1D-3D Boundary Condition Coupling

charles4allme · February 14, 2019, 13:28

Hi,

I have a 1D model that I developed using C++. I would like to couple the 1D model to OpenFOAM by doing this:
- Solve the 1D model to get the values for the variables i.e. velocity, pressure etc.
- Supply the values as a boundary condition for the 3D model in OpenFOAM.
- Solve the 3D model and supply the solved values to the 1D model.
This process is made to happen after every time step.
I wanted to know how I can go about the problem. Do I need to develop a new boundary condition or come up with a C++ script where I use functions to exchange the informations. Any advice would be greatly appreciated.

Regards,
OKorie

clapointe · February 14, 2019, 22:30

Have you seen this : https://github.com/OpenFOAM/OpenFOAM...hScalarField.H ? It is for temperature, but I bet you'd be able to get it to work for an arbitrary field.

Caelan

charles4allme · February 18, 2019, 09:14

Thanks. I will look into it and get back to you.

Regards,
OKorie

February 14, 2019, 13:28	1D-3D Boundary Condition Coupling	#1
charles4allme Member Join Date: Feb 2018 Posts: 91 Rep Power: 8	Hi, I have a 1D model that I developed using C++. I would like to couple the 1D model to OpenFOAM by doing this: - Solve the 1D model to get the values for the variables i.e. velocity, pressure etc. - Supply the values as a boundary condition for the 3D model in OpenFOAM. - Solve the 3D model and supply the solved values to the 1D model. This process is made to happen after every time step. I wanted to know how I can go about the problem. Do I need to develop a new boundary condition or come up with a C++ script where I use functions to exchange the informations. Any advice would be greatly appreciated. Regards, OKorie

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February 14, 2019, 22:30		#2
clapointe Senior Member Join Date: Aug 2015 Posts: 494 Rep Power: 15	Have you seen this : https://github.com/OpenFOAM/OpenFOAM...hScalarField.H ? It is for temperature, but I bet you'd be able to get it to work for an arbitrary field. Caelan

February 18, 2019, 09:14		#3
charles4allme Member Join Date: Feb 2018 Posts: 91 Rep Power: 8	Thanks. I will look into it and get back to you. Regards, OKorie