Fluid Dynamics2026-04-061 minarXiv:2604.04779expressHow a Soft Lid Changes the FlowInside the kidneys, liver, and other organs, fluid flows through channels that squeeze and release like a hose underfoot. The walls of these channels are not rigid: they are porous, elastic, and soaked with moisture.Avery Trevino·Roberto Zenit·Mauro Rodriguez JrJames Clerk MaxwellviscosityturbulenceStochastic modeling👍👎☆SimplePopularAdvanced