Outlet Flow Velocity in Circular Culvert

• Autorzy: Szpakowski W.

Identyfikatory

DOI

10.1515/heem-2015-0013

• Języki publikacji: EN

Abstrakty

EN

The outlet flow velocity in the end section of the culvert barrel depends in most cases on the culvert geometry, including the barrel slope, as well as on upstream and downstream channel parameters. Flowing water can create pressure flow or free surface flow in the culvert barrel. In the case of an unsubmerged barrel outlet, the free-surface flow is more frequent than the full flow. Increased velocities can cause channel bed scour and bank erosion downstream of the culvert outlet. Different culvert flow cases in which the barrel outlet is unsubmerged are presented in this paper. The influence of the flow regime on the outlet velocity is also discussed.

Słowa kluczowe

EN

culvert conveyance; outlet velocity; circular culvert; critical flow

• Wydawca: Institute of Hydro-Engineering of Polish Academy of Sciences
• Czasopismo: Archives of Hydro-Engineering and Environmental Mechanics
• Rocznik: 2014
• Tom: Vol. 61, nr 3-4
• Strony: 193–--203
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Szpakowski W.

• Gdańsk University of Technology, Faculty of Civil and Environmental Engineering, ul. G. Narutowicza 11/12, 80-233 Gdańsk, Poland

Bibliografia

• Bodhaine G. L. (1968) (first printing) Measurement of Peak Discharge at Culverts by Indirect Methods. Techniques of Water Resources Investigation of the United States Geological Survey, U.S. Geological Survey, Washington.
• Chanson H. (2004) The hydraulics of open channel flow: an introduction, Elsevier, Oxford.
• Henderson F. M. (1966) Open Channel Flow, Macmillan publishing,New York, London.
• French R. H. (2007) Open Channel Hydraulics, Water Resources Publications, LLC.
• Regulation published by the Minister of Transport and Maritime Affairs on technical conditions to be met by traffic engineering structures and their location (Journal of Laws of 2000, No. 63, item 735) (in Polish).
• Sawicki J. (2009) Flow mechanics, Wydawnictwo PG, Gdansk (in Polish).
• Schall J. D., Thompson P. L., Zerges S. M., Kilgore R. T., Morris J. L. (2012) Hydraulic design of highway culverts, U.S. Department of Transportation, Federal Highway Administration FHWA-HIF-12-026.
• Szpakowski W. (2013) Estimation of the actual capacity of a road culvert, Drogownictwo, LXVIII (6), 189–192 (in Polish).
• Szymkiewicz R. (2010) Numerical Modeling in Open Channel Hydraulics, Springer, Dordrecht, Heidelberg, London, New York.