title: Velocity profiles in annular perfusion chamber measured by laser-Doppler velocimetry.
abstract: p6e fluid flow in the annular perfusion chamber of Baumgartner developed to study platelet vessel wall interaction was examined with laser-Doppler velocimetry. A laminar and stable flow with a Reynolds number of less than or equal to 50 was measured at flow rates up to 3 ml s-1. No turbulence was found. The wall shear rate directly determined from measured velocity profiles agreed well with theory. The experiments underlined the necessity to work with vessels of uniform thickness and a smooth surface.
mesh_terms: D001783:Blood Flow Velocity; D004301:Doppler Effect; D006801:Humans; D007834:Lasers; D008954:Models, Biological; D010973:Platelet Adhesiveness; D012212:Rheology