Questions about IC for buoyantPimpleFoam and turbulence->divDevRhoReff(U) in code

jiaweichen · October 28, 2016, 05:53

Hallo everyone,
I'm doing simulation and writing some documentation for my institut. And I have also some questions about the code of buoyantPimpleFoam below.

1. For buoyantPimpleFoam solver, is the Initial Pressure important? I mean, should I choose the hydrostatic pressure or homogeneous pressure for 2D-simulation, in which gravity plays a role in the simulation. Because the Max.velocity in simulation(3m/s) with homogeneous pressure is 2-times larger than from measurement(1.6m/s).

2. About turbulence->divDevRhoReff(U) in code
https://github.com/OpenFOAM/OpenFOAM...yantPimpleFoam

I cannot find the source code of turbulence->divDevRhoReff(U). Does anyone know where it is?

I will be really grateful if someone can help me to solve these problems.

Best Regards,
Jiawei Chen

jiaweichen · October 28, 2016, 06:23

OK. I find 'divDevRhoReff' for LES is in
https://github.com/OpenFOAM/OpenFOAM...del/LESModel.H
and it's the source term for the momentum equation.
But how can it be calculated from turbulence model? for example, from oneEqEddy

October 28, 2016, 05:53	Questions about IC for buoyantPimpleFoam and turbulence->divDevRhoReff(U) in code	#1
jiaweichen New Member Chen Jiawei Join Date: Oct 2016 Posts: 2 Rep Power: 0	Hallo everyone, I'm doing simulation and writing some documentation for my institut. And I have also some questions about the code of buoyantPimpleFoam below. 1. For buoyantPimpleFoam solver, is the Initial Pressure important? I mean, should I choose the hydrostatic pressure or homogeneous pressure for 2D-simulation, in which gravity plays a role in the simulation. Because the Max.velocity in simulation(3m/s) with homogeneous pressure is 2-times larger than from measurement(1.6m/s). 2. About turbulence->divDevRhoReff(U) in code https://github.com/OpenFOAM/OpenFOAM...yantPimpleFoam I cannot find the source code of turbulence->divDevRhoReff(U). Does anyone know where it is? I will be really grateful if someone can help me to solve these problems. Best Regards, Jiawei Chen

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Turbulence postprocessing	Mohsin	FLUENT	2	October 3, 2016 14:18
Displaying Turbulence Intensity in LES and creating a constant Turbulence Intensity	Anwer	FLUENT	1	August 8, 2016 16:59
Turbulence length scale	Leonpolou	FLUENT	2	January 23, 2013 07:26
Open source CFD code development, possible?	Dr. Yazid Bindar	Main CFD Forum	27	July 18, 2000 00:18
public CFD Code development	Heinz Wilkening	Main CFD Forum	38	March 5, 1999 11:44

October 28, 2016, 06:23		#2
jiaweichen New Member Chen Jiawei Join Date: Oct 2016 Posts: 2 Rep Power: 0	OK. I find 'divDevRhoReff' for LES is in https://github.com/OpenFOAM/OpenFOAM...del/LESModel.H and it's the source term for the momentum equation. But how can it be calculated from turbulence model? for example, from oneEqEddy