Bejan number
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English
[edit]Etymology
[edit]Named after Adrian Bejan.
Noun
[edit]Bejan 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