simulkade / jfvm.jl

A simple finite volume tool for Julia

• 👋 Hi, I’m Ali Eftekhari. My github name is @simulkade, a combination of 'simul' from simulation and 'kade' that -in both Persian and Dutch- refers to a place. My research philosophy is summarized as: 1- work hard to afford to be lazy (i.e. simplify and automate); and 2- any answer is better than no answer.
• 👀 I’m interested in reactive transport, energy and environmental analysis, and [classic] thermodynamics, not necessarily in that order.
• 🌱 I’m currently working as a Senior Researcher at the Technical University of Denmark where I supervise PhD students and develop mathematical models and numerical tools for different geoenergy applications.
• 💞️ I’m looking to collaborate on developing numerical tools for solving systems of differential equations for the simulation of -among others- reactive transport and thermodynamic assessment of processes.
• 📫 You can reach me here on github, or send me an email. Find my contact information at my DTU profile

jfvm.jl's Issues

Problem with 32 bit processors

The lufact! function does not work on 32 bit systems.

A bug in source terms

There is a tiny bug in the constant source terms.

Info about upcoming removal of packages in the General registry

As described in https://discourse.julialang.org/t/ann-plans-for-removing-packages-that-do-not-yet-support-1-0-from-the-general-registry/ we are planning on removing packages that do not support 1.0 from the General registry. This package has been detected to not support 1.0 and is thus slated to be removed. The removal of packages from the registry will happen approximately a month after this issue is open.

To transition to the new Pkg system using Project.toml, see https://github.com/JuliaRegistries/Registrator.jl#transitioning-from-require-to-projecttoml.
To then tag a new version of the package, see https://github.com/JuliaRegistries/Registrator.jl#via-the-github-app.

If you believe this package has erroneously been detected as not supporting 1.0 or have any other questions, don't hesitate to discuss it here or in the thread linked at the top of this post.

Could please help to solve this problem?

Could you please help to solve it in Julia ?
I can do it in ansys fluent , but I want learn Julia.

oscillating flow through pipe (2D)
it is a transient compressible, viscous 2D flow problem. also, conventional heat transfer considers from the pipe wall.
it is a convention diffusion problem. at both ends, there are porous heat exchangers.

Thank you

"full" not defined in reshapeCell and reshapeInternalCell

Attempts to use reshapeCell or reshapeInternalCell result in an error of:

ERROR: LoadError: UndefVarError: full not defined
Stacktrace:
 [1] reshapeCell(m::MeshStructure, phi::CellValue)
   @ JFVM D:\Programs\Julia-1.6.1\.julia\packages\JFVM\v1vqd\src\JFVMtools.jl:330

my temporary (and quite poor) workaround to this is:

Ti = internalCells(T)
        Ti = [Ti[1,1:end]';Ti;Ti[end,1:end]']
        Ti = [Ti[1:end,1] Ti Ti[1:end,end]]
        T = createCellVariable(m,Ti)

So that I may use the cellvariable T (which is a solution from solving a PDE) in functions that are dependant on T, but return errors when operating on the ghost values of T.

I will look into a better fix & branch it later this week.

Thanks.

"solvePDE" function broken

It seems the "solvePDE" set of functions cause my terminal to crash when attempting to solve a PDE. The error I receive is:

The terminal process "D:\Programs\Julia-1.8.0\bin\julia.exe '--color=yes', '--startup-file=no', '--history-file=no', '--project=d:\Github\CRUD.jl', 'c:\Users\sa8416.vscode\extensions\julialang.language-julia-1.7.6\scripts\debugger\run_debugger.jl', '\.\pipe\vsc-jl-dbg-9aa81c39-1399-435d-9fb6-f07804f28e12', '\.\pipe\vsc-jl-cr-e272cddf-e589-4ef3-9716-a35a7693db3e'" terminated with exit code: 1.

Edit: It seems the issue lies in the matrix of coefficients 'M' being a sparse matrix, temporary fix is to convert it to a dense matrix:

x=(collect(M))\RHS

Will it be updated to fit Julia v1.5 ?

The given examples failed in Julia v1.5.2.

Julia wrapper for SU2 (The Open-Source CFD Code) (Stanford University Unstructured)

Python wrapper is available for SU2 (The Open-Source CFD Code).
Please provide Julia wrapper for SU2.
SU2 is a suite of open-source software tools written in C++ for the numerical solution of partial differential equations and performing PDE-constrained optimization.

There is no package for CFD in Julia. SU2 is good access for Julia.

could you forward it to the correct group to get more attention?

Support for 3D spherical coordinate

Some functions must be written for 3D spherical coordinate (r, \theta, \phi)

Run femtocleaner

Run femtocleaner

Cylindrical1D version of Nonlinear PDE example

I am trying to convert the Nonlinear PDE example (https://nbviewer.jupyter.org/github/simulkade/JFVM.jl/blob/master/examples/solving-nonlinear-pdes-with-fvm.ipynb) to a Cylindrical1D mesh. The left (r=0) boundary is the standard (a=1,b=0,c=0) while the right boundary is a Robin BC. It appears that the Robin BC is working, but the left boundary holds the value (acts like a Dirichlet boundary) instead of allowing phi to drop. Perhaps I'm missing something in the conversion? The script is attached here:
FV_polygon1Dradial.jl.zip

The output of the script looks like:

But should look something more like:

A question on 1D transient-diffusion problem

In fliud flow, is this method still appropriate for curve path? That is to say , if the one-dimensional mesh is polyline, is the transient-diffusion still applicable? My purpose is studying the water pressure of the polyline/curve crack path,like the black simplified crack paths in the picture. I want to know whether I can treat the polyline as a straight line to solve the transient-diffusion problem?