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Non-prismatic channels for reducing shear stress

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Języki publikacji
EN
Abstrakty
EN
To reduce the sediment transport capacity, shear stress needs to be reduced as well. The article describes work that has been done to find a way to make these reductions possible. The theoretical study and the approach proposed allowed us to obtain a general equation that determines conditions and calculates the most important parameters which support the reduction of shear stress. This describes the mechanism that erodes soils by free surface water flow. In a similar vein, we have shown that adding a short non-prismatic channel to the entrance of a prismatic channel, which has the same geometric shape, is a very powerful way to reduce shear stress. With the idea of reducing shear stress, we have shown that the water-surface profile type plays a key role and must therefore be included in future reflections on reducing the importance of shear stress. Additionally, the notion of efficiency was introduced that allows to evaluate the expected gain after the reduction of shear stress and adding a short non-prismatic channel. The laws of similarity applied to free surface flows allowed us to obtain an equation with several equivalence scales and compare different geometric shapes in terms of their efficiency in the reduction of shear stress.
Wydawca
Rocznik
Tom
Strony
87--94
Opis fizyczny
Bibliogr. 17 poz., rys., tab.
Twórcy
autor
  • Houari Boumediène University of Sciences and Technology, Faculty of Civil Engineering. LEGHYD Laboratory, BP 32 Bab Ezzouar, 16111 Algiers, Algeria
  • Akli Mohand Oulhadj University of Bouira, Rue Frères Boussendalah, 10000 Bouira, Algeria
Bibliografia
  • BECZEK M., RYŻAK M., SOCHAN A., MAZUR R., POLAKOWSKI C., HESS D., BIEGANOWSKI A. 2020. Methodological aspects of using high-speed cameras to quantify soil splash phenomenon. Geoderma. Vol. 378, 14592. DOI 10.1016/j.geoderma.2020.114592.
  • CHAUDHRY M.H. 2008. Open-channel flow. 2nd ed. Springer Science + Business Media, LLC, New York, USA. ISBN 978-0-387-30174-7 pp. 523.
  • CHOW V.T. 1959. Open channel hydraulics. McGraw Hill. ISBN 07-010776-9 pp. 702.
  • DEY S. 2014. Fluvial hydrodynamics. Ser. GeoPlanet: Earth and Planetary Sciences. Berlin, Germany. Springer-Verl. ISBN 978- 3642190612 pp. 719.
  • ETTEMA R. 2000. Hydraulic modeling. Concepts and practices. ASCE Manuals and Reports on Engineering Practice. No. 97. ISBN 978- 0784404157 pp. 390.
  • HADDAD S., BOUHADEF M. 2019. Contribution à l’étude du phénomène de transport des sédiments par érosion des sols [Contribution to the study of the phenomenon of sediment transport by soil erosion] [online]. PhD Thesis. Algiers, Algeria. USTHB pp. 136. [Access 10.02.2021]. Available at: http://repository.usthb.dz//xmlui/handle/123456789/8210
  • HADDAD S., BOUHADEF M. 2018. Contribution to runoff erosion of earthen channels. Polish Journal of Soil Science. Vol. 51. No. 2 p. 313–325. DOI 10.17951/pjss.2018.51.2.313.
  • HENDERSON F.M. 1966. Open channel flow. New York, USA. MacMillan Company. ISBN 978-0023535109 pp. 522.
  • KRAATZ D.B. 1977. Irrigation channel lining. FAO. Italy. ISBN 9251001650 pp. 199.
  • LANE E.W. 1953. Progress report on studies on the design of stable channels. Bureau of Reclamation. Proceedings. No. 79. New York, USA. ASIN B0007I585M pp. 31.
  • LANE E.W. 1955. Design of stable alluvial channels. Transactions of the American Society of Civil Engineers. Vol. 120. Iss. 1 p. 1234– 1260.
  • MASSÉ P. 1938. Ressaut et ligne d’eau dans les cours d’eau à pente variable [Hydraulic jump and flow profile in channels of variable slope]. Revue Générale de l’Hydraulique. Vol. 4. No. 19 p. 7–11.
  • POINCARÉ H. 1881. Mémoires sur les courbes définies par une équation différentielle [Memoir on the curves defined by a differential equation] [online]. Journal de Mathématiques Pures et Appli-quées. Ser. 3. Vol. 7 p. 375–422. [Access 10.02.2021]. Available at: http://sites.mathdoc.fr/JMPA/PDF/JMPA_1881_3_7_A20_0.pdf
  • PUGH C.A. 1985. Hydraulic model studies of fuse plug embankments [online]. Denver, CO. Bureau of Reclamation, Engineering and Research Center. Report No. REC-ERC-85-7 pp. 33. [Access 20.02.2021]. Available at: https://www.usbr.gov/tsc/techrefer-ences/rec/REC-ERC-85-7.pdf
  • SMERDON E.T, BEASLEY R.P. 1959. The tractive force theory applied to stability of open channels in cohesive soils [online]. Columbia, MO. University of Missouri, Missouri. USA. Agricultural Experiment Station. Research Bulletin. No. 715 pp. 36. [Access 20.02.2021]. Available at: https://mospace.umsystem.edu/xmlui/ handle/10355/58141
  • TROUT T.J., NEIBLING W.H. 1993. Erosion and sedimentation processes on irrigated fields. Journal of Irrigation and Drainage Engineer-ing. Vol. 119. No. 6. DOI 10.1061/(ASCE)0733-9437(1993)119:6(947).
  • YALIN M.S. 1971. Theory of hydraulic models. London. Macmillan Civil Engineering Hydraulics. The Macmillan Press LTD, USA. ISBN 978-0408004824 pp. 266.
Uwagi
Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-821ca705-669d-4c74-b439-66973f357b2f
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