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How to edit pre-defined equations, such as Navier-stokes?
Posted Jul 9, 2022, 5:32 a.m. EDT Computational Fluid Dynamics (CFD), Porous Media Flow, Physics Interfaces Version 6.0 2 Replies
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Hello all,
Briefly, i'm designing a hydrogen storage tank, which has porous metal hydride bed inside.
For the momentum conservation at the porous area, I need to use the given equation below.
It seems that physics interface of "Brinkman Equation" gives a similar form of Navier-stokes equation. However, I need to remove a certain term as I marked in the image below so that the equation to be exactly same shown above.
I am aware of the "Equation View" option, but still got stuck... or shall I use the equation-based modelling such as Mathematics physics interface?
Many thanks in advance.
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Make sure you have a geometry associated with the physics first. Then go to the physics node and modify the weak form of it. You will get a padlock symbol on that node to indicate that something has changed.
-------------------René Christensen, PhD
Acculution ApS
www.acculution.com
info@acculution.com
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Hello René,
Thank you for the reply. I found the equation at the weak expression table. In order to change 'only' the pre-defined equation, am I supposed to modify the expression in the weak expression only? Not the variables?