摘要
传统的气动-声学风洞设计一般参考现有风洞设计经验和沿用工程估算方法,风洞各主要部件的设计依据均来自前人大量实验的归纳统计结果。本文使用计算流体力学方法(CFD)对气动-声学模型风洞流场进行模拟,得到最大喷口速度下,流道各部件压力损失系数和关键截面的流场分布。结合模型风洞实验结果,比较了某一速度工况下,实验段轴向静压系数变化和收集口出口的速度分布。CFD结果与模型风洞实验结果的一致性,表明CFD作为一种新方法,能够应用于气动-声学风洞设计中。
The aero-acoustic wind tunnel design is normally based on the experiences of the previous wind tunnel designs and engineering correlations. The performances of the major components of the aero-acoustic wind tunnel are obtained based on the test results. In the present paper, computational fluid dynamics （CFD） is used to simulate flow in an aero-acoustic model wind tunnel. The flow field and the pressure losses associated with each pieces of the major equipments are thus found numerically. Comparison was made between the CFD results and the test results obtained from the same model wind tunnel. The agreements between the CFD results and the test results indicate that CFD is a viable tool for the wind tunnel design.
出处
《空气动力学学报》
EI
CSCD
北大核心
2009年第3期373-377,共5页
Acta Aerodynamica Sinica
基金
长江学者和创新团队发展计划
高等学校学科创新引智计划:节能与环保汽车创新引智基地
编号B08019
