中国计量学院学报2011，Vol.22Issue(1)：6-10,5.
射流冲击凸台时传热与流动的数值模拟研究
A numerical study on the heat transfer and flow of impinging jet on a pedestal
洪飞飞 1周静伟1
作者信息
- 1. 中国计量学院,计量测试工程学院,浙江,杭州,310018
- 折叠
摘要
Abstract
A pedestal mounted on a flat plate was usually used to resemble the configuration of electronic components in numerical study of jet impingement.The RNG κ-ε model was used to compute the heat transfer and flow field of a semi-confined turbulent axisymmetric jet, impinging onto a pedestal mounted on a flat plate.Heat transfer characteristics were investigated on the pedestal top and side face, as well as on the plate.The influence of Reynolds number and nozzle-to-pedestal distance on heat transfer and flow was studied.It showed that at a shorter impinging distance the Nusselt number on the pedestal's top surface decreases firstly from the stagnation point and then increases slightly.It was near the pedestal corner that the heat transfer coefficient has a maximum.The simulation results present the complex features like separation and reattachment on the plate which strongly influence the wall temperature distribution and heat transfer coefficient.关键词
冲击射流/凸台/传热与流动/RNG的κ-ε模型Key words
impinging jet/ pedestal/ heat transfer and flow/ RNG κ-ε mode分类
能源与动力引用本文复制引用
洪飞飞,周静伟..射流冲击凸台时传热与流动的数值模拟研究[J].中国计量学院学报,2011,22(1):6-10,5.
