If you need peer-reviewed academic papers on the fluid dynamics and extraction of filter coffee, consider these resources: "Brewing of filter coffee" (ResearchGate)
[ Q = \frack \cdot A \cdot \Delta P\mu \cdot L ] the physics of filter coffee pdf full
While this article is a complete guide, readers seeking a formal academic should search for: If you need peer-reviewed academic papers on the
to describe how water moves through a static coffee bed. It explains the "rapid extraction" from the surface of grains followed by "slow extraction" from the interior. "Uneven extraction in coffee brewing" (AIP Publishing) : Published in Physics of Fluids , this study explores why grinding this study explores why grinding