Volume 30 Issue 1
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HU Xiao-lei, LE Gui-gao, MA Da-wei, LI Ren-feng. Numerical study of gas-steam ejection gas-liquid two-phase flow field under water[J]. Journal of Aerospace Power, 2015, 30(1): 164-172. doi: 10.13224/j.cnki.jasp.2015.01.023
Citation: HU Xiao-lei, LE Gui-gao, MA Da-wei, LI Ren-feng. Numerical study of gas-steam ejection gas-liquid two-phase flow field under water[J]. Journal of Aerospace Power, 2015, 30(1): 164-172. doi: 10.13224/j.cnki.jasp.2015.01.023
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Numerical study of gas-steam ejection gas-liquid two-phase flow field under water

doi: 10.13224/j.cnki.jasp.2015.01.023

  • School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

  • Received Date: 2014-05-09
  • Publish Date: 2015-01-28
    Abstract
  • Based on computational fluid dynamic method and homogeneous multiphase theory,vaporization model was adopted to simulate vaporization between gas and cooling water, and missile's motion was simulated by dynamic zone mesh motion method. Three-dimensional unsteady gas-steam ejection gas-liquid two-phase flow field was studied. Compared with the experiment of solid rocket flow field injection with water, this proved that the numerical method was reliable. The flow field structure, secondary flow, load characteristic and internal trajectory in variable depth ejection during ejection were studied. The results show that the evaporation occurs on the wall of the pipe. The gas-steam high temperature region migrates with the increase of tube volume during ejection. Isolation region and secondary flow exist at cross section of the tube and pipe, and form different eddy structures. The maximum impact force occurs on the wall of the pipe between 30° and 60° bend angle at 0.16s. With the ejection depth increasing 10 m, the pressure of monitor is added by 0.25MPa and time of missile motion is delayed 0.01s.

     

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