Effects of Nucleation Site Spacing on Bubble Merger Characteristics during Subcooled Boiling

Bi Jingliang; KE Daoyou; Xu Jianjun; Huang Yanping; Zan Yuanfeng

doi:10.13832/j.jnpe.2017.02.0046

Volume 38 Issue 2

Feb. 2025

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Bi Jingliang, KE Daoyou, Xu Jianjun, Huang Yanping, Zan Yuanfeng. Effects of Nucleation Site Spacing on Bubble Merger Characteristics during Subcooled Boiling[J]. Nuclear Power Engineering, 2017, 38(2): 46-50. doi: 10.13832/j.jnpe.2017.02.0046

Citation:

Bi Jingliang, KE Daoyou, Xu Jianjun, Huang Yanping, Zan Yuanfeng. Effects of Nucleation Site Spacing on Bubble Merger Characteristics during Subcooled Boiling[J]. Nuclear Power Engineering, 2017, 38(2): 46-50. doi: 10.13832/j.jnpe.2017.02.0046

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Effects of Nucleation Site Spacing on Bubble Merger Characteristics during Subcooled Boiling

doi: 10.13832/j.jnpe.2017.02.0046

1. CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu, 610213, China;
2. Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing, 100084, China

Received Date: 2016-05-18
Rev Recd Date: 2016-12-26

Available Online: 2025-02-09

Abstract

Abstract

Subcooled boiling is an important phenomenon during the thermal hydraulics process in nuclear reactors.Bubble merger is a common form of bubble interactions.This paper studies bubble merger characteristics and heat flux distributions at various nucleation site spacing.A microheater array is used to control the nucleation site spacing and measure the heat fluxes in detail.A CCD camera measures the bubble dynamics from bottom view.The correlations of bubble dynamics and heat flux distributions under bubbles are analyzed and the effects of nucleation site spacing are summarized.
- Nucleation site spacing,
- Subcooled boiling,
- Bubble merger