Open AccessDarcy–Brinkman–Forchheimer flow over irregular domain using finite elements method
Author(s) -
K. Murali,
V. Kesavulu Naidu,
B. Venkatesh
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/577/1/012158
Subject(s) - finite element method , computation , linearization , inertia , flow (mathematics) , mathematics , numerical analysis , boundary value problem , mathematical analysis , mechanics , geometry , nonlinear system , algorithm , physics , structural engineering , classical mechanics , engineering , quantum mechanics
The finite element method of solution with curved triangles to solve the three-dimensional, fully-developed Darcy–Brinkman–Forchheimer flow equation in channel with curved side is solved using quasi-linearization and Gauss-Seidel iteration method. Exhaustive numerical computation and numerical experimentation reveals the parameters’ influence on the velocity distributions.. A salient feature of the method adopted in the present paper is that it ensures that the errors are almost equally distributed among all the nodes. It is found that the irregular cross-section channel with upward concave boundary decelerates the flow. Numerical experimentation involved different order curved triangular elements and extensive computation revealed that the quintic order curved triangular element yields the desired solution to an accuracy of 10 −5 . The finite element method is found to be very effective in capturing boundary and inertia effects in the three-dimensional, fully-developed flow through porous media. Further, it succeeds in giving the required solution for large values of Forchheimer number when shooting method fails to do so. The method can be easily employed in any other irregular cross-section channel.