C
Capillary number
The capillary number represents the relative effect of viscous drag forces versus surface tension forces acting across an interface between a liquid and a gas, or between two immiscible liquids. It is represented as:
B
Brinkman number
Brinkman number is the ratio between heat produced by viscous dissipation and heat transported by molecular conduction.
B
Bond number
In fluid dynamics the, Bond number (Bo) is the ratio of gravitational to capillary forces. It is also called Eötvös number (Eo).
B
Blake Number
The Blake number is the ratio of inertial force to viscous force. It is used in momentum transfer and for the flow of fluid through a solid bed.
B
Biot number
The Biot number (Bi) is the ratio of the thermal resistances inside of a body and at the surface of a body. The Biot number is defined as: Characteristic length can be estimated as:
B
Bejan number
Bejan number used in thermodynamics and fluid mechanics. Thermodynamics Dejan Number The Bejan number is the ratio of heat transfer irreversibility to total irreversibility due to heat transfer and fluid friction. It can be represented by: Heat Transfer Bejan Number The Bejan number is the dimensionless pressure drop along a Read more…
A
Atwood number
It is a dimensionless number in use in fluid dynamics for the study of hydrodynamic instabilities in density stratified flows. It is defined as: While L and H refer to heavier and lighter fluid respectively. It is an important parameter in the study of Rayleigh–Taylor instability and Richtmyer–Meshkov instability.
A
Archimedes number
The Archimedes number is a dimensionless number used to determine the motion of fluids due to density differences. It is named after the ancient Greek scientist and mathematician Archimedes. Archimedes number is the ratio of gravitational forces to viscous forces and can be written as: