Study on characteristics of vortex structures and irreversible losses in the centrifugal pump
Study on characteristics of vortex structures and irreversible losses in the centrifugal pump
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离心泵涡流结构特性及不可逆损失研究
DOI:
10.1177/0957650920983061
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发表时间:
2020-12
期刊:
影响因子:
--
通讯作者:
Lu Bohui
中科院分区:
文献类型:
--
作者:
Yuan Zhiyi;Zhang Yongxue;Wang Cong;Lu Bohui
The development of flow control methods in the centrifugal pump relies on further understanding of the characteristics of vortex structures and their irreversible losses. In this paper, the detached eddy simulation is conducted on a model centrifugal pump, which shows a good agreement with the experiment. Combining with three generations of vortex identification methods (vorticity, Q criterion, omega and Liutex methods) and entropy production analysis, the results show omega and Liutex methods are highly recommended to analyze the vortex structures. Vorticity is the key factor to promote the energy dissipation, and the irreversible losses of vortex areas can be lower than their surroundings when there exists smaller vorticity or higher rotation strength. Concerning the pressure pulsation induced by vortex shedding, it is unreasonable to analyze this unsteady process via vortex structures identified by iso-surface because of the restriction of the threshold. In comparison, the change of integral length is more related to the pressure pulsation.
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影响因子:
2.5
作者:
Yuning Zhang;Kaihua Liu;Jinwei Li;Haizhen Xian;Xiaoze Du
通讯作者:
Xiaoze Du
DOI:
10.1142/p219
发表时间:
2000-12
期刊:
--
影响因子:
--
作者:
Sheng-cai Li
通讯作者:
Sheng-cai Li
DOI:
10.1115/1.3650846
发表时间:
1965-12
期刊:
Journal of Basic Engineering
影响因子:
--
作者:
G. M. Wood;H. Welna;R. Lamers
通讯作者:
G. M. Wood;H. Welna;R. Lamers
DOI:
10.1016/j.ijheatfluidflow.2018.04.016
发表时间:
2018-08
影响因子:
2.6
作者:
Beomjun Kye;Keuntae Park;Haecheon Choi;Myungsung Lee;Joo-Han Kim
通讯作者:
Beomjun Kye;Keuntae Park;Haecheon Choi;Myungsung Lee;Joo-Han Kim
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