EFFECT OF COIL PITCH AND CROSS-SECTIONAL ELLIPTICITY ON RTD FOR DIFFUSION-FREE LAMINAR FLOW IN COILED TUBES

Abstract

The effect of coil pitch and the cross-sectional ellipticity on residence time distribution (RTD) for diffusion-free laminar flow in helically coiled tubes has been studied. The numerically computed RTDs reveal that the increase in the coil pitch broadens the RTD while the increase in the cross-sectional ellipticity narrows the RTD. The condition under which the effect of coil pitch on RTD can be ignored has been reported.