Volume 33 Issue 11
Nov.  2018
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Numerical study on water film flow and sheddingin ice accretion of rotating spinner[J]. Journal of Aerospace Power, 2018, 33(11): 2725-2736. doi: 10.13224/j.cnki.jasp.2018.11.019
Citation: Numerical study on water film flow and sheddingin ice accretion of rotating spinner[J]. Journal of Aerospace Power, 2018, 33(11): 2725-2736. doi: 10.13224/j.cnki.jasp.2018.11.019
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Numerical study on water film flow and sheddingin ice accretion of rotating spinner

doi: 10.13224/j.cnki.jasp.2018.11.019
  • Received Date: 2018-01-03
  • Publish Date: 2018-11-28
    Abstract
  • In order to simulate ice accretion accurately, a water film shedding model on rotating surface was introduced with the method of work balance analysis based on the current three-dimensional coupled model of ice accretion and thin water film on ice surface. A computational methodology and a criteria of water film shedding were then presented. Water film shedding occurred when the work done by air drag force plus potential energy caused by centrifugal force was greater than adhesive work. When the method to numerical simulation of rotating spinner, the simulation results agreed well with experimental results, indicating the current model was reasonable and computational method was feasible. The effect of rotating speed and air speed on water film shedding and ice shape was also simulated. The results show that the proportion of water film shedding increased with larger rotating speed and air speed. The ice mass decreased 13.4% and 15.8% respectively due to water film shedding, when rotating speed was 3000r/min and 6000r/min.The ice mass decreased 12.2%, 13.4% and 14.2% respectively due to water film shedding, when air speed was 40m/s, 50m/s and 60m/s.

     

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