BC: type symmetry

ThorgrimmCFD · February 17, 2015, 04:53

Can someone explain me this BC?

Thx

elvis · February 17, 2015, 06:54

Hi,

you want to simulate a flying plane for example.
You can reduce you mesh by creating just half of the plane!
Now if you take a BC like Wall and not SYMMETRY your Simulation would not get the correct results

ThorgrimmCFD · February 17, 2015, 08:54

Thx elvis for the reply!

I am using the BC type symmetry for my "Ahmed Body"-example for the left, right and upper wall for my bounding box.

So I am not using just the half of my domain of interest. My results look fine but I am wondering how the BC is executed?

Is it just a Neumann type BC?

February 17, 2015, 04:53	BC: type symmetry	#1
ThorgrimmCFD New Member Alexander Join Date: Aug 2014 Location: Graz Posts: 11 Rep Power: 12	Can someone explain me this BC? Thx

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February 17, 2015, 06:54		#2
elvis Senior Member Elvis Join Date: Mar 2009 Location: Sindelfingen, Germany Posts: 620 Blog Entries: 6 Rep Power: 24	Hi, you want to simulate a flying plane for example. You can reduce you mesh by creating just half of the plane! Now if you take a BC like Wall and not SYMMETRY your Simulation would not get the correct results

February 17, 2015, 08:54		#3
ThorgrimmCFD New Member Alexander Join Date: Aug 2014 Location: Graz Posts: 11 Rep Power: 12	Thx elvis for the reply! I am using the BC type symmetry for my "Ahmed Body"-example for the left, right and upper wall for my bounding box. So I am not using just the half of my domain of interest. My results look fine but I am wondering how the BC is executed? Is it just a Neumann type BC?