Study on the Critical Heat Flux Mechanism Model under the Condition of Low Velocity and Subcooled Boiling in the Narrow Channel

Ming Zhang; Tao Zhou; Ping Liu; Ke Ran; Cheng Sheng; Yan Ping Huang

doi:10.4028/www.scientific.net/AMM.130-134.3962

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 130-134Study on the Critical Heat Flux Mechanism Model...

Study on the Critical Heat Flux Mechanism Model under the Condition of Low Velocity and Subcooled Boiling in the Narrow Channel

Abstract:

Based on the bubble dynamics, the generation and separation of bubble plays a leading role in the heat transfer of boiling condition. Before the bubble separation, micro liquid layer below bubbles is evaporated to dryness and heat transfer deterioration is the ultimate cause of boiling crisis, proposed a critical heat flux mechanism in the conditions of low velocity and narrow channel. A critical heat flux mechanism model is established. By calculation, in the low mass flow range the mechanism model has a high precision to predict CHF in a larger pressure and export dry degree ranges. Using the model the relationship of parameters is studied.

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Periodical:

Applied Mechanics and Materials (Volumes 130-134)

Pages:

3962-3966

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.130-134.3962

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Online since:

October 2011

Authors:

Ming Zhang, Tao Zhou, Ping Liu, Ke Ran, Cheng Sheng, Yan Ping Huang

Keywords:

Bubble Dynamics, CHF, Low Velocity, Narrow Channels, Occurrence Mechanism

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References

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