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首页> 外文期刊>International Journal of Heat and Fluid Flow >Experimental investigation of forced flow regime transition in a dual bell nozzle by secondary fluidic injection
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Experimental investigation of forced flow regime transition in a dual bell nozzle by secondary fluidic injection

机译：二次流体注射液中双钟喷嘴中强制流动调节的实验研究

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摘要

Experiments on an axisymmetric dual-bell nozzle were performed at EDITH nozzle test facility of CNRS in Orle ' ans, France. The main purpose of the study was to explore the possibility of controlling the flow regime transition by a secondary fluidic injection in the dual bell nozzle. The main focus of the present paper is to investigate the impact of the secondary injection parameters on the flow regimes transition in such nozzles. Secondary injection has been found to effectively control the flow regime transition and consequently to increase the propulsive performance of the device. It has also been pointed out that even a very low injected secondary mass flow rate leads to the control of the transition and contributes to reducing the lateral loads which can exist, moreover, when transitions are operated without injection.
机译：在法国奥勒'ANS的CNRS的Edith喷嘴测试设施上进行了轴对称双钟喷嘴的实验。 该研究的主要目的是探讨通过双钟喷嘴中的二次流体喷射来控制流动调节的可能性。 本文的主要焦点是研究二次注射参数对这种喷嘴中的流动制度转变的影响。 已经发现二次注射有效地控制流动调节过渡，从而增加了装置的推进性能。 还指出，即使是一个非常低的注射的二次质量流量也导致过渡的控制，并且有助于减少可以存在的横向载荷，而且在没有喷射的情况下操作过渡时可以存在。

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