Effects of Different Shaped Baffle Blocks on the Energy Dissipation and the Downstream Scour of a Regulator

The scouring problem caused by the flow movement in the downstream areas of hydraulic structures is an issue that keeps its actuality. In order to prevent these scouring to occur in the downstream, various typed energy dissipaters are placed on the downstream of the hydraulic structures. Factors such as sediment type, the velocity of the stream, and flow regime play an important role in scouring. In order to prevent scouring, the flow’s energy must be dissipated before meeting the sediment. In this study, it is aimed to reduce the amount of scour occurred at the downstream of the weir by using energy dissipaters with different geometries. The flow and scouring events on the weir were modeled in two dimensions using Computational Fluid Dynamics (CFD). The findings were compared for different downstream conditions and the results were discussed in this respect.

Keywords:

CFD Sediment Scour, Regulator,

PDF

___

Aydın, M.C., Işık E., 2015. Using CFD in Hydraulic Structures. International Journal of Scientific and Technological Research. 1(5):7-13.
Aydin, M.C., Ulu, A.E., and Karaduman, Ç., 2017. Investigation of Energy Dissipation and Sediment Scour Over a Regulator Using CFD. CEPPIS 2017, Poland.
Emiroglu, M.E., Gogus, M., Tunc, M., and Islamoglu, K., 2017. Effects of Antivortex Structures Installed on Trapezoidal Labyrinth Side Weirs on Discharge Capacity and Scouring. Journal of Irrigation and Drainage Engineering, 143(6), 04017006.
Flow 3D, 2014. Manual, Sediment Scour Model. Flow-3D User Manual, v11.0.3. Flow Science, Inc.
Meyer-Peter, E., Müller, M., 1948. Formulas for bed-load transport. Proceedings of the 2nd Meeting of the International Association for Hydraulic Structures Research, pages 39–64.
Soulsby, R., 1997. Ch. 9: Bedload transport. in Dynamics of Marine Sand. Thomas Telford Publications, London.
Tao, J., and Yu, X., 2014. Flow and Scour Patterns around Bridge Piers with Different Configurations: Insights from CFD Simulations. In Geo-Congress 2014: Geo-characterization and Modeling for Sustainability (pp. 2655-2664).
Xiong, W., Cai, C. S., Kong, B., and Kong, X., 2014. CFD simulations and analyses for bridge-scour development using a dynamic-mesh updating technique. Journal of Computing in Civil Engineering, 30(1), 04014121.