| 导流板对腔口流体自持振荡影响的研究 |
| |
| 引用本文： | 张明敏,何祚镛.导流板对腔口流体自持振荡影响的研究[J].应用力学学报,1995(2). |
| |
| 作者姓名： | 张明敏 何祚镛 |
| |
| 作者单位： | 哈尔滨船舶工程学院 |
| |
| 摘 要： | 腔口流体动力自持振荡的频率和导流板的长度有一定关系。本文通过对跨越腔口非稳定层和自持振荡的理论分析，并通过对不同长度导流板的腔、低速流激自持振荡均方压力谱分析的实验研究，给出流激自持振荡的频率与导流板长度之间的关系。流体动力振荡和腔的声驻波共振耦合时，腔内振荡的均方压力达到最大值。根据流速变化时，均方压力谱峰值频率的偏移，分析了导流板长度对流引起的流一腔系统耦合共振的影响。
|
| 关 键 词： | 自持振荡 流体动力振荡 流激振荡 腔的共振 |
The Influence of the Flange of Cavity on the FluidDynamic Self-sustained Oscillations |
| |
| Zhang Mingmin,He Zuoyong.The Influence of the Flange of Cavity on the FluidDynamic Self-sustained Oscillations[J].Chinese Journal of Applied Mechanics,1995(2). |
| |
| Authors: | Zhang Mingmin He Zuoyong |
| |
| Institution: | Harbin Shipbuilding Engineering Institute |
| |
| Abstract: | The frequency of fluid dynamic self-sustained oscillation of a cavity is related to the length offlange of cavity.By the theoretical analysis for the unstable shear layer over the opening of cavity andits selfsustained cocillation and by the spectrum analysis of experimental measurements of RMS pres-sure of the selfsustained oscillation of cavities with different length of flanges, the relation betweenthe frequency of the self-sustained osillation and the length of flange is given in this paper.The RMS of pressure in the cavity may be reached to its maximum when the fluid dynamic oscil-lation is coupling with standing wave resonance of the cavity. According to the measured deviation ofthe lieak of RMS pressure spectrum as the speed of flow is changing,the influence of the lensth offlange of cavity on the coupling resonance of fluid-cavity system induced by flow is analysed. |
| |
| Keywords: | self-sustained oscillation fluid dynamic oscillation flow-induced oscillation cavity resonance |
| 本文献已被 CNKI 等数据库收录！ |
