DEVELOPING PULSATING SMALL-AMPLITUDE LAMINAR FLOW IN A RECTANGULAR CHANNEL

The method of numerical simulation of the hydrodynamics of a developing steady-state pulsating small-amplitude laminar fl ow of an incompressible Newtonian liquid in a rectangular microchannel is presented based on the boundary-layer theory. The simulation was carried out for fl ow with Re = 100–2000. Distributions of the coeffi cients of hydraulic resistance and of skin friction of fl ow along the channel length are obtained. Conclusions are drawn on the length of the initial hydrodynamic segment and on the changes in the amplitude and phase of vibrations of the hydraulic resistance and skin friction coeffi cients and of longitudinal velocity. The distribution of the shear stress, as well as of its amplitude and phase over the channel perimeter, has been determined.
   
Author:  M. S. Purdin
Keywords:  hydrodynamics, pulsations, rectangular channel, developing laminar fl ow
Page:  1266