Modeling of a Water Flow Over Stepped Spillways

• Autorzy: Kherbache K. , Chesneau X. , Abide S. , Benmamar S.
• Języki publikacji: EN

Abstrakty

EN

In this work, a numerical analysis of the flow over a stepped spillway is performed. The free surface flow is described by the Reynolds Averaged Navier-Stokes equation (RANS) coupled to k-ε model. These equations are solved using a commercial software based on the finite volume scheme and the VOF method. We analyzed the influence of the steps shape and water flow rate on velocity, turbulence dissipation rate and pressure distributions. In this, we found that the maximum values of the static pressure and the turbulence dissipation rate increase as the discharge increases and the main flow velocity is greater than the one of the secondary flow.

Słowa kluczowe

EN

water flow; Navier-Stokes equation; VOF method

• Wydawca: Oficyna Wydawnicza Politechniki Warszawskiej
• Czasopismo: Machine Dynamics Research
• Rocznik: 2013
• Tom: Vol. 37, No. 1
• Strony: 51--68
• Opis fizyczny: Bibliogr. 19 poz., il., wykr.

Twórcy

autor

Kherbache K.

• Université de Perpignan Via Domitia (UPVD), LAboratoire de Mathématiques et de PhySique (LAMPS) EA4217, F-66860, Perpignan, France
• Laboratoire de Recherche des Sciences de l’eau, Ecole Nationale Polytechnique- 10 Avenue Hassen Badi, 16000 Alger- Algérie

autor

Chesneau X.

• Université de Perpignan Via Domitia (UPVD), LAboratoire de Mathématiques et de PhySique (LAMPS) EA4217, F-66860, Perpignan, France

autor

Abide S.

• Université de Perpignan Via Domitia (UPVD), LAboratoire de Mathématiques et de PhySique (LAMPS) EA4217, F-66860, Perpignan, France

autor

Benmamar S.

• Laboratoire de Recherche des Sciences de l’eau, Ecole Nationale Polytechnique- 10 Avenue Hassen Badi, 16000 Alger- Algérie

Bibliografia

• 1. Benmamar, S., Kettab, A. and Thirriot, C., 2003, Numerical simulation of turbulent flow upstream of the inception point in a stepped channel, Proceedings, 30th IAHR Congress. Auth, Thessaloniki, Greece: 679-686.
• 2. Bombardelli F. A., Meireles I., Matos J., 2010, Laboratory measurements and multi-block numerical simulations of the mean flow and turbulence in the non-aerated skimming flow region of steep stepped spillways, Journal of Environmental Fluid Mechanics, 11(3), 263-288.
• 3. Chanson H., 1992, Entraînement d'air dans les écoulements à surface libre : application aux évacuateurs de crues de barrage, La Houille Blanche, N°4, 277- 287.
• 4. Chanson H., 1993, Stepped Spillway Flows and Air Entrainment, Canadian journal of civil engineering, Vol. 20, No. 3, 422- 435.
• 5. Chanson H., 1994, Comparison of energy dissipation between nappe and skimming flow regimes on stepped chutes, Journal of Hydraulic Research, Vol. 32, No. 2, 213- 219.
• 6. Chanson H., 1994, Hydraulics of skimming flows over stepped channels and spillways, Journal of Hydraulic Research, Vol. 32, No. 3, 445-460.
• 7. Chanson H., 2001, Hydraulic Design of stepped spillways and downstre am energy dissipaters, Dam Engineering, Vol. 11, No. 4, 205-242.
• 8. Chen Q., Dai G., Liu H., 2002, Volume of fluid model for turbulence numerical simulation of stepped spillway overflow, Journal of Hydraulic Engineering , 128(7), 683–688.
• 9. Chen Q, Dai G., Zhu F., Qing Y., 2004, Three-dimensional turbulence numerical simulation of a stepped spillway overflow, Journal of Hydrodynamics , Ser. B, 16(1), 74-79. China Ocean Press, Beijing
• 10. Chen Q., Dai G., Zhu F., 2005, Influencing factors for the energy dissipation ratio of stepped spillways, Journal of Hydrodynamics, ser.B, 17(1), 50- 57.
• 11. Cheng X.J., Chen Y.C., Luo L., 2006, Numerical simulation of air-water two-phase flow over stepped spillways, Science in China Series E: Technological Sciences, Vol.49, No.6, 674-684.
• 12. Fratino U., Amador A., Valenzano B., Renna F.M., Sánchez-Juny M. and Dolz J., 2003, Air inception and pressure fields over a stepped spillway in transition flow regime, XXX IAHR Congress, AUTh, Thessaloniki, Greece, 711-718.
• 13. Felder S. and Chanson H., 2013, Air–water flow measurements in a flat slope pooled stepped waterway, Canadian journal of civil engineering, 40, 361– 372.
• 14. Hirt, C. W., and Nichols, B. D., 1981, Volume of fluid (VOF) Method for the dynamics of free boundaries, Journal of computational physics, 39, 201–225.
• 15. Meireles I.; Bombardelli F. and Matos J., 2009, Experimental testing and numerical simulation of the non-aerated skimming flow over steeply sloping stepped spillways, 33rd IAHR Congress, Vancouver, Canada, 1972-1979.
• 16. Qian Z.D., Hu X.Q., Huai W.X. & Amador A. 2009, Numerical simulation and analysis of water flow over stepped spillways, Science in China Series E:Technological Sciences, 52(7), 1958-1965.
• 17. Roshan R., Azamathulla H. Md., Marosi M., Sarkardeh H., Pahlavan H., Ab Ghani A., 2010, Hydraulics of stepped spillways with different numbers of steps, Journal of Dams and Reservoirs, No. 3, 131–136.
• 18. Sabbagh-Yazdi S.R., Safahieh R. and Mastorakis N.E., 2007, Post-Processing of Air Entrainment on NASIR Flow Solver Results for Skimming Flow over Stepped Chutes, 9th WSEAS International Conference on Automatic Control, Modeling & Simulation (ACMOS'07), Istanbul, Turkey, 2007.
• 19. Wu J., Zhang B., Ma F, 2013, Inception point of air entrainment over stepped spillways, journal of Hydrodynamics, 25(1), 91-96.