characteristic number
quantity of dimension one formed by combining quantities describing a system or process
keyword density
percentage of times a keyword or phrase appears on a web page compared to the total number of words on the page
Froude number
dimensionless number defined as the ratio of the flow inertia to the external field
Schmidt number
for a fluid, quotient of kinematic viscosity and diffusion coefficient
compressibility factor
correction factor which describes the deviation of a real gas from ideal gas behavior
Ekman number
dimensionless ratio of viscous to Coriolis forces
absorption number
characteristic number for the absorption of gas at a wet surface
Sommerfeld number
characteristic number of hydrodynamic bearings
Rayleigh number
characteristic number of heat transport in fluids
Brinkman number
characteristic number of a fluid for the relation between heat produced by viscosity and heat received from outside by conduction
Clausius number
characteristic number of a fluid for the relation between energy transfer by momentum and by thermal conduction
Laplace number
characteristic number in fluid dynamics
Bodenstein number
ratio of the amount of substance introduced by convection to that introduced by diffusion
Dean number
characteristic number of flows in curved pipes
Bond number
characteristic number in fluid dynamics
coupling constant
parameter describing the strength of a force
Morton number
characteristic number for bubbles or drops in a liquid or gas, respectively, under the influence of gravitational an viscous forces
Taylor number
characteristic number of a shaft rotating in a fluid
Blake number
nondimensional number showing the ratio of inertial force to viscous force
Reynolds number
dimensionless quantity that is used to help predict similar flow patterns in different fluid flow situations
gassing number
dimensionless number
Fourier number for heat transfer
characteristic number for heat transfer into a body
Graetz number for heat transfer
characteristic number for the relation between heat transfer by convection and conduction in a laminar flow in a pipe
Stefan number
characteristic number for the relation between heat and latent heat of a binary mixture undergoing a phase transition
Hagen number
dimensionless number used in forced flow calculations
cosine similarity
measure of similarity between vectors of an inner product space
Atwood number
scaled density difference of two fluids
Cohesion number
dimensionless number in particle technology
lift coefficient
coefficient that relates the lift generated by a lifting body to other parameters
Lewis number
quotient of thermal diffusivity and diffusion coefficient for a fluid
Deborah number
quotient of relaxation time and observation time of viscoelastic fluids
Euler number
dimensionless caracteristic number used in fluid mechanics, defined as the ratio of pressure forces and inertial forces used to characterize losses in a moving fluid
power number
characteristic number for the power of an agitator
Stokes number
characteristic number for particles in a fluid or plasma
Carnot number
theoretical maximum efficiency of a Carnot cycle
Joule magnetic number
quotient of Joule heat and magnetic field energy in a plasma
Lockhart-Martinelli parameter
characteristic number used in two-phase flow calculations
Mach number
ratio of speed of object moving through fluid and speed of sound
Archimedes number
used to determine the motion of fluids due to density differences
capillary number
ratio of viscous drag forces to surface tension in fluids
Biot number for heat transfer
characteristic number for heat transfer by conduction into a body
Sherwood number
in engineering