2-D MATLAB code to simulate flow of one fluid into another in a Hele-Shaw cell. The code uses either of the two numerical methods to step forward in time :-
AB - Adam-Bashforth
RK - Runge-Kutta
Here, the characters after the underscore signify which fluid is injected into which:-
NN - Newtonian into Newtonian
VN - Visco-elastic (Oldroyd-B Model) into Newtonian
STN Shearthinning (Carreau Model) into Newtonian.