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2009, Volume 3, Issue 2

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Frontiers in Energy >> 2009, Volume 3, Issue 2 doi: 10.1007/s11708-009-0001-5

Experimental and CFD analysis of nozzle position of subsonic ejector

1. Institute of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; 2. WISDRI Engineering & Research Incorporation Limited, Wuhan 430223, China

Available online: 2009-06-05
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Abstract

The influence of nozzle position on the performance of an ejector was analyzed qualitatively with free jet flow model. Experimental investigations and computational fluid dynamics (CFD) analysis of the nozzle position of the subsonic ejector were also conducted. The results show that there is an optimum nozzle position for the ejector. The ejecting coefficient reaches its maximum when the nozzle is positioned at the optimum and decreases when deviating. Moreover, the nozzle position of an ejector is not a fixed value, but is influenced greatly by the flow parameters. Considering the complexity of the ejector, CFD is reckoned as a useful tool in the design of ejectors.

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