该文介绍了针对直孔活塞式３７ｍｍＲＬＰＧ再生喷射燃烧过程进行实验测量和数值模拟研究所取得的结果及其分析。数值模拟中重点考虑了４种雾化和燃烧模型对模拟上述燃烧过程的适用性，它们是瞬态燃烧模型、单液滴模型、喷射雾化模型及雾化直径的燃烧室压力函数模型。发现瞬态燃烧模型和喷射雾化模型分别过高和过低地预测了着火后的压力升高率，压力函数模型预测的弹丸速度较小，而单液滴模型则既能较好地描述压力—时间历程，又能精确地预测弹丸炮口速度 This paper presents the results and analysis of the experimental measurements and numerical simulations of the straight-bore piston-type 37mmRLPG regenerative injection combustion process. In the numerical simulation, the applicability of four kinds of atomization and combustion models to simulate the above combustion process are considered. They are transient combustion model, single drop model, spray atomization model and atomization diameter combustion chamber pressure function model. It is found that the rate of pressure rise after ignition is predicted by the transient combustion model and the spray atomization model respectively. The pressure function model predicts a small projectile velocity, while the single droplet model can not only describe the pressure- Time history, but also accurately predict the projectile muzzle velocity