Fig. 3
From: Geometry aware physics informed neural network surrogate for solving Navier–Stokes equation (GAPINN)
Schematic of irregular geometric vessel with a fixed set of boundary and fluid domain points. With Dirichlet and Neumann boundary conditions: parabolic velocity profile at the inlet, zero velocity at walls and zero pressure at the outlet as well as zero gradient in reference to normal vectors (n) of geometry for pressure on inlet and vessel walls and velocity at the outlet. Red points are indicating internal points and green points are indicating points on the boundary