Reference Mass concentration in Density flow-transport model

Hi all.
I’m starting with density transport modeling.
I have a very deep zone with salted water, in a very low permeability aquifer. The upper zone contains fresh water in an also low K system. The objective is study how the dense water in lower system moves toward the upper system, maybe by some structures. 

My understanding is that the Reference Mass Concentrations is that measured  in the field where the K was measured. Which value I should use if I have two different values and FEFLOW 5.0 used only 1. Does the new feflow version have the possibility to use different values?


thanks

Hello Carolina Vera,

the Reference Mass Concentration or Contaminant mass mean the concentration of the contaminant in the water in ppm. In your case, the concentration of salt, which you will define at the boundaries or for the lower zone in the mass initials. FEFLOW will take these values for the Reference Mass Concentration to calculate the change of the K-value (permeability, conductivity).

(It is only necessary in cases where the concentration of the contaminant (salt) is high enough to change the viscosity and density of the water sustainable.

greeting Robert