An Integrated Approach of Profi le Studies for Surface Water Velocity on a Steep Slope in a Rectangular Channel

• Autorzy: Ayalew Abebe Temesgen , Koshuma Abera Ermias , Ayele Mesfi n Amaru , Dirate Democracy Dilla

Identyfikatory

DOI

10.12913/22998624/145965

• Języki publikacji: EN

Abstrakty

EN

The flow velocity of water and its accurate surface profile estimation is important parameter as changes in climate increases the uneven rainfall patterns causing flood in downstream. It is important to know the velocity profile in steep open channel flows for solving the soil erosion, flooding and sediment transport problems in rivers or streams on steep slopes. A fixed bed laboratory experiment for a rectangular channel with steep slope is conducted to find the velocity profiles and surface profiles at different sections. Velocity profiles are presented at different sections in rectangular channel with steep slope. The outcome of the laboratory based experimental investigation shows that the velocity and surface profiles are influenced by the depth of flow of water and channel bed slope respectively.

Słowa kluczowe

EN

fluid mechanics; velocity profiles; rectangular channel; Pitot tube; Acoustic Doppler Velocitymeter; ADV

• Wydawca: Lublin University of Technology ; Polish Society of Ecological Engineering (PTIE), Branch of PTIE in Lublin
• Czasopismo: Advances in Science and Technology. Research Journal
• Rocznik: 2022
• Tom: Vol. 16, no 2
• Strony: 74--80
• Opis fizyczny: Bibliogr. 17 poz., fig., tab.

Twórcy

autor

Ayalew Abebe Temesgen

• Water Technology Institute, Arba Minch University, Arba Minch, Ethiopia

• https://orcid.org/0000-0003-0091-880X

autor

Koshuma Abera Ermias

• Water Technology Institute, Arba Minch University, Arba Minch, Ethiopia

autor

Ayele Mesfi n Amaru

• Water Technology Institute, Arba Minch University, Arba Minch, Ethiopia

autor

Dirate Democracy Dilla

• Institute of Technology, Arba Minch University, Arba Minch, Ethiopia

Bibliografia

• 1. Castro-Orgaz O., Giráldez J.V., Ayuso J.L. Higher-order critical flow condition in curved-streamline flow. J. Hydraul. Res. 2008; 46: 849–853.
• 2. Castro-Orgaz O., Hager W.H. One-dimensional modelling of curvilinear free-surface flow: Generalised Matthew theory. J. Hydraul. Res. 2014; 52: 14–23.
• 3. Chanson H. Minimum specific energy and critical flow conditions in open channels Journal of Irrigation Engineering. 2006; 498–502. DOI: 10.1061/ASCE0733-94372006132:5(498)
• 4. Chaw. Estimation of velocity for uniform flow conditions. Drain. Eng. 2012; (132): 498–502.
• 5. Chaudhry M.H. Open Channel Flow, 2nd ed.; Springer and Media Science LLC: New York, NY, USA. 2008: 18–37.
• 6. Denlinger R.P., O’Connell D.R. Computing non-hydrostatic shallow-water flow over steep terrain. J. Hydraul. Eng. 2008; 134: 1590–1602.
• 7. Florens E., Eiff O., Moulin F. Defining the roughness sub layer and its turbulence statistics’. Exp. Fluids. 2013; 54: 1–15.
• 8. Kirkgoz M. Turbulent velocity profiles for smooth and rough open channel flow. J. Hydraul Eng., ASCE. 1989; 115(11): 1543–1561.
• 9. Lu J.Y., Hong J.H. Measurement and simulation of turbulent flow in a steep open–channel with smooth boundary. Journal Chinese Institute Eng. 2003; 26(2): 201–210.
• 10. Madadi M.R., Dalir A.H., Farsadizadeh D. Investigation flow characteristics above trapezoidal broad-crested weirs Flow Meas. Instrum. 2014; 38: 139–148.
• 11. Pagliara S., Das R., Carnacina I. Flow resistance in large-scale roughness conditions. Canadian Journal of Civil Engineering. 2008; 35: 1285–1293.
• 12. Salih Kirkgoz M. Velocity profiles for smooth and rough open channel flow. Journal of Hydraulic Engineering ASCE. 1990; 115(11): 1543–1561.
• 13. Sarma V.N., Lakshminarayana P. Velocity distribution in smooth rectangular open channel. Journal of Hydraulic Engineering, ASCE. 1983; 109(2): 270–289.
• 14. Schmocker L., Halldórsdóttir B.R., Hager W.H. Effect of weir face angles on circular-crested weir flow. J. Hydraul. Eng. 2011; 137: 637–643.
• 15. Shayan H.K., Khezerloo A.B., Farhoudi J., Aminpoor Y. A discussion to “Discharge coefficient of circular-crested weirs based on a combination of flow around a cylinder and circulation”. J. Irrig. Drain. Eng. 2015: 141.
• 16. Tang X., Knight D. A general model of Lognitudnal depth-averaged velocity distributions for open channel flows. Advances in Water Resources Research. 2008: 846–857.
• 17. Tominaga A., Nezu I. Velocity profiles in steep open-channel. Journal of Hydraulic Engineering, ASCE. 1992; 190(25): 9–73.

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).