One of the most interesting passive drag reduction techniques is based on use riblets or streamwise grooved surfaces. Detailed flow features inside grooves can be numerically detected only by Direct Numerical Simulations (DNS), still unfeasible for high Reynolds numbers and complex flows. Many papers report DNS flows microgrooved surfaces providing fundamental details devices, but all are limit...

Simulation-based modeling means the generation of CAD models from simulation results. It is eecient to split this process into several steps, such as collection, triangulation, and segmentation of the data and surface reconstruction. The last step is solved by a physically based approach, which enables interaction intuitively, and we prove the existence and uniqueness of the solution for this c...