Numerical simulation of turbulent flows under a plane rate of strain condition in a rotating 90 .deg. curved duct

The effect of curvature, rotation, variable cross-section can make very complex flow pattern in turbo-machinery such as pumps, compressors, turbines. In this study of turbulent flow characteristics, rotating 90 .deg. curved duct under a plane rate of strain condition is computationally analyzed. The objective of this study is to understand the complex turbulent flow phenomena in turbo-machinery passage by analyzing the modeled rotating 90 .deg. curved duct flow. RSM(Reynolds Stress Model) was employed for the turbulence modeling of Reynolds stress in momentum equations proposed by Shin(1995). The three dimensional computational code which adopts RSM for turbulence modeling was newly developed for the generalized curvilinear coordinate