rayleigh number
31Natural convection — Bénard cells. Natural convection is a mechanism, or type of heat transport, in which the fluid motion is not generated by any external source (like a pump, fan, suction device, etc.) but only by density differences in the fluid occurring due to… …
32Heat transfer — is a discipline of thermal engineering that concerns the exchange of thermal energy from one physical system to another. Heat transfer is classified into various mechanisms, such as heat conduction, convection, thermal radiation, and phase change …
33fluid mechanics — an applied science dealing with the basic principles of gaseous and liquid matter. Cf. fluid dynamics. [1940 45] * * * Study of the effects of forces and energy on liquids and gases. One branch of the field, hydrostatics, deals with fluids at… …
34Lorenz attractor — The Lorenz attractor, named for Edward N. Lorenz, is a 3 dimensional structure corresponding to the long term behavior of a chaotic flow, noted for its butterfly shape. The map shows how the state of a dynamical system (the three variables of a… …
35Electrohydrodynamics — (EHD), also known as electro fluid dynamics (EFD) or electrokinetics, is the study of the dynamics of electrically conducting fluid. It is the study of the motions of ionised particles or molecules and their interactions with electric fields and… …
36Dimensionless quantity — In dimensional analysis, a dimensionless quantity or quantity of dimension one is a quantity without an associated physical dimension. It is thus a pure number, and as such always has a dimension of 1.[1] Dimensionless quantities are widely used… …
37Convection — This figure shows a calculation for thermal convection in the Earth s mantle. Colors closer to red are hot areas and colors closer to blue are cold areas. A hot, less dense lower boundary layer sends plumes of hot material upwards, and likewise,… …
38Dynamo theory — In geophysics, dynamo theory proposes a mechanism by which a celestial body such as the Earth or a star generates a magnetic field. The theory describes the process through which a rotating, convecting, and electrically conducting fluid can… …
39Boussinesq approximation (buoyancy) — In fluid dynamics, the Boussinesq approximation (named for Joseph Valentin Boussinesq) is used in the field of buoyancy driven flow (also known as natural convection). It states that density differences are sufficiently small to be neglected,… …
40Double diffusive convection — is an important fluid dynamics topic that describes a form of convection driven by two different density gradients which have different rates of diffusion.[1] Convection in fluids is driven by density variation within them. These density… …
