Any experiment in Heterogeneous medium when being performed and analyzed needs a theoretical model to understand it. Those analogs of modeling used for homogeneous medium are not applicable for heterogeneous media. The way of heterogeneous media experiments treatment based on the VAT mathematics is in its initial stage now. Still, few methodologies have been developed for the particular purposes using the VAT -
Analysis of Pressure Loss Homogeneous Experimental Data or Porous Media Morphologies Based on VAT (125K)

LDV MEASUREMENTS OF THE VELOCITY FIELD WITHIN A RIBBED INTERNAL DUCT FLOW ( 76K)

INVESTIGATION OF THE REYNOLDS STRESS AND VELOCITY FIELD IN A RIB ROUGHENED CHANNEL USING LASER DOPPLER VELOCIMETRY (627K)

More on heterogeneous VAT experiments see in ..\Experimental Science in Heretogeneous Media