中文摘要：

推导了守恒元与求解元（CE／SE）方法的计算格式，用于对几种不同填充系数的脉冲爆震发动机内流场进行计算，发现CE／SE方法是一种较好的爆震波模拟方法，能够有效地捕获爆震波等强间断。计算结果表明：填充系数对脉冲爆震发动机性能影响较大，填充系数越大，产生的平均推力就越大、比冲越大；减小填充系数可以增加燃料的效率。计算结果对改进或优化脉冲爆震发动机性能具有一定的参考价值。

英文摘要：

The numerical method of the space-time conservation element and solution element （ CE/ SE） is deduced to simulate the interior flow of pulse detonation engine （PDE） with different filling coefficients. It shows that the CE/SE method is a preferable simulation way to capture the detonation wave efficiently. The calculation results show that the filling coefficients have great effects on PDE performance. As filling coefficients are increased, the average thrust becomes higher, and the impulse gets higher. Decreasing filling coefficients can increase fuel efficiency. All these results help to improve the PDE performance.