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Research on Surpressing Flow Separation of Lobed Mixer-ejector by Scarfing Treatment
Received date: 2012-03-09
Revised date: 2012-07-06
Online published: 2012-07-30
Supported by
Funding of Jiangsu Innovation Program for Graduate Education (CXZZ11_0222)
To investigate flow separation inside lobed mixer-ejector and the way to control it, the relationship between lobed angle and flow separation inside lobed mixer-ejector has been revealed. To control the flow separation inside a lobed mixer-ejector with a big lobed angle, scarfing treatment is tried to study its effectiveness in eliminating separation bubbles inside the lobed mixer-ejector by numerical simulation. Results show that scarfing treatment does eliminate the separation bubbles inside the mixer-ejector, hence enhancing nozzle ejecting ratio and reducing total pressure loss. Therefore a conclusion can be drawn that for a lobed mixer-ejector, scarfing the nozzle is a proper way to control flow separation inside lobed mixer-ejectors.
Key words： lobe; ejector; flow separation; scarfing; numerical simulation
PAN Chengxiong , ZHANG Jingzhou , SHAN Yong . Research on Surpressing Flow Separation of Lobed Mixer-ejector by Scarfing Treatment[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013 , 34(2) : 255 -262 . DOI: 10.7527/S1000-6893.2013.0029
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