Investigation on Reversed Flow Characteristics of U-Tube Steam Generator under Ocean Conditions

He Gening; Li Xiaojia; Cong Tenglong; Chen Yiran; Li Donghui; Wu Ge

doi:10.13832/j.jnpe.2021.03.0037

Volume 42 Issue 3

Jun. 2021

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He Gening, Li Xiaojia, Cong Tenglong, Chen Yiran, Li Donghui, Wu Ge. Investigation on Reversed Flow Characteristics of U-Tube Steam Generator under Ocean Conditions[J]. Nuclear Power Engineering, 2021, 42(3): 37-42. doi: 10.13832/j.jnpe.2021.03.0037

Citation:

He Gening, Li Xiaojia, Cong Tenglong, Chen Yiran, Li Donghui, Wu Ge. Investigation on Reversed Flow Characteristics of U-Tube Steam Generator under Ocean Conditions[J]. Nuclear Power Engineering, 2021, 42(3): 37-42. doi: 10.13832/j.jnpe.2021.03.0037

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Investigation on Reversed Flow Characteristics of U-Tube Steam Generator under Ocean Conditions

doi: 10.13832/j.jnpe.2021.03.0037

Publish Date: 2021-06-15

Abstract

Abstract

Based on RELAP5 program, a dynamic simulation model of U-tube steam generator (SG) under typical ocean conditions is established and verified. In the reactor start-up period, the effect of different rolling conditions on the flow in the U-tube of SG under low flow forced cycle condition is studied. The results show that the reversed flow can be suppressed by delaying the introduction of ocean conditions. It is easier to reverse flow under rolling motion condition around the axis that parallel to the axis of SG tube bundle elbow.
- Steam generator (SG),
- Forced circulation,
- Thermalhydraulics,
- Flow instability