含能材料等离子体点火过程的数值模拟

Numerical Simulation of Plasma Ignition of Energetic Materials

建立含能材料在等离子体作用下的强瞬态热传导模型 ,对Dufort Frankel差分格式进行了修正 ,使得时间和空间都是二阶精度 ,并对含能材料等离子体点火过程进行数值模拟。结果表明 ,( 1 )含能材料药粒直径变化对等离子体点火性能有较大的影响 ,小药粒条件下 ,点火延迟时间会明显缩短。 ( 2 )等离子体温度的增加会使含能材料的点火时间缩短。 ( 3)

An instantaneous heat conduction model of plasma ignition of energetic materials is established.In order to obtain a two order difference scheme,the difference scheme of Dufort Frankel is corrected.The plasma ignition of energetic materials is simulated and some conclusions are drawn:(1) The propellant particle size of energetic materials has a great influence on plasma ignition performances,especially at small particles,and ignition delay is shortened.(2) With the increase of plasma temperature,the ignition time of energetic materials is also shortened.(3) The plasma radiation absorption also influences the plasma ignition delay of energetic materials.