Numerical simulations of fluid mixing and optimization of mixers

A computational tool for fast simulation of laminar fluid mixing, capable of dealing with industrial mixer geometries is presented. This method uses extensive computations to create a sparse mapping matrix (set of matrices) that describes fluid transport between the cells covering the flow domain. These extensive computations necessitate parallel processing, which is easily realizable due to the huge number of independent steps involved. Then, mixture evolution on a (large) time step is computed using matrix-vector multiplications. We evaluate the capability of the technique to cope with industrial mixer geometries. This forms the basis for optimization of mixer design.