I'm implementing an equation for particle drag. what is the macros to call gas phase properties of the cell in which particle is in.
Is there a list for these macros?
From your question I assume that your particles are liquid or solid and they move through a gaseous continous phase, right? Furthermore, I assume that you use ANSYS Fluent, but cannot be sure. Could you please share more details about the drag law you want to use?
Also, which UDF function for the modified drag do you want to apply? If you use the DEFINE_DPM_DRAG(name,Re,p) function Fluent passes the Reynolds number based on the particle diameter and relative velocity to your udf and you don't need the continuous phase properties.
In general, the cell properties in Fluent can be accessed through cell macros, e.g. C_MU_L(c,t) for the laminar viscosity and C_R(c,t) for the density. More detailed descriptions can be found in the UDF manual from Fluent, which is available for download at http://148.204.81.206/Ansys/150/ANSYS%20Fluent%20UDF%20Manual.pdf. (this is for the release 15.0, but it hasn't changed much during the last couple of releases). However, I'm not sure how to get information about the specific cell your particle is in, which would be required for the cell macros.
Hope this helps to get started.
Best regards,
Stephan
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