Where PLIC stores the area of Interface in openfoam?

saicharan662000@gmail.com · January 5, 2022, 01:45

Hello guys,
I am new to openfoam. I read in a paper that PLIC slices and stores the end points of interface then calculates the interface length(2D) or interface area(3D). Can anyone please tell me where the interface area is stored after the interface cell is sliced by PLIC code

.
It's urgent
Thanks in advance

saicharan662000@gmail.com · January 7, 2022, 00:00

If anyone gets same doubt You can see this.
In interface properties u can find the variable that stores interface area.

Cell gradient of alpha
const volVectorField gradAlpha(fvc::grad(alpha1_, "nHat"));
Interpolated face-gradient of alpha
surfaceVectorField gradAlphaf(fvc::interpolate(gradAlpha));
Face unit interface normal
surfaceVectorField nHatfv(gradAlphaf/(mag(gradAlphaf) + deltaN_));
Face unit interface normal flux
nHatf_ = nHatfv & Sf;

So interface area is stored in variable called nHatf_ which is a private member.

Screenshot from 2022-01-06 15-59-16.png

January 5, 2022, 01:45	Where PLIC stores the area of Interface in openfoam?	#1
saicharan662000@gmail.com Member hari charan Join Date: Sep 2021 Location: India,hyderabad Posts: 97 Rep Power: 5	Hello guys, I am new to openfoam. I read in a paper that PLIC slices and stores the end points of interface then calculates the interface length(2D) or interface area(3D). Can anyone please tell me where the interface area is stored after the interface cell is sliced by PLIC code. It's urgent Thanks in advance

January 7, 2022, 00:00	Variable that stores interface area.	#2
saicharan662000@gmail.com Member hari charan Join Date: Sep 2021 Location: India,hyderabad Posts: 97 Rep Power: 5	If anyone gets same doubt You can see this. In interface properties u can find the variable that stores interface area. Cell gradient of alpha const volVectorField gradAlpha(fvc::grad(alpha1_, "nHat")); Interpolated face-gradient of alpha surfaceVectorField gradAlphaf(fvc::interpolate(gradAlpha)); Face unit interface normal surfaceVectorField nHatfv(gradAlphaf/(mag(gradAlphaf) + deltaN_)); Face unit interface normal flux nHatf_ = nHatfv & Sf; So interface area is stored in variable called nHatf_ which is a private member. Screenshot from 2022-01-06 15-59-16.png spockkk likes this. Last edited by saicharan662000@gmail.com; January 19, 2022 at 05:24.

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