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.
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e-mail: qhussain@comec4.mh.ua.edu
e-mail: msharif@coe.eng.ua.edu
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September 1998
Technical Papers
Analysis of Yield-Power-Law Fluid Flow in Irregular Eccentric Annuli
Q. E. Hussain,
Q. E. Hussain
Department of Aerospace Engineering and Mechanics, Box 870280, The University of Alabama, Tuscaloosa, AL 35487-0280
e-mail: qhussain@comec4.mh.ua.edu
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M. A. R. Sharif
M. A. R. Sharif
Department of Aerospace Engineering and Mechanics, Box 870280, The University of Alabama, Tuscaloosa, AL 35487-0280
e-mail: msharif@coe.eng.ua.edu
Search for other works by this author on:
Q. E. Hussain
Department of Aerospace Engineering and Mechanics, Box 870280, The University of Alabama, Tuscaloosa, AL 35487-0280
e-mail: qhussain@comec4.mh.ua.edu
M. A. R. Sharif
Department of Aerospace Engineering and Mechanics, Box 870280, The University of Alabama, Tuscaloosa, AL 35487-0280
e-mail: msharif@coe.eng.ua.edu
J. Energy Resour. Technol. Sep 1998, 120(3): 201-207 (7 pages)
Published Online: September 1, 1998
Article history
Received:
November 2, 1996
Revised:
May 7, 1998
Online:
November 6, 2007
Citation
Hussain, Q. E., and Sharif, M. A. R. (September 1, 1998). "Analysis of Yield-Power-Law Fluid Flow in Irregular Eccentric Annuli." ASME. J. Energy Resour. Technol. September 1998; 120(3): 201–207. https://doi.org/10.1115/1.2795036
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