PIV measurement of flow in human bronchus attached bent pipe

Abstract

This paper describes the intra-thoracic flow. Dean vortices are generated by the larynx and upper respiratory tract. Dean vortices are generated by a bent pipe that simulates the larynx and upper respiratory tract. This bent pipe is attached to the human bronchus model. In this paper, velocity profiles in the human bronchus model are examined experimentally by particle image velocimetry (PIV). Dean number was changed by curvature radius of bent pipes. As a result, the flow separation occurred on the wall surfaces on both sides of the first branch. However, the flow separation was restrained when Dean number was raised.