very short dis-tance from the inlet to the outlet.The flow of water undergoes a violent acceleration process through the nozzle,from 0.01 m to 0.4 m away from the nozzle outlet,the water flow velocity rapidly decreases from 251 m/s to 17.8 m/s,and tends to be stable in the far field.The analysis results have important reference significance to guide the design and implementation of enhancement test procedure test device.

关 键 词：淋雨试验 强化试验程序 流场分析 试验装置设计 

分 类 号：V216.5[航空宇航科学与技术—航空宇航推进理论与工程]