How to change equation of state

Diego_Bindoni · January 17, 2025, 02:47

Good morning,
i'm performing a LES simulation of a round jet in seawater, using OpenFOAMv12. Hence, i would like to change the equation of state from the default one to the actual one for seawater (depends on temperature and pressure, and is a bit complicated and long). Do you know how can i code this? Any of you have a template or a similar example from which i could learn?

Thanks in advance for your help, and let me know if i can provide further information.

Diego

ErenC · March 7, 2025, 01:59

It's easy! Here is the equation of state models:
openfoam>src>>thermophysicalModels>specie>equation OfState

You can create a new folder here and code your own EOS. After that you need to define the new EOS in few places for your compiler to recognize.

einstein_zee · March 23, 2025, 16:25

Hi there,

If you need a simple implementation example and wanna know how things work, you may watch this video https://youtu.be/jJHOeDZJUrU .

January 17, 2025, 02:47	How to change equation of state	#1
Diego_Bindoni New Member Diego Bindoni Join Date: Oct 2022 Posts: 17 Rep Power: 4	Good morning, i'm performing a LES simulation of a round jet in seawater, using OpenFOAMv12. Hence, i would like to change the equation of state from the default one to the actual one for seawater (depends on temperature and pressure, and is a bit complicated and long). Do you know how can i code this? Any of you have a template or a similar example from which i could learn? Thanks in advance for your help, and let me know if i can provide further information. Diego

March 7, 2025, 01:59		#2
ErenC Member Eren Join Date: Aug 2018 Posts: 92 Rep Power: 9	It's easy! Here is the equation of state models: openfoam>src>>thermophysicalModels>specie>equation OfState You can create a new folder here and code your own EOS. After that you need to define the new EOS in few places for your compiler to recognize. Diego_Bindoni likes this.

March 23, 2025, 16:25		#3
einstein_zee Member Hosein Join Date: Nov 2011 Location: Germany Posts: 99 Rep Power: 15	Hi there, If you need a simple implementation example and wanna know how things work, you may watch this video https://youtu.be/jJHOeDZJUrU . Diego_Bindoni likes this.

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