进气道风洞试验分布式流量调节技术研究与试验验证

分布式流量调节将风洞试验中的进气道出口后的流动转化为多个区域的流动，通过调整导流片组合之间的相对位置，改变导流片组合之间不同区域的流通面积，实现流体流量的调节。利用商业软件对节流锥流量调节与测量装置简化模型和分布式流量调节与测量装置简化模型进行了数值模拟，并在FL-24风洞对分布式流量调节方法进行了验证。研究结果表明:分布式流量调节具有较高的流通能力和调节效率，能够有效降低流量调节与测量装置的外形尺寸；进气道喘振前，分布式流量调节与节流锥调节的试验结果一致性较好；分布式流量调节分解了调节装置对上、下游流动的干扰，特别是对上游流动均匀性基本没有影响。

Technology research and test verification of distributed flow regulator for inlet test in wind tunnel

The downstream flow of inlet model can be translated into multiple regions by the distributed flow regulator which is composed of two sets of guide vanes. The mass flow is regulated by adjusting the relative position which changes the flow area between the two sets of guide vanes. Two simplified models of the distributed regulator and throttle cone are simulated by commercial software and improved in FL-24 wind tunnel. It is shown that the distributed regulator owns good flow and regulating capacities. Owing to the technology of distributed flow regulator, the size of the flow-meter can be decreased. The results from the distributed regulator are in good agreement with ones from the throttle cone when there is no surge emerging. Also it has little effect on the whole flow field, especially on the upper flow.