Volume 31 Issue 9
Sep.  2016
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Article Navigation >  Journal of Aerospace Power  > 2016  >  31(9): 2115-2123
LIU You-hong, CHEN Zhong-yuan, XU Hua-sheng, ZHONG Shi-lin, HUANG Yi-yong, XIE Jian-guang. Effect of width of skirted mixer on performance of mixing diffuser with par-allel intake[J]. Journal of Aerospace Power, 2016, 31(9): 2115-2123. doi: 10.13224/j.cnki.jasp.2016.09.009
Citation: LIU You-hong, CHEN Zhong-yuan, XU Hua-sheng, ZHONG Shi-lin, HUANG Yi-yong, XIE Jian-guang. Effect of width of skirted mixer on performance of mixing diffuser with par-allel intake[J]. Journal of Aerospace Power, 2016, 31(9): 2115-2123. doi: 10.13224/j.cnki.jasp.2016.09.009
shu

Effect of width of skirted mixer on performance of mixing diffuser with par-allel intake

doi: 10.13224/j.cnki.jasp.2016.09.009

  • 1. National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics, School of Power and Energy Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;

  • 2. China Gas Turbine Establishment, Aviation Industry Corporation of China, Chengdu 610500, China

  • Received Date: 2014-12-15
  • Publish Date: 2016-09-28
    Abstract
  • In order to clarify the effects of width of skirted mixer on flow field, streamwise vorticities, thermal mixing efficiency, total-pressure recovery factor,average speed and speed factor as well as temperature evenness of outlet of mixing diffuser, different widths of skirted mixer were studied quantitatively through the three-dimensional numerical simulations based on Navier-Stokes(N-S) equations, and the principle of effects on aerothermodynamic performance was obtained. Results show that, when width of skirted mixer varies from 40mm to 130mm, stream-wise vorticities increase at the outlet of mixing diffuser with the growing width, and the flow mixing of internal and external bypass can be promoted. Thermal mixing efficiency firstly increases and then decreases as the width increases, and the total-pressure recovery coefficient linearly decreases as the width increases generally. The average speed and speed factor of outlet of mixing diffuser linearly decrease as the width increases, and the temperature evenness of outlet of mixing diffuser increases with the growing width.

     

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