Numerical Simulation of Velocity Distribution in the River Lateral Intake Using the SSIIM2 Numerical Model

Year 2015, Volume: 36 Issue: 3, 1473 - 1486, 13.05.2015

Edris Merufınıa , Adel Asnaasharı

Abstract

Abstract.     Intakes are generally used in water distribution networks, irrigation channels, sewage networks, water, and wastewater treatment facilities as an input to power utilities, and so on. Due to the flow complexity and also the Effects of scale, physical models can not solely provide a clear perception of the physics governing the flow field and it is necessary to study this phenomenon numerically along with field and Experimental studies. In the first section of this study, the numerical simulation of flow   has been performed in the direct path of rectangular channel by Using SSIIM2 software. This software solves Navier-Stokes equations by Finite-Volume Method (FVM). The flow calculations were performed in the three dimensional model using K-ε-RNG and K-ε-Standard turbulence models. The K-ε-Standard turbulence model showed the best results according to the comparison of velocity profiles with the experimental results of Barkdollet al. (1998) and the results of other numerical studies. Then, in the second section, using this turbulence model, the flow velocity profiles at different sections of the main channel and Intake were compared with the experimental and numerical results of other researchers; and a good agreement has been found between them. The comparison of the obtained results with experimental and numerical results of other researchers indicates that this numerical model can well predict the flow velocity profile in the different sections of the main channel and intake. Given the satisfactory results obtained from the above comparisons, the last section presents a numerical study of other parameters such as shear stress and pressure distribution in the main channel and intake.

Keywords

lateral intake, flow velocity profile, shear stress and pressure distribution, SSIIM2

References

• Shafaeibajestan et al, (2011), Experimental and numerical study of the flow pattern 30 degrees split intake of trapezoidal channels, Journal of Science and Technology of Agriculture and Natural Resources, Soil and Water Sciences, Vol XV, Number Fifty- Seven, Iran
• Mohammedans, SA., Salehineyshaboori,.a., virtuous, H., Wahhabi, H., (2013), rounded edges at the intersection of 90 degrees down arched channels directly on the flow pattern, The National Conference on Sustainable Development with a focus on Disaster risk Reduction, the institution of higher education rising, Mashhad, Iran
• Sayedian. M, ShafaeiBajestan, d., (2011), the size and strength of the vortex spiral flow at lateral intakes, Journal of Water and Wastewater, No. 4, Isfahan, Iran
• Shakibaiinia A., Zraty, A.r., MajdzadehTabatabai, M.r., (2008), using three-dimensional numerical model for the simulation of complex phenomena River Engineering, College of Engineering, Volume 42, Number 4, page 443 to 455, Tehran, Iran
• KaramiMoghaddam, M.., CDs, QM, Shafaeibajestan, d., (2006), the flow pattern in the pond at 90 ° C with inlet roundness SSIIM2 model and comparison with physical modeling, Engineering congress Engineering, Tehran University, Iran
• Montaseri, H., Ghodsian, M., Shafaiefar, M., SalehiNeishabouri, A. A., Dehgahni, A.A. (2008). Experimental investigation of 3D flow field and scouring in a 180 degree bend with a lateral intake.” Gorgan J. of Agri. Sci. and Natural Resources, 15 (2), 225-533.
• Barkdoll, B.D., Hagen, B.L., and Odgaard, A.J.,(1998). Experimental Comparison of Dividing Open Channel with Duct Flow in T-junction. Journal of Hydraulic Engineering. Vol. 124, No. 1, pp. 92-95.
• Shettar, A. S., and Murthy, K. K.,(1996)., A Numerical Study of Division Flow in Open Channels. Journal of Hydraulic Research, Vol. 34, No. 5, pp. 651-675.
• Olsen, N. B. R., (2006)., A Three dimensional Numerical Model for Simulation of Sediment Movements in Water Intakes with Moltiblock Option. Department of Hydraulic and Environmental Engineering, The Norwegian University of Science and Technology