When a rocket is launched,the gas jet at the tail will form a gas impact flow field with a complex wave structure.In order to analyze the impact of gas on the launching platform,a three-di-mensional numerical simulation model of the gas jet in the rocket tail was established based on the fi-nite volume method,the Realizable k-ω model and the interior ballistic process.Taking the rocket launcher installed on the launching platform as an example,when the rocket was fired at 15° and 28° respectively,the propellant gas flow field emitted from the tail was calculated to analyze the impact of the jet on the wall of the platform,and the jet velocity field at different times and elevating angles was obtained,as well as the impact pressure on the wall.Then a pressure curve was drawn and the impact change process was analyzed.The results were compared with the experiment results to verify the accu-racy of the numerical simulation results.The impact effect of the propellant gas jet on the wall is obviously larger when the elevating angle is 28° compared with the elevating angle of 15°.
关键词
燃气射流/发射平台/内弹道/火箭弹高角/气流速度场/冲击压力
Key words
gas jet/launching platform/interior ballistics/rocket high angle/jet velocity field/im-pact pressure
维普
万方数据