NUMERICAL STUDY ON TRANSIENT DYNAMICS IN A CENTRIFUGAL PUMP CONSIDERING CLEARANCE FLOW

被引：0
|
作者：
Jiang, Chen-xing [1 ]
Wang, Xi [1 ]
Kang, Na-Xin [1 ]
Zhang, Xiang-Yuan [1 ]
Shuai, Zhi-Jun [1 ]
Li, Wan-You [1 ]
机构：
[1] Harbin Engn Univ, Coll Power & Energy Engn, Harbin, Heilongjiang, Peoples R China
来源：
PROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER MEETING, 2018, VOL 3 | 2018年
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
IMPELLER; TONGUE; FORCES;
D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This paper investigates the transient flow characteristics and the forces on the impeller in a single-stage centrifugal pump considering the clearance flow. The finite volume method is employed to simulate the dynamics process. First, Numerical simulation is carried out in a commercial code CFX. The external performance characteristics, internal flow structure and pressure fluctuation in the two different models, with clearance and without clearance, are compared. It is found that the existence of the clearance flow can generate more vortex and hydraulic loss, which makes the flow state more complicated. Besides, the transient radial and axial forces on the impeller are analyzed. And an optimized model with modified chamber flow field is proposed, which can provide a theoretical foundation on the structure design of the centrifugal pump.
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页数：7
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