# dimensionless number

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Related to dimensionless number: Biot number

## dimensionless number

[də′men·chən·ləs ′nəm·bər]
(mathematics)
A ratio of various physical properties (such as density or heat capacity) and conditions (such as flow rate or weight) of such nature that the resulting number has no defining units of weight, rate, and so on. Also known as nondimensional parameter.
References in periodicals archive ?
The values of the dimensionless number K for each test are illustrated on the graphical representations (Figs.
Tingyue Gu proposed in 1995 proposed a model based on dimensionless numbers using mass transfer and energy (Tingyue, n.
In this study, operating conditions of the base case in terms of dimensionless numbers are [N.
The Grashof number is a dimensionless number in fluid dynamics that approximates the ratio of the buoyancy force to the viscous force acting on a fluid.
In the Ratio System in order to give more importance to an objective, its response on an alternative under the form of a dimensionless number is multiplied with a Significance Coefficient:
In the Ratio System in order to give more importance to an objective its response on an alternative under the form of a dimensionless number could be multiplied with a Significance Coefficient:
In the Ratio System to give more importance to an objective its response on an alternative under the form of a dimensionless number could be multiplied with a Significance Coefficient:
Power factor (real power/ apparent power) is a dimensionless number between 0 and 1.
From Fig 2 & 3 it is observed that the pressure losses vary linearly with respect to dimensionless number i.
Gr = Grashof number (A dimensionless number approximates the ratio of the buoyancy to viscous force acting on a fluid.
For this reason, the model developed by Lamont and Scott has been modified introducing a dimensionless number, the gas flow number G, that relate the surface gas velocity, the viscosity and the surface tension of the liquid phase.

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