# Flapped Airfoil

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 March 17, 2005, 09:14 Flapped Airfoil #1 Jared Guest   Posts: n/a Hi, I have a model of a NACA0012 airfoil which works great. I now want to add a flap to the trailing edge and compute the flow using several different deflection angles. I have a script that will give me the boundary coordinates for the flapped airfoil, so i could use brute force and make a different gambit model for each deflection, but I'm wondering if there is a simpler way; maybe a way to make one model, and then be able to rotate the flap about the hinge for each angle. I'm sure lots of people have done this, but I wasn't able to find any examples in this forum or www.learningcfd.com, so any help or direction is much appreciated. Thank you, Jared

 March 17, 2005, 10:47 Re: Flapped Airfoil #2 Jörn Beilke Guest   Posts: n/a Have a look at this: http://www.gridpro.com/gridgallery/3elementairfoil.html Gambit might not be the best tool for this purpose

 March 17, 2005, 12:29 Re: Flapped Airfoil #3 Jared Guest   Posts: n/a So if i was stuck using Gambit, is there a way to just have the flap deflect?

 March 17, 2005, 12:43 Re: Flapped Airfoil #4 Jörn Beilke Guest   Posts: n/a You might try the moving mesh feature of Fluent.

 March 22, 2005, 20:06 Re: Flapped Airfoil #5 Chetan Kadakia Guest   Posts: n/a I don't think moving mesh won't work, unless you are acutally studying the transition from flaps up to flaps down and changing angles of flaps. But if you are looking at a flap in a fixed angle, then you just need to recreate the mesh. However, you can rotate the flap angle in Gambit by choosing the center (I think you may have to create a local coordinate axis) let's say at the leading edge, and then rotate as needed (default axis of rotation will be (0, 0, 1). So the mesh should be fairly easy to recreate for several deflections.

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