Volume 28 Issue 11
Nov.  2013
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WANG Peng-fei, TIAN Hui, YU Nan-jia, CAI Guo-biao. Two-phase flow numerical calculation of H2O2/HTPB hybrid rocket engine with diaphragm in grain[J]. Journal of Aerospace Power, 2013, 28(11): 2621-2626.
Citation: WANG Peng-fei, TIAN Hui, YU Nan-jia, CAI Guo-biao. Two-phase flow numerical calculation of H2O2/HTPB hybrid rocket engine with diaphragm in grain[J]. Journal of Aerospace Power, 2013, 28(11): 2621-2626.

Two-phase flow numerical calculation of H2O2/HTPB hybrid rocket engine with diaphragm in grain

  • Received Date: 2012-10-26
  • Publish Date: 2013-11-28
  • The effect of diaphragm in grain on combustion performence of hybrid rocket engine was studied.The standard φ 100mm hybrid rocket engine of Beijing University of Aeronautics and Astronautics was selected as a computational model,and 98% hydrogen peroxide(H2O2)/hydroxyl terminated polybutadiene (HTPB) was combined as propellant;different hole diameters of diaphragm setting at different grain positions were computed by 2-D axial symmetry and gas-liquid two-phase flow model.The results show that smaller diameter of diaphragm hole and the diaphragm setting at positions ranging from 50% to 70% of grain length can obtain the largest averaged regression rate of fuel and the highest combustion efficiency.This conclusion will provide a theory evidence for design of the diaphragm.

     

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