uniformity coefficient

uniformity coefficient

A coefficient related to the size distribution of a granular material, such as sand; obtained by dividing one size of grain (60% of the grains are smaller than this size, by weight) by a second size (10% of the grains are smaller than this size, by weight).
References in periodicals archive ?
Distribution uniformity was expressed through the statistical uniformity coefficient (SUC) and distribution uniformity of the lowest quartile (DU).
Likewise, the results obtained are in line with those obtained by El-Badawi (2001) who found the uniformity coefficient of 85% at central Sudan.
The water distribution uniformity coefficients used in this study were the Christiansen uniformity coefficient (CU, in %), proposed by CHRISTIANSEN (1942), Equation 1, and the distribution uniformity coefficient (DU, in %), proposed by CRIDDLE et al.
The measured discharge was used to calculate the uniformity coefficient and distribution uniformity using the equations given by ASAE [28, 29, 30, 13].
Playan et al [25] reported that the wind velocity is the meteorological variable most directly related to irrigation performance through its effects on Christiansen's uniformity coefficient (CUC) [6] and on the wind drift and evaporation losses (WDEL) [33].
2004) performed undrained cyclic triaxial tests on river sands and decomposed granite soil sample having different relative densities and uniformity coefficient.
These beads offer high chemical, mechanical and osmotic stability as a result of their optimized particle size distribution, with a uniformity coefficient significantly below 1.
Uniformity of application of a sprinkler system can be expressed by the uniformity coefficient given in Chapter 15.