Numerical Analysis for Reasons of Ablation of Both the Pot and Bracket in the Experiment Determining Oxygen-Poor Propellant Combustion Heat
Because the pot and pot bracket were burned out in the experiment for measuring combustion heat of a poor oxygen propellant by equipments of GR-3500 type oxygen bomb, an unsteady numerical model coupling combustion, flow and heat conduction processes was developed. Basing on this model, simulation was carried out for the physical processes in the experiment, and the reason why the pot and pot bracket is burned out is interpreted successfully. Computational results show that: oxygen bomb can work safely without thermal protection because of the low wall temperature; a new material with high melting point should be used for the pot, because its wall temperature is beyond its melting temperature; placing the bracket under the pot can protect it from being burned out; it is beneficial that the pot is positioned close to bottom of oxygen bomb, for most oxygen concentrating in the region of pot bottom at the end of test.
oxygen bomb calorimeter, oxygen-poor propellant fluid-solid coupling unsteady numerical simulation
YANG Yuxin WANG Yinghong HU Chunbo CAI Timin FAN Jian
College of Astronautics, Northwestern Polytechnic University, Xian 710072, Shaanxi, China
国际会议
西安
英文
723-726
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）