Use the result of 2D simulation into 3D simulation

hi everyone!

i want to increease the speed of my 3D simulation, so i have a idea: the result of a 2D simulation is used as the initial value of a 3D simulation, then maybe the 3D simulation can find a suitable result quickly. Does my idea work? how can i use the result of 2D into the 3D simulation?

thank you very much!