OF V1812 - new Atmospheric BC help..

Solo Sails · March 12, 2019, 06:00

Hi There,

I am a work it out as I go along foamer, so please go easy on me!

I have been trying to set up the simplest of cases

10m cube with all sides and floor as no slip walls and a zero gradient outlet using simpleFoam

but have been trying to set up the inlet using the new Improved atmospheric boundary layer conditions in V 1812 https://www.openfoam.com/releases/op...ary-conditions

Obviously I do have V1812 installed and running!

I am just copying and pasting the demo inlet conditions example from the link above, but just cannot run the case, it reads P and U then stops, no error, no anything.

There doesn't seem to be much information around about Atmospheric boundary inlets, and absolutely nothing on this new version, if anyone understands how to set it up and could point me in the right direction, I would be grateful.

Basically, I am trying to set up an external flow simulation with a graduated U speed and direction up the Z axis in order to simulate apparent wind (twist) over a moving object in real world atmospheric boundary layer

The domain needs to be at least 20m Z 20m x 60m Y

Thanks again!

clapointe · March 13, 2019, 00:12

There is (nearly) always information in the corresponding .H file about how to use a boundary condition. You can find it in the source code. There is also a simpleFoam tutorial that uses it : https://develop.openfoam.com/Develop.../turbineSiting.

Caelan

Solo Sails · March 13, 2019, 03:50

Hi there, thanks for that, I didn’t know about the .h file or the tutorial! Thanks again.

March 12, 2019, 06:00	OF V1812 - new Atmospheric BC help..	#1
Solo Sails New Member Andrew Wood Join Date: Oct 2011 Posts: 15 Rep Power: 15	Hi There, I am a work it out as I go along foamer, so please go easy on me! I have been trying to set up the simplest of cases 10m cube with all sides and floor as no slip walls and a zero gradient outlet using simpleFoam but have been trying to set up the inlet using the new Improved atmospheric boundary layer conditions in V 1812 https://www.openfoam.com/releases/op...ary-conditions Obviously I do have V1812 installed and running! I am just copying and pasting the demo inlet conditions example from the link above, but just cannot run the case, it reads P and U then stops, no error, no anything. There doesn't seem to be much information around about Atmospheric boundary inlets, and absolutely nothing on this new version, if anyone understands how to set it up and could point me in the right direction, I would be grateful. Basically, I am trying to set up an external flow simulation with a graduated U speed and direction up the Z axis in order to simulate apparent wind (twist) over a moving object in real world atmospheric boundary layer The domain needs to be at least 20m Z 20m x 60m Y Thanks again!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
outerCorrectorResidualControl OpenFOAM v1812 vs. OpenFOAM 6	Kobi_Faust	OpenFOAM Running, Solving & CFD	5	February 28, 2019 08:51
outerCorrectorResidualControl OpenFOAM v1812 vs. OpenFOAM 6	Kobi_Faust	OpenFOAM Running, Solving & CFD	0	February 27, 2019 05:30
How to generate a atmospheric boundary layer	Morten Andersen	CFX	3	January 16, 2007 07:48
both ends at atmospheric	vid	FLUENT	0	October 25, 2005 06:30
Atmospheric Turbulence:what about the time scales?	Sebastien DELLA CROCE	Main CFD Forum	1	September 1, 2000 13:03

March 13, 2019, 00:12		#2
clapointe Senior Member Join Date: Aug 2015 Posts: 494 Rep Power: 15	There is (nearly) always information in the corresponding .H file about how to use a boundary condition. You can find it in the source code. There is also a simpleFoam tutorial that uses it : https://develop.openfoam.com/Develop.../turbineSiting. Caelan

March 13, 2019, 03:50		#3
Solo Sails New Member Andrew Wood Join Date: Oct 2011 Posts: 15 Rep Power: 15	Hi there, thanks for that, I didn’t know about the .h file or the tutorial! Thanks again.