Flow Structure and Transition to Local Turbulence Downstream of an Asymmetric Narrowing that Imitates Arterial Stenosis

Abstract The results of experimental studies and numerical simulation the flow structure in separation region downstream an asymmetric narrowing smooth canal that simulates 70% one-sided stenosis artery are presented. Reynolds number was equal to 1800. instantaneous velocity vector fields were measured using SIV technique. solution obtained by large eddy (LES) method. Setting disturbances close conditions made it possible obtain a satisfactory agreement between calculated components stress tensor. data on formation local turbulence behind constriction subsequent relaminarization obtained. It is shown pair secondary eddies localized within formed near throat constriction.