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A method for the prediction of the primary flow on large diameter spiral troughs / A.B. Holland-Batt in Minerals engineering, Vol. 22 N° 4 (Mars 2009) 

Public ISBD [article]  in Minerals engineering > Vol. 22 N° 4 (Mars 2009) . - pp. 352–356 Titre : A method for the prediction of the primary flow on large diameter spiral troughs Type de document : texte imprimé Auteurs : A.B. Holland-Batt, Auteur Année de publication : 2009 Article en page(s) : pp. 352–356 Note générale : Génie Minier Langues : Anglais (eng) Mots-clés : Large  spirals  Fluid  flow  Prediction Résumé : In previous work an analysis of the primary flow and secondary circulation on a spiral was developed, based on the use of the Manning equation to describe the flow on the inner part of the spiral and the free vortex equation to characterise the flow on the outer section. More recent studies have advocated the use of the Laminar equation or a new relationship based on the Bagnold shear force. The theoretical basis is modified in the present contribution to permit the estimation of the primary flow on large diameter spiral troughs where the whole of the free surface is part of the vortex flow. Flow predictions for two different large diameter spirals are presented. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687508002409 [article] A method for the prediction of the primary flow on large diameter spiral troughs [texte imprimé] / A.B. Holland-Batt, Auteur . - 2009 . - pp. 352–356. Génie Minier Langues : Anglais (eng) in Minerals engineering > Vol. 22 N° 4 (Mars 2009) . - pp. 352–356 Mots-clés : Large  spirals  Fluid  flow  Prediction Résumé : In previous work an analysis of the primary flow and secondary circulation on a spiral was developed, based on the use of the Manning equation to describe the flow on the inner part of the spiral and the free vortex equation to characterise the flow on the outer section. More recent studies have advocated the use of the Laminar equation or a new relationship based on the Bagnold shear force. The theoretical basis is modified in the present contribution to permit the estimation of the primary flow on large diameter spiral troughs where the whole of the free surface is part of the vortex flow. Flow predictions for two different large diameter spirals are presented. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687508002409