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[ICEM] 2D blocking of a multi-element airfoil

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Old   February 17, 2015, 03:52
Default 2D blocking of a multi-element airfoil
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Anthony McCarthy
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Hi Guys,

My names is Anthony and i am currently studying for my undergraduate degree. I am trying to do analysis of airfoils using ICEM and FLUENT.

I am trying to do a 2D analysis on a multi-element airfoil, and am having problems creating the blocking for such an airfoil? As in 3 separate elements with their own blocking. For a single element i have no problems. For this do i have to use the surface blocking instead? and if so can i then create blocks so i can define my boundary layer?

This may seem like a very elementary problem as i am fairly new so all help is appreciated

Thanks a lot
Anthony
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Old   February 17, 2015, 14:29
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Sebastian Engel
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Hello Anthony,

i think you can create the blocking of the multielement airfoil the same way you did the previous airfoil (with a planar blocking). Except, your blocking will become more complex.

with regards,
Sebastian
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Old   February 17, 2015, 14:35
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Anthony McCarthy
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Hey Sebastian,

Thank you for the reply.

O Okay as i was trying to do this but i kept and getting confused. Do you know what strategy you would undertake this by any chance as the current method i was using was to use a Ogrid what i would split and then collapse the vertices and associate this to the element.

If i try this method with the 3 elements it gets very messy and i lose track on what i mean to do. Maybe i just need to keep practicing then?
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Old   February 18, 2015, 10:47
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Sebastian Engel
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Giving a general approach on how to mesh your geometry without having a look at it seems difficult. Moreover, I only have meshed a few airfoils (just simple ones) before myself.
To give you a few ideas how to design your mesh, have look at these pages:
http://www.pointwise.com/theconnector/November-2012/Meshing-for-Aeroacoustics.shtml
http://sandi.co.in/v2/home/projects/aerospace/nhlp2d/
http://sandi.co.in/v2/home/projects/aerospace/omar/
Following those examples, it seems to be a good idea to keep the c-grid structure.
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Old   February 20, 2015, 09:25
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Anthony McCarthy
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Thanks Sebastian for the links and help.

Unfortunately it seems a bit out of my depth for now so will not be continuing that element of the project.
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airfoil analysis, airfoil blocking, fluent 15, icem, icem 2d blocking


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