A New Development of Multi-to-One Cell-Matching Method and Its Application in VOF Interface Tracking
A new algorithm—multi-to-one cell matching method for interface tracking in volume-of-fluid (VOF) calculation is presented. This method is based upon unstructured grid and implemented on cells having quadrilaterals or hexahedrons origin. This method utilizes the geometrical characteristic of each vertex in an arbitrary cell to classify the vertex type and to group faces into four (two dimensional) or six (three dimensional) groups. The final regrouped arbitrary cells have the similar geometric information and VOF distributions as that of quadrilaterals or hexahedrons. Convective flux to solve the volume evolution equation can then be exactly evaluated. The method was implemented on unstructured adaptive mesh for VOF simulation. Numerical results for those test problems provide evidence for the algorithm’s quality, and accuracy.