Volume 32 Issue 1
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Numerical analysis of heat transfer of moving EBW in micro propellant tank.[J]. Journal of Aerospace Power, 2017, 32(1): 35-41. doi: 10.13224/j.cnki.jasp.2017.01.006
Citation: Numerical analysis of heat transfer of moving EBW in micro propellant tank.[J]. Journal of Aerospace Power, 2017, 32(1): 35-41. doi: 10.13224/j.cnki.jasp.2017.01.006

Numerical analysis of heat transfer of moving EBW in micro propellant tank.

doi: 10.13224/j.cnki.jasp.2017.01.006
  • Received Date: 2015-05-12
  • Publish Date: 2017-01-28
  • Numerical model of analyzing temperature field for propellant tank with moving resource electronbeam welding (EBW) was set up, with which the heat source of EBW was described by cone source and the latent heat of melting was determined by means of equivalent specific heat. Time evolutions of temperature distribution on tank, molten pool shape and size were obtained.Results showed that, the error ratio of temperature between calculation and measurement was less than 10%. During the later welding process, the pure cupper radiator plate installed on the outer surface of the tank could be used to reduce the temperature of the diaphragm of propellant tank from 503K to lower than 364K, avoiding the structure damage due to high temperature. The calculation method and heat radiation figuration can also be adopted to other products welding process.

     

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