[iorozco86]

hi every body, first, this site is awesome, I have found a lot of solutions for CFD troubles, thanks. a now the questions for help.

Im modeling in CFX solid - liquid phase flow, the objective is to simulate the transport of cuttings generated by the drilling bit during oil well drilling, I have achieve transient simulations with good agreement, and now I want to give the ultimate real approach of this model, simulate the rate of penetration of the drilling bit, the model is simple

I have an annular domain with inlet and one outlet, that simulate the hole while drilling with the solid liquid flowing trough it

(out)-----------------------------(in) <- drill bit advancing in the formation
well hole

what I want to do is simulate the change of the length of penetration of the drilling bit in the formation

1hr

(out)-----------------------------(in)
well hole distance 100m

10 hr

(out)-------------------------------------------(in)
well hole distance 150m

that implies that the domain have to grow, let say in the Z direction at certain velocity. ANY IDEAS, I have tried mesh deformation but I guess that's not the way as I have read, ANY IDEAS?

when I move IN bound it advance but deformation exist I want to keep its form but Im really lost in this situation to increase wall. ANY IDEAS