膛内边界层数值模拟研究

NUMERICAL SIMULATION OF BOUNDARY LARYER FLOW IN GUN TUBE

建立了火炮膛内非定常、可压缩的湍流边界层微分方程数学模型 ,进行了以核心流为准两相流、边界层为湍流的气流传热和膛壁固壁传热的数值仿真 .与实验结果比较表明 ,本文所建立的模型能够很好地模拟火炮膛壁表面温度的变化规律 。

In this paper, the unsteady differen tial equation group of turbulent flow boundary layer in gun tube was established , and based on the model of quasi-two-phase core flow and turbulent boundary l ayer flow the heat transfer in gun tube was computed. Compared with experimental results it was proved that the model can simulate the distribution of temperatu re on gun tube. This paper will have a great significance on the gun tube life.