How to calculate the apparent viscosity in porous media(the flow that has shear and elongation flow)?

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Xuqi Lin

To measure the viscosity of a porous medium, experiments are often required to determine the apparent viscosity of the fluid in the porous medium. Here's one possible way to do this:

Prepare the experimental setup:Prepare a porous media sample, making sure that the sample has a known porosity and porosity. Prepare fluids, usually using water or other fluids as the experimental medium. Prepare equipment for measuring viscosity, such as a viscometer or rotational rheometer.

Measure the viscosity of a fluid:In the absence of porous media, measure the viscosity of the fluid using a viscometer or rheometer. This will be the actual viscosity of the fluid (( \mu_f )).

Measuring apparent viscosity in porous media:Place a porous media sample into the fluid to ensure that the fluid is able to penetrate the porous medium. Use the same viscometer or rheometer to measure the apparent viscosity in porous media. According to the Kozeny-Carman equation, the apparent viscosity in porous media is calculated and determined.

Analysis Results:Analyze the relationship between the apparent viscosity and the actual viscosity of the fluid in a porous medium based on experimental data and calculated results. This helps to understand the effect of porous media on fluid flow properties.

With this experimental method, the apparent viscosity in porous media can be measured and the hydrodynamic properties of porous media can be further investigated. Please note that experimental methods may vary on a case-by-case basis, and it is recommended to carefully design the protocol and ensure the accuracy of the experimental operation before performing the experiment.

Mohammadreza Kord

Thank dear Xuqi

So for calculating the apparent viscosity in experimental articles, we just can use the viscometer or rheometer, right?

I'm working on numerical simulations and simulating the fluid in wavy channel (porous media ) and i need to calculate the apparent viscosity in this porous media with the equations and the equation that is used in the (chauveteau 1981) is carreau model.

I need help in thia respect.

Hi，

I mainly do application work, and this literature may be helpful to you.

A Comprehensive Combination of Apparent and Shear Viscoelastic Data during Polymer Flooding for EOR Evaluations.

Than dear friend Xuqi