[en] Experimental tests have been performed to observe and determine, in stationary flow conditions, the local head loss at the transition from a free surface channel to a conduit. These investigations considered a wide range of discharge and varied dimensions and positions of a rectangular cross section conduit connected to the downstream extremity of a rectangular free surface channel. From the head loss evaluation results, simple analytical expressions to predict the local head loss coefficient value at the rectangular transition from a channel to a conduit are proposed and validated.
Disciplines :
Civil engineering
Author, co-author :
Van Nam, Nguyen
Archambeau, Pierre ; Université de Liège - ULiège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Dewals, Benjamin ; Université de Liège - ULiège > Département ArGEnCo > Hydraulics in Environmental and Civil Engineering
Pirotton, Michel ; Université de Liège - ULiège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Erpicum, Sébastien ; Université de Liège - ULiège > Scientifiques attachés au Doyen (Sc.appliquées)
Language :
English
Title :
Local head-loss coefficient at the rectangular transition from a free-surface channel to a conduit
Alternative titles :
[fr] Coefficient de perte de charge locale à la transition rectangulaire d'un canal à surface libre vers une conduite
Gardel, A. (1962). Perte de charge dans un étranglement conique, Editions de la Société du Bulletin Technique de la Suisse Romande, Lausanne, 23.
Hager, W. H. (2008). Wastewater hydraulics: Theory and practice, Springer, New York.
Idel'cik, I. E. (1986). Handbook of hydraulic resistance, Hemisphere Publishing, Washington, DC.
John, O. R., Sastry, G. P., and David, A. D. (1998). Applied regression analysis: A research tool, Springer, New York.
McGovern, J. (2011). Friction factor diagrams for pipe flow, Dublin Institute of Technology, Dublin, Ireland, 15.
Norman, J. M., Houghtalen, R. J., and Johnston, W. J. (2001). "Hydraulic design of highway culverts." Hydraulic Design Series No. 5 (HDS-5), Rep. FHWA-NHI-01-020, U.S. Dept. of Transportation, Federal Highway Administration, Washington, DC, 254.
Tullis, B. P., Anderson, A. S., and Robinson, S. C. (2008). "Entrance loss coefficients and inlet control head-discharge relationships for buriedinvert culverts." J. Irrig. Drain. Eng., 134(6), 831-839.
