@Article{IJNAM-11-2, author = {J., Gaspar, F. and Rodrigo, C. and Heidenreich, E.}, title = {Geometric Multigrid Methods on Structured Triangular Grids for Incompressible Navier-Stokes Equations at Low Reynolds Numbers}, journal = {International Journal of Numerical Analysis and Modeling}, year = {2014}, volume = {11}, number = {2}, pages = {400--411}, abstract = {
The main purpose of this work is the efficient implementation of a multigrid algorithm for solving Navier-Stokes problems at low Reynolds numbers in different triangular geometries. In particular, a finite element formulation of the Navier-Stokes equations, using quadratic finite elements for the velocities and linear finite elements to approximate the pressure, is used to solve the problem of flow in a triangular cavity, driven by the uniform motion of one of its side walls. An appropriate multigrid method for this discretization of Navier-Stokes equations is designed, based on a Vanka type smoother. Moreover, the data structure used allows an efficient stencil-based implementation of the method, which permits us to perform simulations with a large number of unknowns with low memory consumption and a relatively low computational cost.
}, issn = {2617-8710}, doi = {https://doi.org/2014-IJNAM-534}, url = {https://global-sci.com/article/83352/geometric-multigrid-methods-on-structured-triangular-grids-for-incompressible-navier-stokes-equations-at-low-reynolds-numbers} }