Abstract

The paper presents the results of an experimental study of the effect of 3D capillary-porous copper coatings with various geometries on the heat transfer rate and bubble dynamics during water pool boiling. The surfaces were modified via additive manufacturing (3D printing). It is shown that for the fabricated surfaces, the heat transfer enhancement is up to 2 times as compared with the reference bare surface. The highest degrees of the heat transfer enhancement are achieved for the coatings with the smallest wavelength of the structure modulation and channel width. High-speed video recording of boiling was also carried out, based on which the bubble departure diameters were analyzed for surfaces of various types.

中文翻译：

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使用 3D 打印的毛细管多孔涂层在池水沸腾过程中增强传热

摘要

本文介绍了不同几何形状的 3D 毛细孔铜涂层对水池沸腾过程中传热速率和气泡动力学影响的实验研究结果。通过增材制造（3D 打印）对表面进行了修改。结果表明，对于制造的表面，与参考裸表面相比，传热增强高达 2 倍。对于具有最小结构调制波长和通道宽度的涂层，实现了最高程度的传热增强。还进行了沸腾的高速视频记录，在此基础上分析了各种表面的气泡离开直径。