blower

[ilfrau]

hello to all
I am doing an exercise aimed at basic fluent learning (ansys workbench 13 package).
my problem is the analysis of the air motorcycle field in the crossing of a fan
I have been given cad files of simplified geometry (for example the fan blade shaft is not supported by anything).
I proceeded as follows, but I don't know if I did well:

• imported the geometry of the fluid part after having removed it with a bolean operation, the geometry of the blades and the shaft without maintaining these: I therefore have the geometry of the fliudo with "scavata" the geometry of the blades and tree, without these solids inside

• Mass

• imposed in the fluent in the menu cell zone conditions the frame motion, rotation axis z, and its rotation speed (turn the fluid instead of turning the blades)

• in boundary conditions though, under the wall entry, they told me to set wall motion : moving wall, instead of the default stationary wall option.
• but it seems wrong because ok, the fluid turns instead of turning the blades, but it seems wrong to turn the wall too
• ...

have I followed the right methodology here?

is correct to eliminate the geometry of the blades and the shaft with a bolean operation, but not keeping such physical geometries in the model?
do not have repercussions after I "turn the fluid?" Why do I think that by turning a fluid volume that has "excavated" the geometry of the blades... well this geometry will swirl with the fluid not? So it's like the blades weren't right?

I also have to do the same simulation with a fifth of the geometry.
In fact I have 5 blades that do not overlap and the geometry of the conduit and circular
every fifth therefore would take a shovel
I don't know how to set the conditions in the fluent for simulation. . .

 

[ilfrau]

If I do not command to rotate the wall surface, when I go in run calculation -> chack houses gives me the warning I brought back in the image...so the wall must turn at the end?