Will HydroGraphNet Be Updated from SWE to Navier–Stokes (NSE)?

Hello everyone,

I am studying HydroGraphNet, a physics-informed, graph-based neural operator designed as a fast surrogate for HEC-RAS–style shallow water equation (SWE) solvers in flood forecasting.

From my understanding, HydroGraphNet:

  • Learns depth-averaged hydraulic dynamics (water depth, velocity, discharge)

  • Is trained on SWE-based numerical solvers (e.g., HEC-RAS 1D/2D)

  • Prioritizes real-time, basin-scale prediction

However, many real flood scenarios (e.g., debris-laden floods, mudflows, density-varying flows, strong vertical accelerations) violate SWE assumptions and are more accurately described by full 3D Navier–Stokes equations (NSE) or particle-based methods (SPH).