Application and Comparsion of Mathematical and Physical Models on Inspecting Slab of Stilling Basin Floor under Static and Dynamic Forces

Abstract:

To protect downstream of hydraulic structures against erosion and degradation, must dipress water energy. one of the most comon methods to achive this purpose is constructing the stilling basin at the downstream of such structures. In stilling basin, the water energy dissipated by taking place of hydraulic jump. When a hydraulic jump occurs, the hydrodynamic and hydrostatic forces effect on the stilling basin floor slab. These forces include the force due to water weight and the up lift force affected the slab below which these forces are classified in hydrostatic. also the other force is hydrodynamic force due to pressure fluctions below the hydraulic jump. To keep the stilling basin stabillity from liffting up and destruction must the resistant forces be equal to destroyer forces. In this study after discution about the hydraulic jump and its resultant forces, a equation has been offerd to determine the thickness of stilling basin floor slab using buckingham theory andsoftware DATAFIT. Finaly the slab which evaluated by physical model, simulated using mathematical model(software ANSYS 10) and studied. The stress and strain diagrams were extracted. Results showed that physical and mathematical models were matched very good.

• Periodical: Applied Mechanics and Materials (Volume 147)
• Pages: 283-287
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.147.283
• Online since: December 2011
• Authors: Behzad Mohammadzadeh, Mahmoud Bina, Hooshang Hasounizadeh
• Keywords: Hydraulic Jump, Hydrodynamic Force, Hydrostatic Force, Mathematical Models, Physical Model, Stilling Basin

References

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[4] Fioroto , v. and Rinaldo , A. (1992a). ' Fluctuating uplift and lining Design in spilling basins . ', Journal of Hydraulic Engineering , ASCE , Vol. 118 , NO. 4 , pp.578-596.

DOI: 10.1061/(asce)0733-9429(1992)118:4(578)