Problem with an obstacle in format stl

ounifiras · November 14, 2013, 16:19

DEAR EXPERTS

I am trying to simulate a weir in a channel, I prepare the STL form and I put it in the channel, but I was surprised by the resultas as the pictures shows, the barrier was crossed by the flow as if it does not exist, although it is imported as a solid, standard

JBurnham · November 14, 2013, 17:33

The mesh is not fine enough to resolve that thin .stl. There needs to be at least 2 (preferably 3 - 4) cells across the cross-section of all solids.

ounifiras · November 14, 2013, 18:31

thanks for explaining
I drew the STL file with Autocad and I import directly as STL file format, the mesh that I can change is the Block, I do not know how to change the mesh STL?

THANKS

zandi · November 16, 2013, 02:52

plz clarify your question. what exactly do you want to do?

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November 14, 2013, 17:33		#2
JBurnham Senior Member Jeff Burnham Join Date: Apr 2010 Posts: 204 Rep Power: 17	The mesh is not fine enough to resolve that thin .stl. There needs to be at least 2 (preferably 3 - 4) cells across the cross-section of all solids.

November 14, 2013, 18:31		#3
ounifiras Member ouni firas Join Date: Oct 2013 Posts: 33 Rep Power: 12	thanks for explaining I drew the STL file with Autocad and I import directly as STL file format, the mesh that I can change is the Block, I do not know how to change the mesh STL? THANKS

November 16, 2013, 02:52		#4
zandi Senior Member Fatema Zandi Goharrizi Join Date: Mar 2009 Posts: 158 Rep Power: 17	plz clarify your question. what exactly do you want to do?