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Effect of Ramped Wall Temperature on Unsteady Mixed Convection Flow of Rotating Second Grade Fluid in Porous Medium

Ahmad Qushairi, Mohamad and Khan, Ilyas and Nor Athirah, Mohd Zin and Zulkhibri, Ismail and Sharidan, Shafie (2016) Effect of Ramped Wall Temperature on Unsteady Mixed Convection Flow of Rotating Second Grade Fluid in Porous Medium. In: Proceedings of the 6th IGCESH2016: International Graduate Conference on Engineering, Science and Humanities, 15-17 August 2016 , Universiti Teknologi Malaysia, Johor. pp. 415-417.. ISBN 978-967-0194-67-7

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Abstract

The effects of ramped wall temperature, rotation and porosity on mixed convection flow of incompressible second grade fluid are studied. The momentum equation is modelled in a problem of rotating fluid with constant angular velocity subjected to initial and oscillating boundary conditions. The energy equation is also introduced. Some suitable nondimensional variables are used to write equations into non-dimensional form. Laplace transform method is used to solve these equations in order to obtain the analytical solutions of velocity and temperature profiles. Computations are carried out and presented graphically to analyse the effect of second grade fluid parameter, rotation parameter, porosity parameter, Prandtl number and Grashof number on the profiles. It is found that, for larger values of porosity parameter, the fluid velocity will increase for both primary and secondary velocities. The results also show that, velocity and temperature for ramped wall temperature are lower compared to isothermal temperature. It is worth to mention that, the exact solutions obtained in this study can be used to check correctness of the results obtained through numerical schemes.

Item Type: Conference or Workshop Item (Lecture)
Uncontrolled Keywords: Mixed convection, Second grade fluid, Rotating, Ramped wall, Porous medium
Subjects: Q Science > QD Chemistry
Faculty/Division: Faculty of Industrial Sciences And Technology
Depositing User: Noorul Farina Arifin
Date Deposited: 13 Dec 2016 03:26
Last Modified: 14 Aug 2017 06:33
URI: http://umpir.ump.edu.my/id/eprint/15761
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