Surface Goals in External flow

Snow360 · February 16, 2016, 05:12

I am trying to obtain surface goals of the external flow. I was wondering how I can achieve this without creating a solid surface. What I essentially want is an area goal. Any tips?

Snow360 · February 22, 2016, 06:56

I am still having troubles with this. What I want is the average temperatures and pressures at a specific cross section of the computational domain. There are no surfaces at that point.

So far, the only option I could think of was taking a lot of points on the plane of interest, and then averaging. However , this sounds extremely tedious.

Is there anyway to apply a surface goal to a plane?

Vejby · February 22, 2016, 07:02

I am not sure if this works, but have you tried to create a solid body with a surface where you want to apply the SG and then deactivate it in Component Control (then it is considered as fluid). That way you have a surface to apply your SG to.
I have not tried it, but its worth a try.

Snow360 · February 22, 2016, 07:07

I was debating trying that, but I thought if the solid was deactivated the surface would be too.

I'll give it a shot and then post an update!

Snow360 · February 22, 2016, 09:39

I tried to surpress the solids after specifying the surface goals. It would produce an error saying the surface is not defined.

In the end, I decided to use the tedious point goal average approach.
I have began to introuduce 25 point goals across my area of 7x3 mm to begin my validation of results. I will take the average of these and see how it compares with the experimental results.

Vejby · February 22, 2016, 10:11

Did you suppress it in Component Control?
If you look in tutorial C5 (Rotating Impeller), there is a example of the use of a deactivated solid to put a SG on.

Snow360 · February 22, 2016, 16:06

Thanks, I'll take a look at that tutorial tomorrow. It sounds like just what I'm looking for

Snow360 · February 23, 2016, 05:10

Yup, it worked out. Thank you!

February 16, 2016, 05:12	Surface Goals in External flow	#1
Snow360 New Member Join Date: Feb 2016 Posts: 14 Rep Power: 10	I am trying to obtain surface goals of the external flow. I was wondering how I can achieve this without creating a solid surface. What I essentially want is an area goal. Any tips?

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February 22, 2016, 06:56		#2
Snow360 New Member Join Date: Feb 2016 Posts: 14 Rep Power: 10	I am still having troubles with this. What I want is the average temperatures and pressures at a specific cross section of the computational domain. There are no surfaces at that point. So far, the only option I could think of was taking a lot of points on the plane of interest, and then averaging. However , this sounds extremely tedious. Is there anyway to apply a surface goal to a plane?

February 22, 2016, 07:02		#3
Vejby New Member A. Lindgren Join Date: Feb 2016 Posts: 6 Rep Power: 10	I am not sure if this works, but have you tried to create a solid body with a surface where you want to apply the SG and then deactivate it in Component Control (then it is considered as fluid). That way you have a surface to apply your SG to. I have not tried it, but its worth a try.

February 22, 2016, 07:07		#4
Snow360 New Member Join Date: Feb 2016 Posts: 14 Rep Power: 10	I was debating trying that, but I thought if the solid was deactivated the surface would be too. I'll give it a shot and then post an update!

February 22, 2016, 09:39		#5
Snow360 New Member Join Date: Feb 2016 Posts: 14 Rep Power: 10	I tried to surpress the solids after specifying the surface goals. It would produce an error saying the surface is not defined. In the end, I decided to use the tedious point goal average approach. I have began to introuduce 25 point goals across my area of 7x3 mm to begin my validation of results. I will take the average of these and see how it compares with the experimental results.

February 22, 2016, 10:11		#6
Vejby New Member A. Lindgren Join Date: Feb 2016 Posts: 6 Rep Power: 10	Did you suppress it in Component Control? If you look in tutorial C5 (Rotating Impeller), there is a example of the use of a deactivated solid to put a SG on.

February 22, 2016, 16:06		#7
Snow360 New Member Join Date: Feb 2016 Posts: 14 Rep Power: 10	Thanks, I'll take a look at that tutorial tomorrow. It sounds like just what I'm looking for

February 23, 2016, 05:10		#8
Snow360 New Member Join Date: Feb 2016 Posts: 14 Rep Power: 10	Yup, it worked out. Thank you!