Unstructured Lattice Boltzmann method for Non-Newtonian flows
نویسندگان
چکیده
Non-Newtonian models with shear-thinning viscosity are commonly used to solve a variety of complex flow problems. A new finite-volume discretisation based upon an unstructured grid is used to integrate the differential form of the Lattice Boltzmann equation (ULBE) with a shear-dependent viscosity, using a cell-vertex finite-volume technique. The unknown fields are placed at the nodes of the mesh and evolve based on the fluxes crossing the surfaces of the corresponding control volumes. Numerical results show a satisfactory accuracy also in the case of relatively complex geometries and demonstrate the capability of the method to predict the main features of Non-Newtonian flows in straight and stenosed channels. ULBE for Non-Newtonian flows 2
منابع مشابه
The unstructured lattice Boltzmann method for non-Newtonian flows
Non-Newtonian models with shear-thinning viscosity are commonly used to solve a variety of complex flow problems. A new finite-volume discretization based upon an unstructured grid is used to integrate the differential form of the lattice Boltzmann equation with a shear-dependent viscosity, using a cell-vertex finite-volume technique. The unknown fields are placed at the nodes of the mesh and e...
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