oa Civil Engineering = Siviele Ingenieurswese - Discrepancy of the Colebrook-White equation in the extreme rough turbulent zone
|Article Title||Discrepancy of the Colebrook-White equation in the extreme rough turbulent zone|
|© Publisher:||South African Institution Of Civil Engineering (SAICE)|
|Journal||Civil Engineering = Siviele Ingenieurswese|
|Affiliations||1 *Department of Water Affairs|
|Publication Date||Nov 1984|
|Pages||539 - 541|
|Keyword(s)||Colebrook-White equation, Crocodile River, Manning's equation, River and Turbulent zone|
Following some experimental observations in the Crocodile River near Brits, it is shown in this paper that the Colebrook-White equation loses its validity in the extreme rough turbulent zone where Manning's n exceeds about 0,05. Consequently, It is recommended that the Colebrooke-Whlte equation should not be applied in this zone. A number of important research requirements with regard to the Colebrook-White equation, are identified In this paper.
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