Possibility to plot fluid Streamline velocity in the SOLID model ??

Kummi · November 23, 2019, 06:55

Hello Foamers,
My topic of research is related to coal pyrolysis (solid region) in OpenFOAM.
I would like to draw the streamline velocity plot for the release of pyrolysis gases after the coal decomposition. [As shown in the attachment]
But it seems not possible to plot the fluid streamline velocity inside the solid (pyrolysis) model.
Any ideas as how to plot the fluid streamline in solid model?

Kindly someone share ideas please. Thank you

Kummi · November 24, 2019, 06:49

In solid model, I couldn't able to plot the fluid streamline plot. Instead, I need to create a gas (fluid) flow model separately with porous medium and source term.

Quote:

And importantly, in gas flow model, the source term is derived from the solid (pyrolysis) model. It seems to be some kind of coupling between MAIN solid model and GAS model. And the coupling parameter is the source term - gas release rate.

Any kind of such implementation was made in OpenFOAM before?
Correct me if I'm wrong anywhere please.
Thank you

Carlo_P · November 24, 2019, 07:41

Hey Kummi, I'm not sure in what are you interested to simulate.
I think that you will simulate some hot surfaces and the movement of the air depending on the different temperature, correctly?

It is not so simple in OpenFOAM, if you are also interested in the solid.
Otherwise, you can try some solvers that are in tutorials/heatTransfer.

If you are interested also in the solid, I think you have to have a look into precice software: https://www.precice.org

Kummi · November 24, 2019, 08:22

Thank you for your response Carlo. My simulation is not over the hot surfaces.
In my case, I implemented SOLID model - to decompose the COAL known as pyrolysis. As we know that, when the coal decomposes due to heat, the gases will be released in different fashions. In my first step of work, I simulated coal decomposition process and calculated the heat release rates. In my next step, I need to figure out the path of coal decomposed gases - through streamline plot.
Basically, there are 2 different models - Fluid and Solid. In Fluid model, there is a provision to draw streamline plot for gases (air). But in case of solid model, its not possible to plot streamline graph, because there involve only Solid --> no gas (medium).
And so, I am asking Foamers here for some tips. If you have any ideas, share plz..
Thank you

Carlo_P · November 24, 2019, 08:32

Uhm...it is not so simple..you can start having a look into this maybe:
http://www.tfd.chalmers.se/~hani/kur...ChangeFoam.pdf

It simulate the evaporation of water due to temperature. Seems to be "quite" similar.
But I think that your simulation would be a little to complex.

Kummi · November 24, 2019, 09:02

Thank you. I will look into the document.
Hmm.. You are right - seems to be quite complex. Exploring the way to figure out my problem.

November 24, 2019, 08:32		#5
Carlo_P Senior Member Carlo_P Join Date: May 2019 Location: Italy Posts: 176 Rep Power: 8	Uhm...it is not so simple..you can start having a look into this maybe: http://www.tfd.chalmers.se/~hani/kur...ChangeFoam.pdf It simulate the evaporation of water due to temperature. Seems to be "quite" similar. But I think that your simulation would be a little to complex. Kummi likes this.

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November 24, 2019, 07:41		#3
Carlo_P Senior Member Carlo_P Join Date: May 2019 Location: Italy Posts: 176 Rep Power: 8	Hey Kummi, I'm not sure in what are you interested to simulate. I think that you will simulate some hot surfaces and the movement of the air depending on the different temperature, correctly? It is not so simple in OpenFOAM, if you are also interested in the solid. Otherwise, you can try some solvers that are in tutorials/heatTransfer. If you are interested also in the solid, I think you have to have a look into precice software: https://www.precice.org

November 24, 2019, 08:22		#4
Kummi Senior Member Kumaresh Join Date: Oct 2016 Posts: 354 Rep Power: 12	Thank you for your response Carlo. My simulation is not over the hot surfaces. In my case, I implemented SOLID model - to decompose the COAL known as pyrolysis. As we know that, when the coal decomposes due to heat, the gases will be released in different fashions. In my first step of work, I simulated coal decomposition process and calculated the heat release rates. In my next step, I need to figure out the path of coal decomposed gases - through streamline plot. Basically, there are 2 different models - Fluid and Solid. In Fluid model, there is a provision to draw streamline plot for gases (air). But in case of solid model, its not possible to plot streamline graph, because there involve only Solid --> no gas (medium). And so, I am asking Foamers here for some tips. If you have any ideas, share plz.. Thank you

November 24, 2019, 09:02		#6
Kummi Senior Member Kumaresh Join Date: Oct 2016 Posts: 354 Rep Power: 12	Thank you. I will look into the document. Hmm.. You are right - seems to be quite complex. Exploring the way to figure out my problem.