Font Size: 

This paper presents a fast transient solver suitable for the simulation of incompressible flows. The main characteristic of the solver is that it is based on the projection method and requires only one pressure and momentum solve per time step. Furthermore, advantage of using the projection method in the formulation is the particularly efficient form of the pressure equation that has the Laplacian term depending only on geometric quantities. This form is highly suitable for the high performance computing that utilises the Algebraic Multigrid Method (AMG) as the coarse levels produced by the algebraic multigrid can be stored if the grid is not changing. Fractional step error near the boundaries is removed by utilising the incremental version of the algorithm. The solver is implemented in the Caelus library that is freely available. Accuracy of the solver was investigated through several validation cases. The results indicate the solver is accurate and has good computational efficiency.

Projection Method; Fractional Step Algorithm; Algebraic Multigrid Solver, Transient solutions, Validation