Kozeny Carman implementation


I can see that Kozeny-Carman equation is implemented in OGS 6 but I am still unable to figure out how to assign permeability as a variable in the input and view the results of change in permeability as an output. Can you please help me on this? Many thanks in advance.

Thanks and Regards,
Harish R

Dear Harish,

Two input parameters - initial porosity and initial medium permeability - are required to use Kozeny-Carman porosity-permeability relationship (see OGS: [case] KozenyCarman for detailed usage documentation). The ConTracer test case you mentioned has demonstrated how to use the Kozeny-Carman equation. In this test case, the required input parameters both are given under the subtree <parameters>. Please scroll down the project file to take a look.

For the time-series output of permeability change, you can do that with a slight change in the member function ComponentTransportProcess::computeSecondaryVariableConcrete (see
ProcessLib/ComponentTransport/ComponentTransportProcess.cpp · master · ogs / ogs · GitLab).

Best regards,