| 引用本文: | 赵文涛,周进,聂万胜,等.非线性高频振荡燃烧的研究.[J].国防科技大学学报,1998,20(1):9-13.[点击复制] |
| Zhao Wentao,Zhou Jin,Nie Wansheng,et al.Study on Nonlinear High Frequency Acoustic Oscillation Combustion[J].Journal of National University of Defense Technology,1998,20(1):9-13[点击复制] |
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| 非线性高频振荡燃烧的研究 |
| 赵文涛1, 周进1, 聂万胜2, 庄逢辰2 |
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(1.国防科技大学 航天技术系 湖南 长沙 410073;2.国防科工委指挥技术学院 北京 101407)
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| 摘要: |
| 用数值模拟的方法研究了液体火箭发动机高频振荡燃烧的形成和发展过程。气相控制方程用欧拉坐标系下的 Navier-Stokes 方程组描述，液相控制方程在 Lagrangian 坐标系下描述，并采用高压蒸发燃烧模型。从计算的结果可以看出，当燃烧室内发生高频振荡燃烧时，在喷注面附近和燃烧室收敛段这两个区域内压力的波动幅度较大；通过对压力、混合气体温度及速度在振荡燃烧情况下的比较，得出了振荡燃烧发生时发动机内部两相流场的脉动频率与燃烧室固有频率相耦合的结论。 |
| 关键词: 非线性，燃烧，高频振荡，液体火箭发动机 |
| DOI： |
| 投稿日期：1996-12-11 |
| 基金项目: |
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| Study on Nonlinear High Frequency Acoustic Oscillation Combustion |
| Zhao Wentao1, Zhou Jin1, Nie Wansheng2, Zhuang Fengchen2 |
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(1.Department of Astronautics Technology，NUDT，Changsha，410073;2.Institute of Command Technology COSTIND，Beijing，101407)
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| Abstract: |
| The forming and developing processes of high frequency acoustic combustion are studied with the method of computational modeling in this paper. The gas governing equations are described under the Euler coordinate，and the liquid phase governing equations are described under the Lagrangian coordinate. The high pressure combustion model is adopted. It is observed that the pressure oscillations near chamber head and convergence is greater than others when there is high frequency combustion instability in the chamber. After comparing the pressure，the temperature and velocity of the mixed gas under the condition of unstable combustion，the conclusion is drawn that the oscillation frequencies in two phase flow and combustor are the same when acoustic combustion occurs. |
| Keywords: nonlinear,combustion,high frequency acoustic oscillation,liquid rocket engine |
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