ARTICLE
CFD-predicted rotordynamic characteristics of a high temperature sodium liquid seal
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1
School of Mechanical and Powder Engineering, Harbin University of Science and Technology, Harbin, China
2
Chongqing Pump Industry, Chongqing, China
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Harbin Engineering University, Harbin, China
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Harbin Institute of Technology, Harbin, China
CORRESPONDING AUTHOR
Pingwei Chen   

School of Mechanical and Powder Engineering, Harbin University of Science and Technology, 150080, Harbin, China
Submission date: 2022-03-18
Final revision date: 2022-05-05
Acceptance date: 2022-05-08
Online publication date: 2022-06-10
Publication date: 2022-07-30
 
Journal of Theoretical and Applied Mechanics 2022;60(3):347–360
 
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ABSTRACT
Rotordynamic characteristics of a high temperature sodium liquid (HTSL) seal were studied in this paper by using CFD software. Compared with the water liquid seal, the HTSL seal has a larger leakage flow rate and a lower drag power loss. The HTSL seal has a larger direct stiffness coefficient and the effective stiffness coefficient Keff is also larger than the water liquid seal, which means the HTSL seal has a better stiffness capacity. The HTSL seal possesses a positive effective damping coefficient Ceff in the whole whirling frequency range, which means better stability for the rotor system especially in high rotor speeds.
 
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