[dplamp]

My case involves heat and mass transfer (of some alcohol in an air stream). I modified scalarTransportFoam to add mass transfer in the form of a new scalar field called "C".



Now, I want to calculate, for every point in the mesh, the pressure of the vapor, the saturation pressure and ultimately the ratio of the two. These calculations involve exponential functions, with T and C as entry parameters.


I could not find any scalar field operators to do that. I was wondering if the sample utility combined with some external code (C or Python) could help me do that ?

[joshm]

Originally Posted by dplamp

My case involves heat and mass transfer (of some alcohol in an air stream). I modified scalarTransportFoam to add mass transfer in the form of a new scalar field called "C".



Now, I want to calculate, for every point in the mesh, the pressure of the vapor, the saturation pressure and ultimately the ratio of the two. These calculations involve exponential functions, with T and C as entry parameters.


I could not find any scalar field operators to do that. I was wondering if the sample utility combined with some external code (C or Python) could help me do that ?

You could write a filed function object which uses that new scalar field. Checkout src/functionObjects/field/ for some examples.

[dplamp]

Hi


I found a solution that suits me better than function objects : the post processing sampling utility, to sample scalar fields on a plane. Then, I can easily manipulate the data and do whatever calculation and plots I want, in my case with Python.


D.