摘要
用数值模拟的方法将湍流流动的传热分为传热层流底层和湍流层 ,来考察传热层流底层中温度梯度矢量与速度夹角对湍流流动换热的影响 。
A numerical investigation of a 2D flow passage of which the whole domain is subdivided into a viscosity-affected laminar layer and a fully-turbulent layer is presented. The calculated results indicate that the angles between temperature gradient and velocity in the laminar layer influences heat transfer in the whole turbulent layer. They can enhance heat transfer, reduce heat transfer coefficient, or have no effect on it. Enhanced heat transfer on the coarse wall is analyzed with the Field-Synergy theory while water is in fully-developed turbulent flow.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2003年第8期1055-1058,共4页
CIESC Journal
基金
国家重点基础研究项目 (No G2 0 0 0 0 2 63 0 1)~~
关键词
数值分析
湍流流动
场协同
换热
Heat flux
Heat transfer
Heat transfer coefficients
Laminar flow
Numerical analysis
Velocity
Viscosity
