Volume 44 Issue 8
Aug.  2018
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LUO Yegang, XING Yuming, LIU Xin, et al. Thermal structure analysis and simulation of solid-gelled propellant gas generator[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(8): 1772-1779. doi: 10.13700/j.bh.1001-5965.2017.0660(in Chinese)
Citation: LUO Yegang, XING Yuming, LIU Xin, et al. Thermal structure analysis and simulation of solid-gelled propellant gas generator[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(8): 1772-1779. doi: 10.13700/j.bh.1001-5965.2017.0660(in Chinese)

Thermal structure analysis and simulation of solid-gelled propellant gas generator

doi: 10.13700/j.bh.1001-5965.2017.0660
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  • Corresponding author: XING Yuming, E-mail: xym505@126.com
  • Received Date: 25 Oct 2017
  • Accepted Date: 25 Feb 2018
  • Publish Date: 20 Aug 2018
  • Solid-gelled propellant gas generator is a new and special gas generator, and is the core component of the variable-depth missile ejection system. In order to study the temperature distribution of storage space of solid-gelled propellant gas generator, the source term method, the dynamic mesh method, the RNG k-ε turbulent model and the discrete ordinates (DO) radiation model were used to numerically simulate the working process of the solid-gelled propellant gas generator. And temperature distributions under different flow rates of gelled propellant were studied and compared. The results show that most of heat that the gelled propellant obtained comes from the high-temperature gas in the extrusion chamber, and the main heat transfer happens in the axial direction. As the extrusion flow rate of gelled propellant increases, the highest and average temperatures of the gelled propellant storage space increase. The results of this study can provide a reference for the thermal protective design and improvement of this type of solid-gelled propellant gas generator.

     

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