How to use Matlab to couple Phreeqc and COMSOL

I want to use Matlab to couple Phreeqc and COMSOL, and I can call both software to write code. How to use Matlab to perform geochemical processing in Phreeqc and then import the data into COMSOL for physical analysis

Answer 1

[Prasanna]

Hi Peng,

You can use MATLAB to connect Phreeqc and COMSOL by following these steps:

• Install the ‘IPhreeqcCOM’ module, which gives Phreeqc a COM server interface.
• You can call Phreeqc from MATLAB by using the installed IPhreeqcCOM modeule. A sample code to create an instance for the same is as below:

% Create an instance of the IPhreeqcCOM object 
phreeqc = actxserver('IPhreeqcCOM.Object'); 

% Load a Phreeqc input file 
phreeqc.LoadDatabase('phreeqc.dat'); 
phreeqc.RunFile('example.phr'); 

% Retrieve results 
results = phreeqc.GetSelectedOutputArray(); 

• This enables geochemical processing to be carried out within MATLAB. After that, you may retrieve the geochemical model from the Phreeqc input file using MATLAB. The Phreeqc processed data can be saved in a COMSOL-readable format (such as CSV or txt). Then, we can read this data in MATLAB, import it into COMSOL, and utilize COMSOL to do physical analysis.

You may efficiently connect Phreeqc and COMSOL using Matlab to carry out integrated geochemical and physical assessments by following these procedures. For more information, you can refer the following:

• Interact PHREEQC with MATLAB: https://www.mathworks.com/matlabcentral/answers/463066-how-to-interface-phreeqc-with-matlab
• COMSOL-PhreeqC Interace: https://www.comsol.com/paper/coupling-multiphysics-with-geochemistry-the-comsol-phreeqc-interface-13236

Hope this helps!