An automated mesh creation method for automatically creating meshes for a model that may be applied in a mold flow analysis. The method includes the steps of creating surface meshes for the model from a CAD model or a STL file; refining the surface meshes; creating boundary solid meshes for the model; creating interior solid meshes for the model; improving the quality of the boundary solid meshes or the interior solid meshes; performing a true 3D model flow analysis for the model according to the surface meshes, the boundary solid meshes and the interior solid meshes; and adjusting the surface meshes, the boundary solid meshes or the interior solid meshes according to any inaccuracy of the mold flow analysis.