Definition
The Chandrasekhar number is usually denoted by the letter, and is motivated by a dimensionless form of the Navier-Stokes equation in the presence of a magnetic force in the equations of magnetohydrodynamics:
where is the Prandtl number, and is the magnetic Prandtl number.
The Chandrasekhar number is thus defined as :
where is the magnetic permeability, is the density of the fluid, is the kinematic viscosity, and is the magnetic diffusivity. and are a characteristic magnetic field and a length scale of the system respectively.
It is related to the Hartmann number, by the relation:
Read more about this topic: Chandrasekhar Number
Famous quotes containing the word definition:
“I’m beginning to think that the proper definition of “Man” is “an animal that writes letters.””
—Lewis Carroll [Charles Lutwidge Dodgson] (1832–1898)
“... we all know the wag’s definition of a philanthropist: a man whose charity increases directly as the square of the distance.”
—George Eliot [Mary Ann (or Marian)
“According to our social pyramid, all men who feel displaced racially, culturally, and/or because of economic hardships will turn on those whom they feel they can order and humiliate, usually women, children, and animals—just as they have been ordered and humiliated by those privileged few who are in power. However, this definition does not explain why there are privileged men who behave this way toward women.”
—Ana Castillo (b. 1953)