Darcy's Law - Intro

[@virtualshadow1]

This lecturer is wonderful. He made things so simple to understand.

[@groundwatermodeling]

Thank you!

[@qadrmuhamad6706]

Thanks!

[@normjones]

You are welcome.

[@lalualiyyatirangga6466]

Thank you for the provided material. It was exceptional. I have a question: How do we distinguish between seepage velocity and hydraulic conductivity when they share the same dimensions and units? Both terms are applied in cases of porous media

[@groundwatermodeling]

Thanks for the kind note. Yes, hydraulic conductivity has the same units as velocity (length per time). The reason is that hydraulic conductivity (K) is a scaling constant that is used to define flow velocity as a function of the hydraulic gradient (v = ki, or v = k*(dh/dl)) where i = dh/dl = hydraulic gradient. The hydraulic gradient is unitless because it is length/length. That doesn't mean that K is a velocity, it just means that it is used to convert a dimensionless term to velocity. Does that make sense?

[@lalualiyyatirangga6466]

@@groundwatermodeling Thanks for explaining! So, hydraulic conductivity acts as a scaling constant to convert a dimensionless term to velocity. That makes sense now. Appreciate the clarification!