(Hybrid Eulerian-Lagrangian Method)
Fully nonlinear potential-flow solver.
Seakeeping in minutes, on a single PC.
O(N log N) complexity. Seakeeping cases done in minutes.
Nonlinear free surface + instantaneous wet surface. Only viscosity omitted.
Just provide a triangular hull mesh. No free-surface meshing needed.
Free surface up to 100Γ body length at minimal extra cost.
Three layers of "Hybrid" design enable HELM's balance of accuracy, speed, and simplicity.
Overset grids on an earth-fixed frame. Free surface is auto-handled; users only supply a body mesh.
Semi-Mixed Eulerian-Lagrangian tracking via Zakharov formulation. PLANNED Full Lagrangian mode for slamming & jet flows.
SCBEM core: spectral method for far-field waves, BEM for near-field flow β large domain, small cost.