| 水轮机内部涡流与尾水管压力脉动相关性分析 | |
| 吴玉林 ; 吴晓晶 ; 刘树红 ; WU Yulin ; WU Xiaojing ; LIU Shuhong | |
| 2010-06-10 ; 2010-06-10 | |
| 关键词 | 流体机械 水轮机 尾水管 压力脉动 内部涡流 fluid machinery hydraulic turbine draft tube pressure fluctuation internal vortex flow TK730 |
| 其他题名 | Correlation analysis of the internal vortex flow of hydro turbine with the pressure fluctuation inside draft tube |
| 中文摘要 | 本文对三峡水轮机模型机组进行了全流道非定常湍流数值模拟,选择了2个活动导叶开度工况,分别计算不同流量下水轮机尾水管内的旋涡流动。计算结果能够明显显示尾水管涡带的形成和发展,及尾水管内各个记录面上的压力脉动和相应的旋涡转动周期有密切的关系;同时,还表示了旋涡沿流动方向的产生、发展和消失的过程,及其对于压力脉动的形成的影响作用。通过分析发现,形成涡带的旋涡运动是从上冠附近进入到尾水管的,类似于绕流体的脱体涡,说明对于上冠附近流场的研究有助于进一步探讨涡带运动形成机理和减小压力脉动措施。; A whole-passage unsteady turbulent numerical simulation to the model of ThreeGorge turbine with two guide angles is presented in this paper.The vortex motion and pressure fluctuation inside the draft tube are calculated.From the results,the formation and development of vortex rope inside the draft tube can be obtained.It can be seen that the pressure fluctuation is strongly related to the vortex periodic motion.From the results,it can also be obtained that the vortex is formed from the crown of the runner to draft tube,which is similar to the formation of detached vortex.It shows that the research on the flow distribution around crown can be used to study the principle of vortex rope and improvement for reducing pressure fluctuation.; 国家自然科学基金重点项目(90410019) |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/59484]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 吴玉林,吴晓晶,刘树红,等. 水轮机内部涡流与尾水管压力脉动相关性分析[J],2010, 2010. |
| APA | 吴玉林,吴晓晶,刘树红,WU Yulin,WU Xiaojing,&LIU Shuhong.(2010).水轮机内部涡流与尾水管压力脉动相关性分析.. |
| MLA | 吴玉林,et al."水轮机内部涡流与尾水管压力脉动相关性分析".(2010). |
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