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 appropriate dimensionless number for heat transfer may be obtained from dimensional analysis or by dimensionalizing and simplifying the equations of motion and energy.
Two important dimensionless numbers, Deborah (De) and the Stefan (St) numbers, are identified in relation to the crystallization process.
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:
Reynolds number and Nusselt number are important dimensionless numbers playing effective role in predicting the heat transfer behavior in the furnace.
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.
The PI model generates a dimensionless number (or value) reflecting the magnitude of cleanup considerations at a site.
This dimensionless number, which is important in high-frequency applications, varies with temperature, moisture, frequency and thickness.
This parameter is a dimensionless number which measures the within-aggregate void volume relative to the volume of carbon in the aggregate.
The most important of these parameters was a dimensionless number (gamma), of the Damkohler type, involving terms representative of reaction, diffusion, and adsorption.
ij] = this time a dimensionless number representing the response of alternative j on objective i (3).