wind tunnel

[pironman]

I realized in solidworks a kart, so I wanted to try it in the wind tunnel (by curiosity, not by necessity).

I then built the tunnel, a simple pipe with the lids on the sides, and started floxpress to try it, and it works.

So, I put it in the axieme, inside the tube I put the kart, and it's not, it tells me that the lids are missing.

But why? The lids are there!

 

[pironman]

I add one thing, I realized a man to put on board the kart, precisely not having famines and being the kart only tubes, is what makes the aerodynamics, and I had the problems mentioned above.

if instead I load the kart file without a man above, everything goes, why?

 

[pironman]

do not offend you, but in this forum there is someone who knows something about cad?

I opened 3 topics on 3 different things, I had an answer!

 

[Onda]

I read your questions. I would say they are really too generic and bad set to receive an answer. I think that's why no one has answered you so far.
about your fluid dynamic analysis to try....... try by inserting simple bodies within the control volume. Once the simulation turns it complicates the model. try to combine the components in order to have a single solid.

 

[Onda]

I forgot.
cad, fem, cfd is not synonymous.

 

[pironman]

hi, yes in fact the problem is exactly that, if I insert the kart alone (which however already of its is complicated), I calculate it, but they are only tubes and I wanted to see with the man above, since it is what makes volume, we say.

But if I add the man, precisely, it does not calculate me.

 

[Onda]

did you try to make a boolean to the body of the cart and that of the man to make a single model?
Moreover, it makes surfaces easier

 

[pironman]

that is to make it become like a unique body?

No I didn't try, how do you do it?

Thanks :finger:

 

[Onda]

rtfm (see guide)

 

[Max-C]

lids are necessary because the aid must be closed.
on youtube find many tutorials about how to make fluid dynamic simulations with flowsimulation