Abstract
In the present study, the flow structure such as the velocity profile and the wall shear stress in an asymmetrical arterial branch in laminar steady flow has been experimentally studied. In the branch model, the daughter tube asymmetrically bifurcates from the parent tube at 45°. The axial and the transverse velocity components have been measured by two-dimensional laser Doppler velocimetry, and the wall shear stress is measured by the electrochemical method. Furthermore, the wall shear stress estimated from the velocity profile is compared with that measured by the electrochemical method. Consequently, it has been clarified that, as it approaches the entrance of the daughter tube, the core flow deflects into the daughter tube, and the variation of wall shear stress along the proximal wall results from the secondary motion which is transferred from the parent tube to the daughter tube.
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