Vplyv faktora tvaru priecneho prierezu obdížnikového kanála na rychlostne pole pri helikoidálnom prudení

摘要

A renormalization-group-based K-ε model of turbulence for fully developed turbulent flow of an incompressible viscous fluid in helical ducts of rectangular cross-section is used for numerical modeling of velocity distribution. The results of measured velocity distributions in helical ducts by Laser-Doppler Anemo-metry are presented. Both numerical and experimental data are compared. The influence of the shape factor of cross section h/b on the velocity fields in a stabilized flow is reviewed.