• A COMPARATIVE STUDY OF UNSTEADY FLOW OF NON-NEWTONIAN FLUIDS THROUGH AN INCLINED STENOSED ARTERY

Dr. CHHAMA AWASTHI*

Abstract


This investigation accomplishes the comparison of different non-Newtonian fluids such as Bingham Plastic, Herschel Bulkley, and Casson fluid flowing through an inclined stenosed artery. Details of flow characteristics of Bingham Plastic, Casson fluids along with the body acceleration, slip condition at the stenosed wall and asymmetric stenosis effect have been discussed in this paper while Siddiqui and Chhama [10] data has been used for Herschel Bulkley fluid. A comparison of flow quantities like plug core velocity, plug core radius, axial velocity, and effective viscosity has been investigated under the various rheological factors such as yield stress, inclination, stenosis size effect, slip, and body acceleration for different non- Newtonian fluids. It has been found that the axial velocity of Herschel Bulkley fluid is greater than Casson fluid and lower than Bingham Plastic fluid in normal as well as in stenosed artery while in core region where yield stress is more than wall shear stress, plug core velocity of Bingham Plastic fluid is more than that of Casson fluid and less than that of Herschel Bulkley fluid.


Keywords


Blood, Bingham Plastic fluid, Casson fluid, Herschel Bulkley fluid, Stenosis, Plug core radius, Plug core velocity.

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