MHD stagnation-point flow over a stretching/shrinking sheet in a micropolar fluid with a slip boundary

Siti Khuzaimah Soid, and Anuar Ishak, and Pop, Ioan (2018) MHD stagnation-point flow over a stretching/shrinking sheet in a micropolar fluid with a slip boundary. Sains Malaysiana, 47 (11). pp. 2907-2916. ISSN 0126-6039

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Abstract

The problem of stagnation point flow over a stretching/shrinking sheet immersed in a micropolar fluid is analyzed numerically. The governing partial differential equations are transformed into a system of ordinary (similarity) differential equation and are then solved numerically using the boundary value problem solver (bvp4c) in Matlab software. The effects of various parameters on the velocity and the angular velocity as well as the skin friction coefficient and the couple stress are shown in tables and graphs. The noticeable results are found that the micropolar and the slip parameters decrease the skin friction coefficient and the couple stress in the existence of magnetic field. Dual solutions appear for certain range of the shrinking strength. A stability analysis is performed to determine which one of the solutions is stable. Practical applications include polymer extrusion, where one deals with stretching of plastic sheets and in metallurgy that involves the cooling of continuous strips.

Item Type:Article
Keywords:Micropolar fluid; Stability analysis; Stagnation point flow; Stretching/shrinking
Journal:Sains Malaysiana
ID Code:12673
Deposited By: ms aida -
Deposited On:12 Mar 2019 07:32
Last Modified:17 Mar 2019 11:50

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