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CFX Dynamic Mesh HELP!

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Old   March 4, 2014, 16:43
Default CFX Dynamic Mesh HELP!
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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


well hole distance 100m

10 hr

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
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cfx, mesh, multi phase flow

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