👉 Undflow is a term used in fluid dynamics to describe the flow of water or other fluids through a porous medium. It refers to the movement of liquid particles and gases within an enclosed space, such as a pipe, tank, or channel. Undflows are typically characterized by their high velocity and low pressure. They occur when the volume of the fluid passing through a pore in a porous medium is significantly less than the volume of the fluid being carried out of the same pore. This results from the high
