Abstract
Under the loss of heat sinks ATWS (anticipated transients without scram) accident of the PWR operation of nuclear heating reactors with natural circulation, the reactor is probably to enter a low quality two-phase flow density wave instability region and an oscillation of the power and flow rate can be induced because the decrease of core power lags behind the flow rate. This article explains this phenomenon and analyses its physical mechanism and effects of relevant parameters. Finally, it is noted that the oscillation could be avoided if negative temperature coefficient of moderator or core outlet subcooling is increased, or cross-section area of the riser is reduced.
Zuoyi, Zhang;
Zuying, Gao;
Jincai, Li;
Yansheng, Wang
[1]
- Qinghua Univ., Beijing, BJ (China). Inst. of Nuclear Energy Technology
Citation Formats
Zuoyi, Zhang, Zuying, Gao, Jincai, Li, and Yansheng, Wang.
A study of two-phase flow stability during the accident of PWR operation of nuclear heating reactors with natural circulation.
China: N. p.,
1992.
Web.
Zuoyi, Zhang, Zuying, Gao, Jincai, Li, & Yansheng, Wang.
A study of two-phase flow stability during the accident of PWR operation of nuclear heating reactors with natural circulation.
China.
Zuoyi, Zhang, Zuying, Gao, Jincai, Li, and Yansheng, Wang.
1992.
"A study of two-phase flow stability during the accident of PWR operation of nuclear heating reactors with natural circulation."
China.
@misc{etde_10145272,
title = {A study of two-phase flow stability during the accident of PWR operation of nuclear heating reactors with natural circulation}
author = {Zuoyi, Zhang, Zuying, Gao, Jincai, Li, and Yansheng, Wang}
abstractNote = {Under the loss of heat sinks ATWS (anticipated transients without scram) accident of the PWR operation of nuclear heating reactors with natural circulation, the reactor is probably to enter a low quality two-phase flow density wave instability region and an oscillation of the power and flow rate can be induced because the decrease of core power lags behind the flow rate. This article explains this phenomenon and analyses its physical mechanism and effects of relevant parameters. Finally, it is noted that the oscillation could be avoided if negative temperature coefficient of moderator or core outlet subcooling is increased, or cross-section area of the riser is reduced.}
place = {China}
year = {1992}
month = {May}
}
title = {A study of two-phase flow stability during the accident of PWR operation of nuclear heating reactors with natural circulation}
author = {Zuoyi, Zhang, Zuying, Gao, Jincai, Li, and Yansheng, Wang}
abstractNote = {Under the loss of heat sinks ATWS (anticipated transients without scram) accident of the PWR operation of nuclear heating reactors with natural circulation, the reactor is probably to enter a low quality two-phase flow density wave instability region and an oscillation of the power and flow rate can be induced because the decrease of core power lags behind the flow rate. This article explains this phenomenon and analyses its physical mechanism and effects of relevant parameters. Finally, it is noted that the oscillation could be avoided if negative temperature coefficient of moderator or core outlet subcooling is increased, or cross-section area of the riser is reduced.}
place = {China}
year = {1992}
month = {May}
}