Affiliation:
1. Department of Aerospace Engineering and Mechanics, Box 870280, The University of Alabama, Tuscaloosa, AL 35487-0280
Abstract
Fully developed laminar axial flow of yield-power-law fluids in eccentric annuli has been investigated numerically. The annuli may be fully open or partially blocked. General nonorthogonal, boundary-fitted curvilinear coordinates have been used to accurately model the irregular annular geometry due to the presence of a flow blockage. A computer code has been developed using a second-order finite-difference scheme. An exponential model for the shear stress, valid for both yielded and un-yielded regions of the flow, is used in the computation. The effects of pressure gradient, eccentricity, and blockage height on the flow rate have been studied and the results are presented. The flow rate is found to increase with increasing eccentricity for eccentric annuli without any blockage. For partially blocked eccentric annuli, the flow rate at a particular eccentricity decreases as the blockage height is increased.
Subject
Geochemistry and Petrology,Mechanical Engineering,Energy Engineering and Power Technology,Fuel Technology,Renewable Energy, Sustainability and the Environment
Reference19 articles.
1. Abdali
S. S.
, MitsoulisE., and MarkatosN. C., 1992, “Entry and Exit Flows of Bingham Fluids,” Journal of Rheology, Vol. 36, pp. 389–407.
2. Azouz
I.
, SiamackA. S., PilehvariA., and AzarJ. J., 1991, “Numerical Simulation of Laminar Flow of Power-Law Fluids in Conduits of Arbitrary Cross Section,” Recent Development in Non-Newtonian Flows and Industrial Applications, ASME FED-Vol. 124, pp. 73–79.
3. Azouz
I.
, SiamackA. S., PilehvariA., and AzarJ. J., 1993, “Numerical Simulation of Laminar Flow of Yield-Power-Law Fluids in Conduits of Arbitrary Cross Section,” ASME Journal of Fluids Engineering, Vol. 115, pp. 710–716.
4. Beverly
C. R.
, and TannerR. I., 1992, “Numerical Analysis of Three-Dimensional Bingham Plastic Flow,” Journal of Non-Newtonian Fluid Mechanics, Vol. 42, pp. 85–115.
5. Bird, R. B., Stewart, W. E., and Lightfoot, E. N., 1960, Transport Phenomena, John Wiley and Sons, New York, NY.
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