Abstract

The paper presents results of an experimental study of the effect of pin microstructures on the wetting front propagation and its structure under adiabatic conditions and on strongly pre-heated surfaces, as well as the heat transfer and critical heat fluxes under steady-state heat release with liquid nitrogen film flowing. The surface structuring was created by the deformational cutting method (DCM). Comparison with data obtained on a smooth heater is presented. It is shown that the microstructures created by the DCM may have a significant effect on the nature of the temperature curves, reducing the total time of plate cooling at rewetting up to 2 times, and significantly change the structure and dynamics of the wetting front under adiabatic conditions. At the same time, such microstructuring with preset parameters of microfinning has weak influence on the heat transfer under steady-state heat release. High-speed video data of the processes are presented.

中文翻译：

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液膜流到铜板上的变形切削结构对传热和瞬态冷却过程动力学的影响

摘要

本文介绍了在绝热条件下和强烈预热的表面上针微观结构对润湿锋面传播及其结构以及稳态热释放下传热和临界热通量的影响的实验研究结果。液氮膜流动。通过变形切割方法（DCM）创建表面结构。提出了与在光滑加热器上获得的数据的比较。结果表明，由DCM产生的微观结构可能对温度曲线的性质产生重大影响，减少了再润湿时板冷却的总时间达2倍，并且在绝热条件下显着改变了润湿前沿的结构和动力学。条件。与此同时，这种具有微细化预设参数的微结构对稳态热释放下的传热影响很小。呈现了过程的高速视频数据。