An alternative solution is proposed for the oscillatory Ekman boundary layer flow bounded by two parallel plates in relative motion (Muzumder, 1991). The solution brings out among other things, the phenomenon of resonance which is of importance in rotating systems.
This paper reports an analytical study of the creeping flow past a solid sphere in an unbounded sparsely‐packed porous medium assuming the validity of the Brinkman model. A closed form solution is obtained for the flow field and streamlines are drawn to demonstrate its evolution. No separation flow occurs near the rear stagnation point. In the case of low permeability media, there is an overshoot in the tangential component of velocity in the vicinity of the sphere and the total drag on the sphere is found to increase with a decrease in the value of the permeability parameter. Heat transfer due to this forced convection has been exemplified.
The dispersion coefficient, the time delay and the time constant, as parameters associated with models of liquid phase axial dispersion in fluidized systems, have been correlated using available literature data for fluidization involving a wide range of fluid and particle properties. The results permit prediction of these parameters from only a knowledge of the bed voidage. A comparison with Chung and Wen's1 correlation demonstrates the superiority of the present correlation.
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