Computational fluid dynamics analysis of flammable refrigerant leakage through a microcrack

Shaozhi Zhang,Guangming Chen,Zetian Li,Jiahao Fang

International Journal of Refrigeration（2022）

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摘要

•The morphology of leak sources is modeled as narrow crack rather than point.•A model is built with crack of displacement(COD)ranging from 10 µm to 50 µm.•Smaller infinity discharge coefficient value is obtained when COD < 30 µm.•Equations for discharge coefficient are proposed for R290, R32, and R1234yf.

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关键词

Computational fluid dynamics,Discharge coefficient,Reynolds number,Flammable refrigerant leakage,Length-to-diameter-Ratio,Orifice-to-pipe-Diameter Ratio

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