Numerical investigations of the energy performance and pressure fluctuations for a waterjet pump in a non-uniform inflow
文献类型：期刊论文
| 作者 | Luo XW2; Ye WX2; Huang RF(黄仁芳)1; Wang YW(王一伟)1 ; Du TZ(杜特专)1; Huang CG(黄晨光)1
|
| 刊名 | RENEWABLE ENERGY
 |
| 出版日期 | 2020-06-01 |
| 卷号 | 153页码:1042-1052 |
| 关键词 | Waterjet pump Energy performance Pressure fluctuation Numerical simulation |
| ISSN号 | 0960-1481 |
| DOI | 10.1016/j.renene.2020.02.081 |
| 通讯作者 | Huang, Renfang(hrenfang@yeah.net) |
| 英文摘要 | As a way of exploitation and utilization of ocean energy, the waterjet pump is used in a wide range of high-speed marine vessels over 30 knot. This paper aims to investigate the mechanism of the energy loss and pressure fluctuations caused by the non-uniform inflow for a waterjet pump. Unsteady internal flows inside the waterjet pump are simulated using the Reynolds-averaged Navier-Stokes equations with the SST k-omega turbulence model. The predicted pump head and efficiency are in reasonable accordance with the experimental data. The inflow non-uniformity would decrease the hydraulic head, efficiency and increase the axial force fluctuations in the impeller, causing large pulsations in the unsteady energy performance. Based on analyses of the energy loss, the turbulent kinetic energy production and the diffusion of the Reynolds stress are major sources of the energy loss in the waterjet pump. The non-uniform inflow induces a dramatic energy loss in the intake duct and diffuser with an apparent flow separation observed near the trailing edge of the diffuser blade. Due to the inflow non-uniformity, the pressure fluctuates violently at the impeller rotating frequency (f(n)) in the intake duct, impeller and near the diffuser inlet, but a dominant frequency of 2f(n), is generated by the unsteady flow separation near the diffuser outlet. (C) 2020 Elsevier Ltd. All rights reserved. |
| 分类号 | 二类/Q1 |
| WOS关键词 | TURBULENCE MODELS ; FLOW PUMP ; SIMULATION ; TURBINE ; DYNAMICS ; EQUATION |
| 资助项目 | National Key R&D Program of China[2018YFB0606101] ; National Natural Science Foundation of China[51536008] ; National Natural Science Foundation of China[11772340] ; National Natural Science Foundation of China[11672315] ; Beijing Natural Science Foundation[3182014] ; Tsinghua National Laboratory for Information Science and Technology ; Science and Technology onWater Jet Propulsion Laboratory[6142223190101] |
| WOS研究方向 | Science & Technology - Other Topics ; Energy & Fuels |
| 语种 | 英语 |
| WOS记录号 | WOS:000536952200085 |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; Beijing Natural Science Foundation ; Tsinghua National Laboratory for Information Science and Technology ; Science and Technology onWater Jet Propulsion Laboratory |
| 其他责任者 | Huang, Renfang |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/82113]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | 1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China 2.Tsinghua Univ, Dept Energy & Power Engn, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Luo XW,Ye WX,Huang RF,et al. Numerical investigations of the energy performance and pressure fluctuations for a waterjet pump in a non-uniform inflow[J]. RENEWABLE ENERGY,2020,153:1042-1052. |
| APA | Luo XW,Ye WX,黄仁芳,王一伟,杜特专,&黄晨光.(2020).Numerical investigations of the energy performance and pressure fluctuations for a waterjet pump in a non-uniform inflow.RENEWABLE ENERGY,153,1042-1052. |
| MLA | Luo XW,et al."Numerical investigations of the energy performance and pressure fluctuations for a waterjet pump in a non-uniform inflow".RENEWABLE ENERGY 153(2020):1042-1052. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。