Use an Outlet node to define where the vector field ends. For the Diffusion Method, this means that U = 0; for the Elasticity Method, it sets e × n to 0. For the Flow Method, it is a zero pressure and no stress condition: p = 0 and (∇u + (∇u)T) · n = 0. Select the boundaries to define as the vector field’s outlet in the Boundary Selection section.