论文成果

发布时间：

2025-04-30

论文名称：

Numerical Investigation on the Performance of Different Primary Nozzle Structures in the Supersonic Ejector

发表刊物：

Energy Procedia

摘要：

Computational fluid dynamics (CFD) technique is employed to investigate the effect of primary nozzle structures on the supersonic ejector performance. The performance of the supersonic ejectors with three different nozzle structures, including conical nozzle, petalage nozzle and crenation nozzle, have been compared under the same conditions. Compared with the ejector equipped with the conical nozzle, the entrainment ratio of petalage nozzle is slightly smaller, while the critical back pressure increases by 5.2%. Just the opposite, the entrainment ratio of crenation nozzle is slightly higher, and the critical back pressure would decrease by 2.1%. In addition, the effects of primary/induced fluid pressure on the flow field (pressure and Mach number along the ejector centerline) are observed and analyzed to explain the mixing process occurring inside the ejector. It finds out that the shape of the mixing layer in the supersonic ejector with different nozzles is different.

合写作者：

Xue K, Li K, Chen W, Chong D, Yan J

卷号：

105:

页面范围：

4997-5004

是否译文：

否

发表时间：

2016-10-05