roughness


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roughness

[′rəf·nəs]
(fluid mechanics)
Distance from peaks to valleys in pipe-wall irregularities; used to modify Reynolds number calculations for fluid flow through pipes.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
When using EM simulators or other commercial CAE tools, designers account for the effects of conductor surface roughness by relying on the traditional Morgan Correlation.
The specimens with different surface roughness and pin were cleaned with acetone prior to wear tests.
Thus, the objective of this current study is to evaluate the effect of WEDM machining parameters on the surface roughness for main cut and multiple trim cuts using Taguchi methods.
With the ZEISS ROTOS sensor, the operator also avoids having to reclamp parts and transport them between roughness measurement systems and CMMs.
A Linear regression is performed by comparing the field measured roughness of 15 samples having roughness for smooth to very roughness (Shaohua Zhao, 2016).
(2013), for example, studied the surface quality of spheroidal graphite cast iron without considering the interactive effects of cutting parameters on the surface roughness. Aouici et al.
The roughness value Ra 0.5 [micro]m of this standard is the lowest roughness value used in this test.
To further reveal the mechanism by which substrate roughness affects pattern formation, we observed the process of droplet evaporation in real time.
[3] used GA and particle swarm optimization (PSO) techniques to determine optimal cutting parameters in turning operations with a multiobjective optimization aiming to minimize surface roughness and cutting forces and maximize tool life.
The effects of different types of roughness on the receptivity and stability of the boundary layer vary greatly.