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Investigation on the pressure drop during flow boiling of liquid nitrogen in a vertical tube
Author(s): 
Pages: 23-27
Year: Issue:  8
Journal: Cryogenics and Superconductivity

Keyword:  流动沸腾液氮两相流压降;
Abstract: 文中对竖直圆管内液氮流动沸腾压降进行实验研究,分析热流密度、质量流量对液氮两相流动摩擦压降的影响以及热流密度对测试段总压降的影响.在本实验工况范围内,两相流摩擦压降随着热流密度和质量流速的增加而变大,且测试段总压降随着热流密度的增加而降低.分别利用均相模型、L-M模型和Chisholm B系数模型对实验结果进行预测,并比较了预测值与实验值,结果表明本实验工况下均相模型预测效果最好.
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