喉部结构不对称的微喷管数值计算Numerical Simulation of Micro Nozzle from Asymmetrical Structure of Throat
童军杰,谢爱霞,岑继文
摘要(Abstract)：
以FLUENT6.1软件为工具,利用湍流k-ε模型,求解二维稳态可压缩N-S方程,模拟了微喷管内的超音速流动,分析了喷管喉部结构不对称对喷管流场与喷管出口推力的影响。这种喉部结构不对称由于喉部上下顶点在x方向上偏离一定距离所造成。数值计算结果表明,喷管喉部上下顶点在流体流动方向的不对称,将导致喷管内部流体流场不平衡性,诱导喷管内部产生康达效应,使得喷管出口的x方向推力减小,y方向产生了多余的推力。
关键词(KeyWords)： 数值计算;不对称;推力;微喷管
基金项目(Foundation):
作者(Author): 童军杰,谢爱霞,岑继文
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