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2D airfoil-- Problem with Boundary conditions |
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May 27, 2016, 11:17 |
2D airfoil-- Problem with Boundary conditions
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#1 |
New Member
J SB
Join Date: Aug 2015
Posts: 6
Rep Power: 10 |
Hi everyone:
I am simulating air flow over an airfoil. Most of the tutorials use a "top-down approach, where you create one simple geometry for the whole domain in the first place and then splits it into smaller blocks" (from one to four in my case) However, this method didn't worked in my case. Therefore, I used a second option known as bottom-up approach, where you create a separate sketch for each of the four blocks you want to have in the end. Bottom up-approach worked. However, when I define boundary conditions, the edges which contact the 4 surfaces (you can see them in the end link that I attach) are defined as "wall" and I canīt change them to "interior". Is there any solution? Any idea on how on how to solve this problem? I really appreciate any help you can provide, I am very frustrated. Here, you can see my mesh: And these are tree parameters: *In named selections, "interior" is defined by four separated faces. Finally, here You can see the boundary conditions: |
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June 13, 2016, 03:45 |
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#2 |
New Member
J SB
Join Date: Aug 2015
Posts: 6
Rep Power: 10 |
Anyone? I really appreciate any comment
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June 13, 2016, 06:46 |
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#3 |
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SAA
Join Date: Sep 2015
Posts: 12
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Isnt part4 surface body actually just the surface of the airfoil ?? Have you checked that ?
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June 20, 2016, 12:34 |
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#5 |
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J SB
Join Date: Aug 2015
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Hi!Thanks for your reply. The Aifoil is enclosed for the four surfaces, I have not established a surface for the airfoil. Airfoil's edge is defined as a named selection (blade).
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June 20, 2016, 13:38 |
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#6 | |
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J SB
Join Date: Aug 2015
Posts: 6
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Quote:
I attach this capture where you can see this zone. Many thanks for your tip. |
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June 28, 2016, 05:10 |
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#7 |
New Member
J SB
Join Date: Aug 2015
Posts: 6
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No other suggestions? I don't get a solution...
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June 29, 2016, 05:06 |
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#8 |
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Reynolds
Join Date: Apr 2016
Location: Spain
Posts: 28
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I did some simulations last year and my advice is to generate a geometry with the hole of the airfoil like in the picture below. There are some tutorials in YouTube, follow it and you will get the solution fast.
Regards.
__________________
A wife asks her husband, a software engineer... "Could you please go shopping for me and buy one carton of milk, and if they have eggs, get 6!" A short time later the husband comes back with 6 cartons of milk. The wife asks him, "Why the hell did you buy 6 cartons of milk?" He replied, "They had eggs." |
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June 29, 2016, 05:09 |
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#9 |
New Member
Reynolds
Join Date: Apr 2016
Location: Spain
Posts: 28
Rep Power: 10 |
The image.
__________________
A wife asks her husband, a software engineer... "Could you please go shopping for me and buy one carton of milk, and if they have eggs, get 6!" A short time later the husband comes back with 6 cartons of milk. The wife asks him, "Why the hell did you buy 6 cartons of milk?" He replied, "They had eggs." |
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