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首页> 外文期刊>Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics >Nucleate boiling of water from plain and structured surfaces
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Nucleate boiling of water from plain and structured surfaces

机译：平面和结构化表面上的水核沸腾

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Heat transfer from plain surface and from surfaces with distinct nucleation sites has been investigated under saturated pool boiling condition. Surfaces have been prepared with regular array of discrete nucleation sites formed by micro-drilling. Distilled water has been used as the boiling liquid. Out of various available correlations, Rolisenow correlation [W.M. Rohsenow, A method of correlating heat transfer data for surface boiling of liquids, Trans. ASME 74 (1952) 969-976] gives best agreement with the experimental data from plain surface at low degree of superheat. A mechanistic model also provides a good trend matching with the same experimental data. With the introduction of artificial nucleation sites substantial augmentation in heat transfer for distilled water compared to the plane surface has been noted. Continuous increase in nucleation site density increases the rate of heat transfer with a diminishing trend of enhancement. A correlation similar to that of Yamagata et al. [K. Yamagata, F. Hirano, K. Nishiwaka, H. Matsouka, Nucleate boiling of water on the horizontal heating surface, Mem. Fac. Eng. Kyushu 15 (1955) 98] has been developed to fit the experimental data of plane surface. Modification of the same correlation to take care of the nucleation site density has been developed and used to predict the experimental data from augmented surfaces. (c) 2006 Elsevier Inc. All rights reserved.
机译：在饱和池沸腾条件下，已经研究了从平整表面和具有不同成核位置的表面传热。已经制备了表面，该表面具有通过微钻孔形成的离散成核位置的规则阵列。蒸馏水已经用作沸腾液体。在各种可用的相关性中，Rolisenow相关性[W.M. Rohsenow，一种将传热数据与液体表面沸腾关联的方法，Trans。 ASME 74（1952）969-976]与低过热度下的平整表面实验数据给出了最佳一致性。机械模型也提供了与相同实验数据匹配的良好趋势。与平面相比，随着人工成核位点的引入，蒸馏水的传热有了实质性的提高。成核位点密度的连续增加增加了传热的速率，而增强的趋势却逐渐减小。与Yamagata等人的相关性相似。 [K. Yamagata，F.Hirano，K.Nishiwaka，H.Matsouka，水在水平加热面上的核沸腾，Mem。事实。九州15（1955）98]已经开发出来以适应平面的实验数据。为了照顾成核位点密度，已经开发了相同相关性的修改方法，并用于预测增强表面的实验数据。 （c）2006 Elsevier Inc.保留所有权利。

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