Using the weakly compressible fluid model and scalar wave equation,a numerical study was carried out for the gas thermal effects on laser propagating in a closed tube full-filled with air.

• 仿真结果与实验结果的对比表明,弱可压缩流计算模型能更精确地反映非自由边界热对流对气体密度分布的影响,进而反映流场对光束的影响。