Tip leakage flow analysis of an axial turbine under the effect of separation at low Reynolds number
文献类型：期刊论文
| 作者 | Shao ZY2,3; Li W2,3; Zhu YL3; Wang X3; Zhang XH3 ; Chen HS2,3; Qin W(秦伟)1
|
| 刊名 | PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY
 |
| 出版日期 | 2019-10-23 |
| 页码 | 15 |
| 关键词 | Turbines turbomachinery flow turbomachinery aerodynamics turbine modeling |
| ISSN号 | 0957-6509 |
| DOI | 10.1177/0957650919882877 |
| 通讯作者 | Chen, Haisheng(chen_hs@mail.etp.ac.cn) |
| 英文摘要 | The tip clearance flow could lead to work reduction and loss generation in turbomachines. However, the effect of separation at low Reynolds number on leakage flow is seldom studied. The previous method for evaluating tip leakage characteristics should also be further researched. Thus, numerical investigations on the tip clearance flow in an unshrouded axial-inflow turbine are conducted at low Reynolds number (3.5 x 10(4) of the rotor outlet at the designed condition) in the present study. The flow patterns and leakage mass flow rate of the clearance have been analyzed in detail. It is found that the tip clearance flow is greatly affected by the flow separation caused by low Reynolds number. The scraping ratio adopted in previous references does not accord with the clearance flow characteristics at low Reynolds number, especially in the front part of the clearance. A coefficient by -0.70 power of the Reynolds number is proposed to modify the scraping ratio in the present study. The synergy between the velocity and the pressure gradient is innovatively employed to research the tip clearance flow characteristics, and it gives a reliable criterion of indicating the flow patterns in the tip clearance. |
| 分类号 | Q4 |
| WOS关键词 | PHYSICAL QUANTITY SYNERGY ; CLEARANCE FLOW ; HEAT-TRANSFER ; ROTOR ; BLADE ; FIELD ; PREDICTION ; TURBULENCE ; LOSSES |
| 资助项目 | National Key RD Plan[2017YFB0903602] ; National Natural Science Foundation of China[51522605] ; frontier science research project of CAS[QYZDB-SSW-JSC023] ; Newton Advanced Fellowship of the Royal Society[NA170093] |
| WOS研究方向 | Thermodynamics ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000492610800001 |
| 资助机构 | National Key RD Plan ; National Natural Science Foundation of China ; frontier science research project of CAS ; Newton Advanced Fellowship of the Royal Society |
| 其他责任者 | Chen, Haisheng |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/81415]  |
| 专题 | 力学研究所_职能与支撑部门 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mech, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing, Peoples R China; 3.Chinese Acad Sci, Inst Engn Thermophys, 11 4th Ring Rd, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Shao ZY,Li W,Zhu YL,et al. Tip leakage flow analysis of an axial turbine under the effect of separation at low Reynolds number[J]. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY,2019:15. |
| APA | Shao ZY.,Li W.,Zhu YL.,Wang X.,Zhang XH.,...&秦伟.(2019).Tip leakage flow analysis of an axial turbine under the effect of separation at low Reynolds number.PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY,15. |
| MLA | Shao ZY,et al."Tip leakage flow analysis of an axial turbine under the effect of separation at low Reynolds number".PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY (2019):15. |
入库方式： OAI收割
来源：力学研究所
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