Quantitative assessment of steady and pulsatile flow fields in a parallel plate flow chamber

Steady and pulsatile flows were imaged and quantified in a parallel plate flow chamber that was designed to allow constant variation of the volumetric flow rare and to minimize pressure gradients across the width of the flow field. Results indicated that both the steady and pulsatile flow fields were uniform across the width of the how chamber as shown by linear regression analysis. Further, the dynamic effects of the fluid pulse were transmitted almost instantaneously across the length of the flow field. These findings verify that parallel plate devices designed in this manner are suitable for delivering uniform steady and pulsatile shear stress to adherent cell populations in vitro. (C) 1999 Biomedical Engineering Society. [S0090-6964(99)00103-4].