Magnetohydrodynamics of unsteady viscous fluid on boundary layer past a sliced sphere

• Published in: Journal of physics. Conference series 2017-10, Vol.893 (1), p.12044
• Main Authors: Nursalim, Rahmat, Widodo, Basuki, Imron, Chairul
• Format: Article
• Language: English
• Subjects: Boundary layers; Continuity (mathematics); Flow characteristics; Fluid dynamics; Fluid flow; Incompressible flow; Magnetic properties; Magnetohydrodynamics; Mathematical models; Numerical methods; Parameters; Physics; Slicing; Stagnation point; Stream functions (fluids); Velocity; Velocity distribution; Viscous fluids
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/893/1/012044

Magnetohydrodynamics (MHD) is important study in engineering and industrial fields. By study on MHD, we can reach the fluid flow characteristics that can be used to minimize its negative effect to an object. In decades, MHD has been widely studied in various geometry forms and fluid types. The sliced sphere is a geometry form that has not been investigated. In this paper we study magnetohydrodynamics of unsteady viscous fluid on boundary layer past a sliced sphere. Assumed that the fluid is incompressible, there is no magnetic field, there is no electrical voltage, the sliced sphere is fix and there is no barrier around the object. In this paper we focus on velocity profile at stagnation point (x = 0°). Mathematical model is governed by continuity and momentum equation. It is converted to non-dimensional, stream function, and similarity equation. Solution of the mathematical model is obtained by using Keller-Box numerical method. By giving various of slicing angle and various of magnetic parameter we get the simulation results. The simulation results show that increasing the slicing angle causes the velocity profile be steeper. Also, increasing the value of magnetic parameter causes the velocity profile be steeper. On the large slicing angle there is no significant effect of magnetic parameter to velocity profile, and on the high the value of magnetic parameter there is no significant effect of slicing angle to velocity profile.