Question

In Darcy’s equation, the constant \( K \), which is the property of the media, is called:

• A. Density
• B. Dynamic Viscosity
• C. Kinematic Viscosity
• D. Intrinsic Permeability

Hint:

Intrinsic permeability is a property of the medium, while hydraulic conductivity depends on both the medium and fluid properties.

Answer 1

The Correct Option is D

Step 1: Understanding Darcy’s Law
Darcy’s law describes the flow of a fluid through a porous medium: \[ Q = K A \frac{\Delta H}{L} \] where: - \( K \) = Hydraulic conductivity (m/s) - \( A \) = Cross-sectional area - \( \Delta H \) = Hydraulic head difference - \( L \) = Length of flow path
Step 2: Identifying the Correct Option
- Density: Refers to mass per unit volume, not permeability. - Dynamic Viscosity: Relates to fluid resistance, not media property. - Kinematic Viscosity: Ratio of viscosity to density, irrelevant to Darcy’s equation. - Intrinsic Permeability: Represents the ability of a porous medium to transmit fluids, making it the correct answer.