摘要
为了获得SK型静态混合器的传热性能,将不可压缩流体在静态混合器中的螺旋形运动分解成直线运动和旋转运动,依据普兰特-台劳模型运用传热学的理论分别求解两种运动湍流情况下的传热效率,进行叠加后得到SK型静态混合器湍流时努塞尔特准数理论计算式,再考虑到推导过程中的各种近似而用修正系数加以修正。以水为实验介质对SK型静态混合管的传热性能进行了实验测量,在一定的雷诺准数和普兰特准数范围内测得努塞尔特准数理论计算式的修正系数。
In order to obtain the heat-transfer performance in the SK static mixer, the spiral motion of the incompressible fluid in the mixer was decomposed into a linear motion plus a revolution motion; and the heat-transfer efficiency under turbulent condition for each of these two motions was calculated by the Prandtl-Taylor model and heat-transfer theory, respectively. These two efficiencies were superposed to get the theoretical formula for the Nu number of SK static mixer under turbulent conditions. A correctio...
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2008年第3期384-388,共5页
Journal of Chemical Engineering of Chinese Universities
基金
国家十五科技攻关项目(2004BA319B1)
关键词
静态混合器
湍流
传热
运动分解
static mixer
turbulence
heat-transfer
motion decomposition
