Physics as data / Quantities

Physical fields

Decide which quantities the model must reproduce before choosing the model.

• Surface: Pressure, wall shear stress, heat flux. Loads, lift and drag, hot spots: what designers integrate.
• Volume: Velocity, pressure, vorticity, temperature, turbulence quantities. Wakes, vortices, separation, mixing: what explains the surface numbers.
• Integral: Lift, drag and moment coefficients, efficiency. The few numbers that decide a design; scalar surrogates stop here.

Related

• Representations: Voxel grids, graphs or point clouds: how geometry and fields become numbers.
• Surface and volume fields: Predict the field everywhere in the domain, not just on the walls: velocity, pressure, temperature in the volume.
• Validation: Compare surrogate and solver on designs the network never saw, inside and outside the training range.