EXPERIMENTAL STUDY ON TURBULENT FEATURES IN THE NEGATIVE TRANSPORT REGION OF ASYMMETRIC PLANE CHANNEL FLOW

【摘要】 <正> Turbulent features of streamwise and vertical components of velocityin the negative transport region of asymmetric plane channel flow have been studiedexperimentally in details.Experiments show that turbulent fluctuations in negativetransport region are suppressed,and their probability distributions are far from Gaus-sian.Besides,the skewness factors attain their negative maxima at the position of themaximum mean velocity,whereas the flatness factors attain their positive maxima atthe same position.更多还原

【Abstract】 Turbulent features of streamwise and vertical components of velocity in the negative transport region of asymmetric plane channel flow have been studied experimentally in details.Experiments show that turbulent fluctuations in negative transport region are suppressed,and their probability distributions are far from Gaus- sian.Besides,the skewness factors attain their negative maxima at the position of the maximum mean velocity,whereas the flatness factors attain their positive maxima at the same position.更多还原