论文名称： Numerical Investigation of Developing Turbulent Flow in a Helical Square Duct with Large Curvature
作者： Gao Hui， Guo Liejin
来源出版物： Journal of Thermal Science
年卷期页： 2000,10(1):1-6
收录类型： 其他
论文简介： A fully elliptic numerical study has been carried out to investigate the three-dimensional turbulent developing flow in a helical square duct with large curvature.A two-layer zonal model is proposed and used,in which the whole region is divided into a viscosity-affected near wall layer and a fully turbulent region.A DSM closure is applied in the former,and a one-equation model is solved in the latter.The results presented in this paper cover a Reynolds number range of (1-10)×10^4.The development of flow is found to be dominated by radial pressure gradient and Dean-type secondary motion.The distribution of Reynolds stresses in fully developed flow exhibit a complex pattern of turbulence anisotropy.The development of peripherally averaged friction factor and the distribution of local friction factor in fully developed flow are given and discussed.
原文链接： Numerical Investigation of Developing Turbulent Flow in a Helical Square Duct with Large Curvature