In-phase instabilities in BWR with sub-cooled boiling, direct heating, and spacers effects
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- 作者：José ; L. Muñ ; oz-Cobo ; jlcobos@iqn.upv.es" class="auth_mail" title="E-mail the corresponding author ; Alberto Escrivá ; Marí ; a-Dolores Domingo
- 关键词：In phase oscillations in BWR ; Sub-cooled boiling ; Direct gamma heating ; Non linear dynamics in boiling channels
- 刊名：Annals of Nuclear Energy
- 出版年：2016
- 出版时间：January 2016
- 年：2016
- 卷：87
- 期：part_P2
- 页码：671-686
- 全文大小：1366 K
文摘
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This paper provides a quantitative non-linear model for predicting in-phase oscillations in BWR.
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This model considers the single-phase, the subcooled boiling and the bulk boiling regions.
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The effect of the direct heating by neutrons and gammas, on the reactor stability is computed.
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The influence of the spacer location on the decay ratio and the limit cycle amplitude is studied.
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The effect of the void fraction oscillations on the mass flux oscillations in the two-phase nodes is considered.