Volume 31 Issue 11
Nov.  2016
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WEI Kuan, TAO Zhi, DENG Hong-wu, LI Hai-wang. Hot wire test on the flow fields in a rotating square channel[J]. Journal of Aerospace Power, 2016, 31(11): 2635-2640. doi: 10.13224/j.cnki.jasp.2016.11.010
Citation: WEI Kuan, TAO Zhi, DENG Hong-wu, LI Hai-wang. Hot wire test on the flow fields in a rotating square channel[J]. Journal of Aerospace Power, 2016, 31(11): 2635-2640. doi: 10.13224/j.cnki.jasp.2016.11.010

Hot wire test on the flow fields in a rotating square channel

doi: 10.13224/j.cnki.jasp.2016.11.010
  • Received Date: 2015-10-09
  • Publish Date: 2016-11-28
  • To apply the hot wire technique in rotation condition and accurately measure the flow fields in a rotating square channel, a rotating test rig was built.Two connection modes were applied in the hot wire calibration tests, and the relative error in measuring the averaged velocity was estimated to be ±6%. The measurements were conducted in a rotating channel with the Reynolds number and rotation number varying in the range of 5000-10000, and 0-0.222, respectively. The results show that there is a shift of the velocity profile to the trailing side(Y/D=-0.5), the drift of velocity profile increases with the bigger X/D and rotation number. When the rotation number is 0.222, there is a velocity profile inflection point near the trailing side that likely is related to the secondary flow induced by Coriolis force instability.

     

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