航天器在轨气体泄漏流场及声场特性仿真研究  

Simulation of characteristics of gas leakage flow field and sound field of space station in orbit

作　　者：李嘉伟 綦磊[2] 王子文 欧逍宇 LI Jiawei;QI Lei;WANG Ziwen;OU Xiaoyu(China Academy of Space Technology;Beijing Institute of Spacecraft Environment Engineering:Beijing 100094,China)

机构地区：[1]中国空间技术研究院 [2]北京卫星环境工程研究所,北京100094

出　　处：《航天器环境工程》2022年第4期340-345,共6页Spacecraft Environment Engineering

基　　金：国家自然科学基金项目(编号:51876143)。

摘　　要：航天器在轨运行安全受到空间碎片威胁,一旦发生泄漏必须及时发现与修补。泄漏流场及声场特性是声学泄漏检测的重要基础。为探究航天器在轨气体泄漏流场及声场特性,文章通过LES模型及Lighthill理论建立泄漏的流体动力学及声场模型,并进行仿真研究。针对不同孔径的漏孔,明确了泄漏模型的速度分布及声场特征,结论可为航天器在轨声学泄漏检测提供理论依据。The operation safety of spacecraft in the space environment is threatened by the space debris.Any leakage thus caused must be detected and repaired in time.The acoustic leakage detection is based on the characteristics of the flow field and the sound field.In order to study the characteristics of the flow field and the sound field of spacecraft when the gas leakage occurs in orbit,fluid dynamics and sound field models of leakage are established through the LES model and the Lighthill theory.For leak holes of different apertures,the characteristics,the velocity distributions and the Mach number distributions are obtained.The results can provide some guidance for the early warning and the detection of the location of the spacecraft on-orbit leak.

关 键 词：空间环境 气体泄漏 跨声速流场 声场 仿真研究 

分 类 号：TB774[一般工业技术—真空技术]