Thermal conductivity (k) is a material property that measures how well a material conducts heat. It quantifies the ability of a substance to transfer thermal energy through conduction. In other words, it describes how easily heat flows through a material when there is a temperature gradient.
- k is the thermal conductivity
- μ is the molecular viscosity of the fluid
- cp is the specific heat capacity of the fluid at constant pressure
- Pr is the Prandtl number.