多次弯曲循环下细径管结构变化对管内流动的影响分析  

Impacts Analysis of Structural Changes of Small Diameter Tube under Multi-step Bending on Gas Flow Characterisitcs

作　　者：任旭东[1] 徐李华 温雯[1] 王小刚[1] 曾祥兵[1] 廖彬[1] REN Xu-dong;XU Li-hua;WEN Wen;WANG Xiao-gang;ZENG Xiang-bing;LIAO Bin(Institute of System Engineering,China Academy of Engineering Physics,Mianyang 621900,China)

机构地区：[1]中国工程物理研究院总体工程研究所,绵阳621900

出　　处：《科学技术与工程》2018年第19期306-310,共5页Science Technology and Engineering

基　　金：国家自然科学基金(11502259)资助

摘　　要：针对多次弯曲循环下细径管内结构变化对管内流动的影响问题开展了弯曲循环试验以及管内气体流动数值模拟研究,获得了不同弯曲循环次数下的细径管内结构尺寸变化情况,认识了多次弯曲循环下细径管的结构变化规律;建立了能较真实地反映试验情况的三维计算模型,获得了结构变化对管内流动特性的影响。The impacts of structural changes of small diameter tube under multi-step bending on gas flow characterisitcs were studied by multi-step bending experiments and CFD numerical simulation,and the structural changes of small diameter tube were analyzed.The three dimensional models which could simulate experimental state were established,and the impacts of structural changes on gas flow characterisitcs were obtained.

关 键 词：弯曲循环 细径管 截面扁化 气体流动 CFD数值模拟 

分 类 号：V411.3[航空宇航科学与技术—航空宇航推进理论与工程]