Investigations of energy distribution and loss characterization in a centrifugal impeller through PIV experiment
Investigations of energy distribution and loss characterization in a centrifugal impeller through PIV experiment
复制标题
通过 PIV 实验研究离心叶轮的能量分布和损失特性
DOI:
10.1016/j.oceaneng.2022.110773
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发表时间:
2022-03
影响因子:
5
通讯作者:
Zuchao Zhu
中科院分区:
文献类型:
--
作者:
Bo Chen;Xiaojun Li;Zuchao Zhu
The objective of this study is to explore a method that can describe the loss distribution trend of flow field directly through the PIV experiment. Three main concepts, namely Local pressure head increase (Hpr), Local velocity head increase (Hvr) and Local pump degree of reaction (λ), are proposed to characterise the energy distribution in the impeller. Results show the distribution ofHpris affected mainly by the inlet flow field of the impeller passage, while the maximum value region ofHvralong the radial direction is located at the downstream of the unstable region on the blade suction side and in the center of the unstable region in the pressure side. These distributions are due to the local increase of absolute velocity (C) caused by vortex motion. The large vortex is dispersed along the suction side of the impeller blade, causing the energy losses to become more obvious than in the pressure side. The developing trends of the pump efficiency and passage-averagedλas the flow rate increased are consistent. Consequently, the distribution of loss intensity in the flow field can be quantitatively reflected byλ.
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影响因子:
5
作者:
Xiao Wenyang;Tan Lei
通讯作者:
Tan Lei
DOI:
10.1177/0957650916663326
发表时间:
2016-08
期刊:
J Power and Energy
影响因子:
--
作者:
李晓俊;朱祖超;李昳;陈小平
通讯作者:
陈小平
DOI:
10.1016/j.icheatmasstransfer.2020.104526
发表时间:
2020-04-01
影响因子:
7
作者:
Zhang, Fan;Appiah, Desmond;Wei, Xueyuan
通讯作者:
Wei, Xueyuan
影响因子:
2.4
作者:
J. Keller;E. Blanco;R. Barrio;J. Parrondo
通讯作者:
J. Keller;E. Blanco;R. Barrio;J. Parrondo
影响因子:
7.2
作者:
Li Xiaojun;Shen Tangjun;Li Pengcheng;Guo Xiaomei;Zhu Zuchao
通讯作者:
Zhu Zuchao