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Content available CFD-predicted rotordynamic characteristics of a high temperature sodium liquid seal
Wang Tong, Chen Pingwei, Ma Wensheng, Yu Guangbin
Journal of Theoretical and Applied Mechanics
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2022
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Vol. 60 nr 3
347--360
EN
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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