Volume 36 Issue 1
Jan.  2021
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WANG Junqi, WANG Tao, LIU Yu. Influence of exhaust gas ingestion on engine inlet distortion[J]. Journal of Aerospace Power, 2021, 36(1): 97-103. doi: 10.13224/j.cnki.jasp.2021.01.012
Citation: WANG Junqi, WANG Tao, LIU Yu. Influence of exhaust gas ingestion on engine inlet distortion[J]. Journal of Aerospace Power, 2021, 36(1): 97-103. doi: 10.13224/j.cnki.jasp.2021.01.012

Influence of exhaust gas ingestion on engine inlet distortion

doi: 10.13224/j.cnki.jasp.2021.01.012
  • Received Date: 2020-06-04
  • Publish Date: 2021-01-28
  • In order to understand the distortion characteristics of the engine inlet face due to exhaust gas ingestion, a ground test was done to acquire the total pressure and total temperature data of the engine inlet face. Based on the measurement data, an analytical study on the features of the temperature and pressure distortion and the influences on the temperature distortion intensity were carried out. The results showed that the deflected exhaust gas can be ingested by the inlet, which could produce a temperature distortion on the engine inlet face, in this situation the flow field on the engine inlet face was a combination of temperature and pressure distortion. The hot exhaust gas ingestion can raise the pressure in the low pressure region on the engine inlet face, and lower the steady pressure distortion. As the engine working thrust lever was improved and the working time was increased, the temperature distortion intensity peak was higher. The change of the temperature flow field lagged behind that of throttle, indicating a dynamic changing flow field, but the temperature rise rate was relatively low.

     

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