surface film thickness visualisation

Rid@foam · September 3, 2020, 14:23

Hello foamers. I am working on sprayFoam and I have started working on surface film modeling and droplet impingement interaction with the film.
Please tell me what I have to do (what options/data/filters I have to apply) in order to visualise the surface film thickness as shown in figure 4. b. (the right hand side figure) of the image that I have attached below in paraview.

clapointe · September 3, 2020, 16:19

Checking out one of the film models (e.g. kinematic single layer, https://github.com/OpenFOAM/OpenFOAM...cSingleLayer.H), we see :

Code:

//- Film thickness [m]
            volScalarField delta_;

So delta should get you want you're looking for. You can find a description of other fields in that file as well.

Caelan

Rid@foam · September 4, 2020, 13:05

Thank you Caelan sir very much for your reply. Now I understand what film thickness is.
But my question is how can I visualise the film in paraview the exact same way as shown in my previous attached figure.
I have converted the film region to VTK and opened it in paraview but I only get a contour visualisation of the thickness (like the figure attached below). What extra filters/data I have to apply to get the physical visualisation of the film as given in my previous attached figure.

clapointe · September 4, 2020, 13:13

I am not familiar with that image (or what paper it came from) so it is hard to say. However, you can load the film region into paraview (e.g. with paraFoam -region filmRegion) and then experiment with different filters. If I had to guess the film region was clipped to some value and the resulting surface was then colored by delta.

Caelan

September 3, 2020, 14:23	surface film thickness visualisation	#1
Rid@foam Member Riddhideep Biswas Join Date: May 2020 Posts: 30 Rep Power: 5	Hello foamers. I am working on sprayFoam and I have started working on surface film modeling and droplet impingement interaction with the film. Please tell me what I have to do (what options/data/filters I have to apply) in order to visualise the surface film thickness as shown in figure 4. b. (the right hand side figure) of the image that I have attached below in paraview. Last edited by -mAx-; September 22, 2022 at 02:19.

September 3, 2020, 16:19		#2
clapointe Senior Member Join Date: Aug 2015 Posts: 494 Rep Power: 14	Checking out one of the film models (e.g. kinematic single layer, https://github.com/OpenFOAM/OpenFOAM...cSingleLayer.H), we see : Code: //- Film thickness [m] volScalarField delta_; So delta should get you want you're looking for. You can find a description of other fields in that file as well. Caelan

September 4, 2020, 13:05		#3
Rid@foam Member Riddhideep Biswas Join Date: May 2020 Posts: 30 Rep Power: 5	Thank you Caelan sir very much for your reply. Now I understand what film thickness is. But my question is how can I visualise the film in paraview the exact same way as shown in my previous attached figure. I have converted the film region to VTK and opened it in paraview but I only get a contour visualisation of the thickness (like the figure attached below). What extra filters/data I have to apply to get the physical visualisation of the film as given in my previous attached figure. Last edited by -mAx-; September 22, 2022 at 02:19.

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September 4, 2020, 13:13		#4
clapointe Senior Member Join Date: Aug 2015 Posts: 494 Rep Power: 14	I am not familiar with that image (or what paper it came from) so it is hard to say. However, you can load the film region into paraview (e.g. with paraFoam -region filmRegion) and then experiment with different filters. If I had to guess the film region was clipped to some value and the resulting surface was then colored by delta. Caelan