[bief] New formulation U.grad(psi) U.grad(F) for vector in Finite Elements in 2D
New vector in subroutine VC22AA computing U.grad(psi) U.grad(F) for P1 triangular elements in 2D.
Implementation coming from Ayoub Mansar's internship for a new algorithm in TELEMAC-3D.
Edited by Chi-Tuân Pham