A numerical study for off-centered stagnation flow towards a rotating disc

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Abstract

In this investigation, a semi-numerical method based on Bernstein polynomials for solving off-centered stagnation flow towards a rotating disc is introduced. This method expands the desired solutions in terms of a set of Bernstein polynomials over a closed interval and then makes use of the tau method to determine the expansion coefficients to construct approximate solutions. This method can satisfy boundary conditions at infinity. The properties of Bernstein polynomials are presented and are utilized to reduce the solution of governing nonlinear equations and their associated boundary conditions to the solution of algebraic equations. Graphical results are presented to investigate the influence of the rotation ratio α on the radial velocity, azimuthal velocity and the induced velocities. A comparative study with the previous results of viscous fluid flow in the literature is made.

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Heydari, M., Loghmani, G. B., Rashidi, M. M., & Hosseini, S. M. (2015). A numerical study for off-centered stagnation flow towards a rotating disc. Propulsion and Power Research, 4(3), 169–178. https://doi.org/10.1016/j.jppr.2015.07.004

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