W 100 "域宽度"
dW 20 "吸收层宽度"
c0 1 "声速"
rho0 1 "背景密度"
p0 1[atm]/(c0^2*rho0) "背景压力"
alpha log(2)/9 "高斯脉冲宽度"
beta 0.04 "高斯脉冲速度因子"
Ma 0.5 "马赫数"