Bejan number
English
editEtymology
editNamed after Adrian Bejan.
Noun
editBejan number (plural Bejan numbers)
- (thermodynamics) A dimensionless number: the ratio of heat transfer irreversibility to total irreversibility due to heat transfer and fluid friction: , where is the entropy generation contributed by heat transfer and is the entropy generation contributed by fluid friction.
- (fluid dynamics) A dimensionless number: the pressure drop along the fluid path length in both external flows and internal flows: , where is the dynamic viscosity, is the momentum diffusivity (or Kinematic viscosity) and is fluid path length.
Further reading
edit- Bejan number on Wikipedia.Wikipedia