×
Home Current Archive Editorial board
News Contact
Original scientific article

INFLUENCE OF ROUGHTY OF A RECTANGULAR OPEN CHANNEL ON FLOW SPEEDS AND WATER FLOW

By
Nedim Suljić
Nedim Suljić
Contact Nedim Suljić

Faculty of Mining, Geology and Civil Engineering, University of Tuzla, Tuzla, Bosnia and Herzegovina

Abstract

This paper presents an analysis of water flow and flow velocity in an open channel of rectangular cross section as a function of channel roughness, ie Manning roughness coefficient. Three different cases of finishing the open channel of rectangular cross-section were analyzed, namely the concrete channel, the channel with smoothed cement mortar and the channel in very poor condition with shore erosion overgrown with sedges and large stones at the bottom of the channel. Analyzes were performed on a rectangular channel 3.0 m wide and with water depths in the channel from 0.5 m to 1.5 m with a step of 0.1 m, for steady flow. The longitudinal fall of the bottom of the rectangular channel in all analyzed cases was 1%.u urađene na pravougaonom kanalu širine 3,0 m i sa dubinama vode u kanalu od 0,5 m do 1,5 m sa korakom od 0,1 m, za ustaljeno tečenje. Podužni pad dna pravougaonog kanala u svim analiziranim slučajevima je iznosio 1%. The paper showed that higher Mannig roughness coefficients give lower water flow in the canal. The importance of the paper is reflected in the fact that for each of the three analyzed treatments of the rectangular channel, a quadratic function of water velocity and flow depending on the water depth in the channel was obtained. During the hydraulic calculation, the type of lining of the open rectangular channel should be taken into account in order for the dimensioned channel to be the most favorable in terms of maximum throughput.

References

[{"id":4064,"citationNumber":"1","type":"book","title":"Fundamentals of hydromechanics-the theory and tasks","DOI":null,"author":[{"given":"N.","family":"Suljic"}],"issued":{"date-parts":["2014"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":4065,"citationNumber":"2","type":"book","title":"Hydrotechnics \u2013 solved tasks and theoretical bases","DOI":null,"author":[{"given":"N.","family":"Suljic"}],"issued":{"date-parts":["2018"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":4066,"citationNumber":"3","type":"book","title":": Fluid Mechanics","DOI":null,"author":[{"given":"F.M.","family":"White"}],"issued":{"date-parts":["2005"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":4067,"citationNumber":"4","type":null,"title":"Hydromechanik, Technische Universitat Munchen","DOI":null,"author":[{"given":"M.","family":"Manhart"}],"issued":{"date-parts":["2006"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":4068,"citationNumber":"5","type":"book","title":"Hydraulics","DOI":null,"author":[{"given":"I.I.","family":"Agroskin"}],"issued":{"date-parts":["1969"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":4069,"citationNumber":"6","type":null,"title":"Open Channel Flow","DOI":null,"author":[{"given":"S.C.","family":"Jain"}],"issued":{"date-parts":["2000"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":4070,"citationNumber":"7","type":"book","title":"Hidrotehnika I, authorized lectures, Faculty of Mining, Geology and Civil Engineering","DOI":null,"author":[{"given":"N.","family":"Sulji\u0107"}],"issued":{"date-parts":["2009"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":4071,"citationNumber":"8","type":"thesis","title":"Analysis of the coefficient of roughness in the example of the channel Butonige Istria","DOI":null,"author":[{"given":"E.","family":"\u017dic"}],"issued":{"date-parts":["2009"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":4072,"citationNumber":"9","type":"book","title":"Fluid mechanics-book two-introduction to hydraulics","DOI":null,"author":[{"given":"G.","family":"Hajdin"}],"issued":{"date-parts":["2002"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":4073,"citationNumber":"10","type":"paper-conference","title":"Hydraulic analyses of different cross","DOI":null,"author":[{"given":"I.","family":"Kolar"},{"given":"G.","family":"Volf"},{"given":"E.","family":"\u017dic"}],"issued":{"date-parts":["2018"]},"container-title":"Proceedings, Faculty of Civil Engineering in Rijeka","volume":null,"issue":null,"page":null}]

[{"id":4074,"citationNumber":"11","type":"book","title":"Introduction to Fluid Mechanics","DOI":null,"author":[{"given":"E.J.","family":"Shaughnessy"},{"given":"I.M.","family":"Katz"},{"given":"J.P.","family":"Schaffer"}],"issued":{"date-parts":["2005"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":4075,"citationNumber":"12","type":"book","title":"Fluid mechanics \u2013 for students of the Faculty of Civil Engineering, Faculty of Civil Engineering","DOI":null,"author":[{"given":"D.","family":"Prodanovi\u0107"}],"issued":{"date-parts":["2007"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":4076,"citationNumber":"13","type":"book","title":"Einfuhrung in die Hydromechanik","DOI":null,"author":[{"given":"G.H.","family":"Jirka"}],"issued":{"date-parts":["2007"]},"container-title":null,"volume":null,"issue":null,"page":null}]

[{"id":4077,"citationNumber":"14","type":"paper-conference","title":"Causes, damages and consequences of floods in the area of Tuzla, Academy of Sciences and Arts of BiH","DOI":null,"author":[{"given":"N.Kikanovi\u0107","family":"Sulji\u0107"},{"given":"N.","family":"Ulji\u0107"},{"given":"M.","family":""}],"issued":{"date-parts":["2015"]},"container-title":"Department of Natural Sciences and Mathematics, Symposium Food Risk management and Mitigation of Damaging Consequences,Volume 25","volume":null,"issue":null,"page":null}]

[{"id":4078,"citationNumber":"15","type":null,"title":"Analysis of different cross-sectional shapes of this type of lining on the flow of watercourses \/ canals","DOI":null,"author":[{"given":"I.","family":"Kolar"}],"issued":{"date-parts":["2018"]},"container-title":null,"volume":null,"issue":null,"page":null}]

Citation

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 

Article metrics

Google scholar: See link

The statements, opinions and data contained in the journal are solely those of the individual authors and contributors and not of the publisher and the editor(s). We stay neutral with regard to jurisdictional claims in published maps and institutional affiliations.