roughness factor

roughness factor

[′rəf·nəs ‚fak·tər]
(fluid mechanics)
A correction factor used in fluid-flow calculations to allow for flow resistance caused by the roughness of the surface over which the fluid must flow.
References in periodicals archive ?
The pattern must have neighboring features with different spaces described by different sinusoidal waves with a roughness factor of 4 to 50.
8] orthogonal arrays for Taguchi Method to analyze the surface roughness factor.
Depending on the application, components coming into contact with the product are made from high grade stainless steel with a roughness factor (Ra) of between 0.
r], the roughness factor K can be calculated by the regression relationship derived from Woodruff & Siddoway (1965).
Here, r is a so-called roughness factor (considering the profile of a rough surface), [[phi].
The surface roughness and the roughness factor were obtained from height images.
And for yearS, like many in the industry, Lynch suspected print quality would be higher when the roughness factor of newsprint was at the low end of the Parker Print Surf measure.
12), where the N value relates to the channel roughness factor.
They were placed in the "average" roughness category when ASHRAE developed the Duct Roughness Factor table in the Handbook.
Therefore, a new soil roughness factor for RWEQ has been developed.