# dimensionless number

Also found in: Encyclopedia, Wikipedia.
Related to dimensionless number: Biot number

## dimensionless number

n.
A number representing a physical property, such as a drag coefficient or a measure of stress, that has no scale of physical units (as of time, mass, or distance).
Mentioned in ?
References in periodicals archive ?
overlap] - overlapping area height, mm; h - depth of the sprayer slit, mm; K - dimensionless number characterizes relation between dispersions; [K.
We define these properties in terms of the coefficient of friction (COF, often denoted as g), a dimensionless number, which describes the ratio of the force of friction between two bodies and the force pressing them together.
This dimensionless number depends directly on the mass transfer coefficient, it is intended that this value is as high as possible on any system to facilitate the exchange of molecules between the two phases, this factor depends on the Reynolds number, which characterizes the movement of a fluid, in liquid chromatography is intended that the fluid passing through the column is in laminar regime, as consequence the molecular transfer between the phases is facilitated.
The score is generally reported as the H-index, a dimensionless number, and is a count of citations derived by a certain formula.
This strongly suggests that another dimensionless number needs to be introduced to characterize this periodic flow response.
The Rayleigh number for a fluid is a dimensionless number associated with the heat transfer within the fluid.
The search for mathematical expression for this dimensionless number motivated many serious scientists.
a dimensionless number representing the response of alternative j on objective i, meaning that the number is no more expressed in money, weights, length, volume etc.
where [gamma] is a dimensionless number that is the ratio of an arbitrary air supply speed to a reference air supply speed, [u.
ij] = a dimensionless number representing the response of alternative j on objective i.
ij*] = a dimensionless number representing the normalized response of alternative j on objective i.
An important dimensionless number of magnetohydrodynamics which represents the ratio of the Lorentz force to the viscosity has been named as Chandrasekhar number in his honour.

Site: Follow: Share:
Open / Close