The properties of the filter material, such as its pore size, thickness, and permeability, influence the flow rate of the water and the extraction of the coffee solids. A filter with a smaller pore size will result in a slower flow rate and a more efficient extraction of the coffee solids, while a filter with a larger pore size will result in a faster flow rate and a less efficient extraction.
| Section | Content | |---------|---------| | Abstract | Summary of model coupling fluid flow and extraction | | Introduction | Review of brewing methods (V60, Chemex, batch brew) | | Mathematical Model | Coupled PDEs for flow and transport | | Numerical Simulation | FEniCS/OpenFOAM code results | | Experimental Validation | Conductivity and extraction yield measurements | | Discussion | Channeling, fines migration, and uniformity | the physics of filter coffee pdf full