perturbU

Andela · April 12, 2016, 08:13

Hi everyone!

I would be grateful if someone can explain me how to use perturbU.
I checked on forum other's posts but I still don't know how to use it.

How can I add perturbation on interface between two fluids?
For now I just wmake it (perturbU for channel) and I added in transportProperties Ubar. That's all I do for now. Is there something other I must set before I can use perturbU?
Because after i try to use it i get this error:

From function regIOobject::readStream()
in file db/regIOobject/regIOobjectRead.C at line 73.

FOAM exiting

I am sorry on asking such question, but I am new to all this and I would really need some help.

Thank you...

Andela · April 14, 2016, 08:28

Ok, I figured it out how to use it. It's working.

Can somebody explain me what are and how can values in perturbUDict file be set up properly:
duPlus, betaplus alphaPlus, sigma, epsilon...?

calf.Z · December 4, 2018, 07:38

I am also interested in the meaning of the value in perturbudict，have you resolved it？Thank you.

April 12, 2016, 08:13	perturbU	#1
Andela New Member Marija Bervida Join Date: Mar 2016 Location: Slovenia Posts: 9 Rep Power: 9	Hi everyone! I would be grateful if someone can explain me how to use perturbU. I checked on forum other's posts but I still don't know how to use it. How can I add perturbation on interface between two fluids? For now I just wmake it (perturbU for channel) and I added in transportProperties Ubar. That's all I do for now. Is there something other I must set before I can use perturbU? Because after i try to use it i get this error: From function regIOobject::readStream() in file db/regIOobject/regIOobjectRead.C at line 73. FOAM exiting I am sorry on asking such question, but I am new to all this and I would really need some help. Thank you...

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Can't compile perturbU nor perturbCylinder	dvk1987	OpenFOAM Pre-Processing	2	May 19, 2014 15:34
is PerturbU there in OpenFOAM 2.1?	turbfoam	OpenFOAM Running, Solving & CFD	3	December 26, 2012 15:18
perturbU - version?	dvk1987	OpenFOAM Running, Solving & CFD	1	March 12, 2012 04:50
perturbU in OF 2.0 ?	TKE	OpenFOAM Pre-Processing	0	November 15, 2011 17:59
PerturbU	nzy102	OpenFOAM Running, Solving & CFD	0	April 23, 2007 20:06

April 14, 2016, 08:28		#2
Andela New Member Marija Bervida Join Date: Mar 2016 Location: Slovenia Posts: 9 Rep Power: 9	Ok, I figured it out how to use it. It's working. Can somebody explain me what are and how can values in perturbUDict file be set up properly: duPlus, betaplus alphaPlus, sigma, epsilon...?

December 4, 2018, 07:38		#3
calf.Z Senior Member Jianrui Zeng Join Date: May 2018 Location: China Posts: 157 Rep Power: 7	I am also interested in the meaning of the value in perturbudict，have you resolved it？Thank you.