- viscosity temperature number
- Техника: температурный показатель вязкости
Универсальный англо-русский словарь. Академик.ру. 2011.
viscosity temperature number
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Viscosity — For other uses, see Viscosity (disambiguation). Viscosity The substance above has lower viscosity than the substance below SI symbol: μ, η SI unit: Pa·s … Wikipedia
viscosity — [vis käs′ə tē] n. pl. viscosities [ME viscosite < ML viscositas] 1. the state or quality of being viscous 2. a) Physics the internal friction of a fluid which makes it resist flowing past a solid surface or other layers of the fluid: symbol, η … English World dictionary
viscosity — [1] A measure of an oil s ability to pour or be thick. Every container of oil is marked with the viscosity of the oil. Straight weight (also called single viscosity or single weight ) oil has a single number like 30 weight. A lower number means… … Dictionary of automotive terms
viscosity index — noun : an arbitrary number assigned as a measure of the constancy of the viscosity of a lubricating oil with change of temperature such that a high index indicates that the viscosity changes little with temperature * * * Auto., Mach. an arbitrary … Useful english dictionary
viscosity index — noun Date: 1929 an arbitrary number assigned as a measure of the constancy of the viscosity of a lubricating oil with change of temperature with higher numbers indicating viscosities that change little with temperature … New Collegiate Dictionary
Nusselt number — In heat transfer at a boundary (surface) within a fluid, the Nusselt number is the ratio of convective to conductive heat transfer across (normal to) the boundary. Named after Wilhelm Nusselt, it is a dimensionless number. The conductive… … Wikipedia
Rayleigh number — In fluid mechanics, the Rayleigh number for a fluid is a dimensionless number associated with buoyancy driven flow (also known as free convection or natural convection). When the Rayleigh number is below the critical value for that fluid, heat… … Wikipedia
Grashof number — The Grashof number mathrm{Gr} is a dimensionless number in fluid dynamics and Heat Transfer which approximates the ratio of the buoyancy to viscous force acting on a fluid. It frequently arises in the study of situations involving natural… … Wikipedia
Glass transition temperature — The glass transition temperature, T g, is the temperature at which an amorphous solid, such as glass or a polymer, becomes brittle on cooling, or soft on heating. More specifically, it defines a pseudo second order phase transition in which a… … Wikipedia
Brinkman number — The Brinkman Number is a dimensionless group related to heat conduction from a wall to a flowing viscous fluid, commonly used in polymer processing. There are several definitions; one is N {Br} = frac {eta U^2}{kappa(T w T 0)} Where * NBr = the… … Wikipedia
Turbulent Prandtl number — The turbulent Prandtl number (Pr t) is a non dimensional term defined as the ratio between the momentum eddy diffusivity and the heat transfer eddy diffusivity. It is useful for solving the heat transfer problem of turbulent boundary layer flows … Wikipedia
