Prandtlszámokkal
Prandtlszámokkal, often referred to as the Prandtl number, is a dimensionless group that describes the ratio of momentum diffusivity to thermal diffusivity in a fluid. It is defined as the product of the dynamic viscosity and the specific heat capacity at constant pressure, divided by the thermal conductivity of the fluid. Mathematically, it is represented by the symbol Pr and is given by the equation Pr = (μ * Cp) / k, where μ is the dynamic viscosity, Cp is the specific heat capacity at constant pressure, and k is the thermal conductivity.
The Prandtl number is a crucial parameter in the study of convective heat transfer. It helps to
The value of the Prandtl number varies significantly with the fluid and its temperature. For example, gases