On the Analysis of Power Law Fluid over a Diamond Shaped Cylindrical Surface with Screen Boundary Conditions at High Reynolds Number

Abstract:

This study analyses physical aspects of power-law fluid flow over a diamond shaped cylinder under the impact of a movable screen fixed in the middle of a channel keeping an aspect ratio as 0.5 with height of the channel. The perforated plate is a screen at the middle especially settled at orientation of π/6, π/4 or π/3 degrees. The Reynolds number (Re) has been kept in the range of 1000-10,000 with power-law index in the range 0.8-1.2. For the corresponding two-dimensional problem, the governing momentum equations coupled with energy equation have been solved numerically using non-isothermal laminar fluid flow interface in the software COMSOL Multiphysics 5.4. The dimensionless velocity magnitude and the non-dimensional temperature on the diamond shaped cylinder along the vertical non-dimensional length are expressed via fixing any two parameters from (Re), angle of screen θ and power-law index. The heat transfer coefficient, effective thermal conductivity and the Nusselt number are also expressed besides the dimonsionless length of the surface of the chosen cylinder. In conclusion, we will be going to suggest points to increase the dynamics and thermal variables with the use of selected parameters Re, θ, and power law index n.

• Periodical: Defect and Diffusion Forum (Volume 431)
• Pages: 163-175
• DOI: https://doi.org/10.4028/p-uDyqe2
• Online since: February 2024
• Authors: Abid Memon, M. Asif Memon, G. Shaikh, Adebowale Martins Obalalu*
• Keywords: CFD, Diamond Shaped Obstacle, Embedded Screen, Forced Convection, Power Law Model

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