when I use multi block the condition of stability can not be fulfilled
The run with :2 block(multi block) . time :49 & 50s ===>>> we havenít the condition of stability
The run with: one block. time :49 & 50s ===>>>we have the condition of stability
Im working on flip bucket.
As you illustrated in the pictures, when I use multi block the condition of stability can not be fulfilled, but in one block im able to reach the condition of stability.
As you know,one block simulation is time consumption
I want to know there is away to reach the condition of stability by using multi-block?
I want to know where I made mistake.i wonder if my friends could possibly make it crystal clear?
new run with new meshing
there is that problem
the condition of stability can not be fulfilled
block N.1 : cell size=1 cm
block N.2(on flip bucket) : cell size= 0.6 cm
block N.3 : cell size=1 cm
The cells should be even multiples of those in the adjacent block. That is, your flip-bucket block should have cells that are 0.5 units long (cubes are best), not 0.6. FLOW-3D interpolates results between mesh blocks; if the cell grid lines don't line up exactly, then interpolation leads to momentum diffusion and stability difficulties (pressure solver).
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