In fluid mechanics, the Rayleigh number (Ra, after Lord Rayleigh) for a fluid is a dimensionless number associated with buoyancy-driven flow, also known...

the Rayleigh number (a dimensionless number associated with natural convection), Rayleigh flow, the Rayleigh–Taylor instability, and Rayleigh's criterion...

In fluid thermodynamics, Rayleigh–Bénard convection is a type of natural convection, occurring in a planar horizontal layer of fluid heated from below...

the absolute value of the complex number is Rayleigh-distributed. The probability density function of the Rayleigh distribution is f ( x ; σ ) = x σ 2...

motionless fluid. It is a dimensionless number, closely related to the fluid's Rayleigh number.: 466  A Nusselt number of order one represents heat transfer...

temperature (constant) p is the pressure (constant). The Rayleigh number, shown below, is a dimensionless number that characterizes convection problems in heat...

different correlations involving the Rayleigh Number (a function of both the Grashof number and the Prandtl number) must be used. Note that the above equation...

Rayleigh may refer to: Rayleigh scattering Rayleigh–Jeans law Rayleigh waves Rayleigh (unit), a unit of photon flux named after the 4th Baron Rayleigh...

\alpha } is the thermal diffusivity The Be number plays in forced convection the same role that the Rayleigh number plays in natural convection. In the context...

Rayleigh /ˈreɪliː/ is a market town and civil parish in the Rochford District in Essex, England; it is located between Chelmsford and Southend-on-Sea,...

Hartmann number,   H a {\displaystyle \ Ha} , by the relation: Q   =   H a 2   {\displaystyle Q\ {=}\ Ha^{2}\ } Rayleigh number Taylor number N.E. Hurlburt...

temperature gradient may be formed and convection might be very strong. The Rayleigh number ( R a {\displaystyle \mathrm {Ra} } ) is the product of the Grashof...

4 for air) The formula to compute Mach number in a supersonic compressible flow is derived from the Rayleigh supersonic pitot equation: p t p = [ γ +...

In fluid dynamics, Rayleigh flow (after English physicist Lord Rayleigh) refers to frictionless, non-adiabatic fluid flow through a constant-area duct...

Rayleigh scattering (/ˈreɪli/ RAY-lee) is the scattering or deflection of light, or other electromagnetic radiation, by particles with a size much smaller...

form of convection can be correlated with a dimensionless magnetic Rayleigh number. Subsequently, this group explained that fluid motion occurs due to...

is the Rayleigh number, E the Ekman number, Pr and Pm the Prandtl and magnetic Prandtl number. Magnetic field scaling is often in Elsasser number units...

}}\right)^{2}} ⁠.) The most generally used dimensionless number would be the Richardson number and Rayleigh number. The mathematics of the flow is therefore simpler...

diagonals give common symbols for the quantities, and the given dimensionless number is the ratio of the left column quantity over top row quantity; e.g. Re...

small. The value that quantifies this property, θ, which is given by the Rayleigh criterion, is low for a system with a high resolution. The closely related...

Rayleigh waves are a type of surface acoustic wave that travel along the surface of solids. They can be produced in materials in many ways, such as by...

the Rayleigh number with respect to this length and Pr is the Prandtl number (the Rayleigh number can be written as the product of the Grashof number and...

Rayleigh fading is a statistical model for the effect of a propagation environment on a radio signal, such as that used by wireless devices. Rayleigh...

Rayleigh and Brace Rayleigh bandwidth Rayleigh beamwidth Rayleigh–Carson reciprocity Rayl, rayl or Rayleigh Rayleigh–Faber–Krahn inequality Rayleigh–Jeans...

In optics and especially laser science, the Rayleigh length or Rayleigh range, z R {\displaystyle z_{\mathrm {R} }} , is the distance along the propagation...

The Rayleigh–Taylor instability, or RT instability (after Lord Rayleigh and G. I. Taylor), is an instability of an interface between two fluids of different...

In fluid dynamics, the Plateau–Rayleigh instability, often just called the Rayleigh instability, explains why and how a falling stream of fluid breaks...

σ, ρ, and β are system parameters proportional to the Prandtl number, Rayleigh number, and certain physical dimensions of the layer itself. The Lorenz...

Reynolds number is below 0.01 and the flow is laminar. The onset of instability in these flows is best described as an electric "Rayleigh number". Liquids...

standard for colour matching Ralte language (ISO 639 code ral) RaL, the Rayleigh number w.r.t. length; see heat transfer coefficient respectful adoption language...