Thermal Diffusivity in Heat Transfer Formulas

Thermal diffusivity is the thermal conductivity divided by density and specific heat capacity at constant pressure. And is denoted by α. Thermal Diffusivity is usually measured using the Square Meter Per Second for Diffusivity. Note that the value of Thermal Diffusivity is always negative.

Heat Transfer formulas that make use of Thermal Diffusivity

fxFourier NumberGo

fxTemperature Response of Instantaneous Energy Pulse in Semi Infinite SolidGo

fxTemperature Response of Instantaneous Energy Pulse in Semi Infinite Solid at SurfaceGo

fxPrandtl Number using DiffusivitiesGo

FAQ

What is the Thermal Diffusivity?

Thermal diffusivity is the thermal conductivity divided by density and specific heat capacity at constant pressure. Thermal Diffusivity is usually measured using the Square Meter Per Second for Diffusivity. Note that the value of Thermal Diffusivity is always negative.

Can the Thermal Diffusivity be negative?

Yes, the Thermal Diffusivity, measured in Diffusivity can be negative.

What unit is used to measure Thermal Diffusivity?

Thermal Diffusivity is usually measured using the Square Meter Per Second[m²/s] for Diffusivity. Square Centimeter Per Second[m²/s], Square Millimeter per Second[m²/s] are the few other units in which Thermal Diffusivity can be measured.

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