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full simulation of an aircraft with propeller effect |
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June 17, 2010, 11:25 |
full simulation of an aircraft with propeller effect
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#1 |
Member
Burak
Join Date: May 2009
Posts: 90
Rep Power: 17 |
Hi all,
I searched the forum but no clear answers. In order to simulate an aircraft with a propeller at the front (let's say it is a cessna 172): In gambit: (1)Can I simulate the propeller by a circular zero-thickness surface? (2)If yes, should I split the volume with that surface? (3)Which boundary condition must be given to that surface? In fluent: (4)With that boundary condition given in gambit, during steady state analysis, will it suck the air in front of the propeller and give it back with much more velocity/pressure? (5)Can I give the rotating effect of air after the propeller? Thanks in advance. Burak |
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June 17, 2010, 11:47 |
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#2 |
New Member
Kamil Sobczak
Join Date: Jan 2010
Location: Warsaw, Poland
Posts: 6
Rep Power: 16 |
In gambit:
(1)Can I simulate the propeller by a circular zero-thickness surface? - Yes you can. (2)If yes, should I split the volume with that surface? - This is correct operation. (3)Which boundary condition must be given to that surface? - Fan will be good. In fluent: (4)With that boundary condition given in gambit, during steady state analysis, will it suck the air in front of the propeller and give it back with much more velocity/pressure? - In b.c. panel you can input value of constant pressure jump - Force generated by propeller divided by area of propeller surface. (5)Can I give the rotating effect of air after the propeller? - Default option in fan b.c. panel allows some swirl velocity but I don't understand how this works. So I input udf function to simulate rotating velocity. But if your model is a simplification of propeller by surface I'm not seeing a point to include rotating effect in a simulation. |
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June 18, 2010, 02:29 |
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#3 |
Member
Burak
Join Date: May 2009
Posts: 90
Rep Power: 17 |
Hi Kamil,
Thanks for your reply. I will try it as soon as possible. By swirling effect, I just wondered if I can see the swirling air hitting to the vertical stabilizer. This was just for fun |
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January 17, 2024, 04:08 |
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#4 |
New Member
Venkat
Join Date: Jan 2024
Location: India
Posts: 2
Rep Power: 0 |
I need to do this type of simulation where i need to calculate thrust and lift by transient analysis in ansys fluent. Can you help me to find how to proceed with it? i separated propeller from aircraft and gave cylinder enclosure for propeller and box enclosure for entire aircraft and propeller. Then i boolean subtracted the propeller from the cylinder enclosure and aircraft from box enclosure and cylinder from box enclosure with retain body of propeller. But how should i give constrain ?
I use transient solver with SST k omega, coupled solver and frame motion for rotating propeller which is not in origin of the coordinates. I amgeting wrong results. what should i do? |
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