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侧向喷流控制研究一个很重要的目的在于了解、掌握喷流与来流的干扰,寻找提高喷流控制效率的方法,不同截面多喷流同时工作便是其中一种。多喷流同时作用时,下游喷流会受到上游喷流的影响,与直接来流干扰现象不同,控制效率不同。针对这种情况,1m高超声速风洞从测压和测力两方面进行了多喷口喷流对侧向喷流控制影响的风洞试验研究。试验采用锥柱模型,喷管均位于同一母线上,喷管数目为单喷和三喷。结果表明:上游喷流的低压区会影响下游喷流,当喷流数目增加时,喷流与来流的干扰与多个单喷的叠加完全不同。
A very important purpose of lateral jet flow control research is to understand and master the interference of jet flow and incoming flow, and to find a way to improve the jet flow control efficiency. One of them is the multi-jet jet flow with different cross-sections. When multiple jets act at the same time, the downstream jets will be influenced by the upstream jets. Different from the direct disturbances, the control efficiency is different. In view of this situation, the wind tunnel experiment on the effect of multi-jet flow on the lateral jet flow control was carried out in the 1m hypersonic wind tunnel from both pressure measurement and force measurement. Test the use of cone model, the nozzles are located in the same bus, the number of nozzles for the single spray and three spray. The results show that the low pressure area of the upstream jet affects the downstream jet. When the jet number increases, the interference between the jet and the incoming flow is completely different from that of multiple single jet.