文章基本信息

标题：Multiple Jet Impingement in Reflow Soldering -a Numerical Approach
本地全文：下载
作者：Flavia V. Barbosa ; Joao P. V. Silva ; Senhorinha F. C. F. Teixeira 等
期刊名称：Lecture Notes in Engineering and Computer Science
印刷版ISSN：2078-0958
电子版ISSN：2078-0966
出版年度：2018
卷号：2235&2236
页码：557-562
出版社：Newswood and International Association of Engineers
摘要：Multiple jet impingement is a technology widely implemented in the reflow soldering process. Forced convection through jet impingement allows high average heat transfer coefficients and increases the uniformity of the heat transfer over the target surface. These characteristics are required to enhance the process and to avoid local hot (or cold) spots. To reduce products defects, all the variables identified in reflow soldering need to be controlled. Generating such data from experimentation is quite demanding in terms of planning, facilities and cost of experimentation. In that sense, to improve the industrial process and to reduce time and costs, the introduction of the computational simulation plays an important role. Considering the relevance of this area for the industry, this paper presents the numerical modeling of multiple jets impinging on a target surface using the SST k-ω model, considered by recent authors as the most appropriate turbulence model for jet impingement simulation. Through the CFD study, it is possible to analyze the flow behavior of the jets but also the variation of the surface temperature with time. Results revealed an accurate simulation of the jets flow field from the nozzle plate to the target surface. The jet-to-jet and jet-to-plate interactions were clearly identified, proving that the variables identified in a multiple jet system need to be cautiously analyzed since they interfere with the performance of the heat transfer over the target surface.
关键词：Jet impingement; reflow soldering; heat transfer; numerical simulation;