Volume 29 Issue 4
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DU Chen-hui, YU Jia, LIN Gui-ping, SHEN Xiao-bin, BU Xue-qin. Analysis on supercooled large droplet impingement characteristics and ice shape of two-dimensional airfoils[J]. Journal of Aerospace Power, 2014, 29(4): 783-791. doi: 10.13224/j.cnki.jasp.2014.04.007
Citation: DU Chen-hui, YU Jia, LIN Gui-ping, SHEN Xiao-bin, BU Xue-qin. Analysis on supercooled large droplet impingement characteristics and ice shape of two-dimensional airfoils[J]. Journal of Aerospace Power, 2014, 29(4): 783-791. doi: 10.13224/j.cnki.jasp.2014.04.007
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Analysis on supercooled large droplet impingement characteristics and ice shape of two-dimensional airfoils

doi: 10.13224/j.cnki.jasp.2014.04.007

  • School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics,Beijing 100191,China

  • Received Date: 2013-01-28
  • Publish Date: 2014-04-28
    Abstract
  • Based on existing supercooled large droplet (SLD) dynamic characteristics, the effects of droplet deformation on drag were analyzed, and the effects of drag change, rebounding and splashing of SLD on droplet impingement characteristics were analyzed by several typical rebounding/splashing models. The splashing model from software of FENSAP-ICE and rebounding model from software of LEWICE 2.0 were used to study the influence of rebounding and splashing to ice shape. The results show that the droplet diameter distribution is influenced greatly by the breaking up before droplet impingement, which should be considered in calculation of impingement characteristics and ice shape; breaking up, splashing and rebounding of SLD results in the decrease of local water collection coefficient and droplet impingement region; the splashing occurs mainly near the leading edge of airfoils and rebounding occur near the edge of the impingement region; with the droplet size increasing, splashing becomes weak, while rebounding is still obvious; the effect of drag change induced by SLD deformation on ice shape and ice accretion region is negligible; compared with the ice shape without considering splashing and rebounding, the ice shape considering splashing and rebounding is approximately the same at the leading edge, while the whole ice accretion region is smaller.

     

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