Share This Article:

Multiphase Flow Simulations through Tarbela Dam Spillways and Tunnels

Abstract Full-Text HTML Download Download as PDF (Size:1474KB) PP. 532-539
DOI: 10.4236/jwarp.2010.26060    6,618 Downloads   12,193 Views   Citations

ABSTRACT

Tarbela dam is one of the largest earth filled dam in the world used for power generation and irrigation purposes. Like all reservoirs the sediments inflow in the Tarbela reservoir has resulted in reduction in water storage capacity and is also causing damage to the tunnels, power generating units and ultimately to the plant equipment. This numerical study was performed to predict the flow patterns and characteristics in Tarbela dam. Tunnel 3 and 4 inlets; originally on the bed level were raised in the 3-D model and meshed. Analysis was performed using multiphase flow (water and air) for maximum inflow in the reservoir, i.e., considering summer season and discharging water through different locations, i.e., tunnels and spillways. Pressure, velocities, flow rate and free surface height results obtained were found in good agreement with the analytical and existing results where available. Results show uneven discharge through each gate due to maximum velocity near exits and overall stagnant phenomena of water within the reservoir. Maximum velocity was observed along the spillways outlet. Strong vortex motion was observed near the spillways outlet and tunnel inlets. New design of Tunnel 3 and 4 were suggested to WAPDA in order to decrease the sediment inflow and improvements in design of the spillways were suggested.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

M. Abid and M. Siddiqi, "Multiphase Flow Simulations through Tarbela Dam Spillways and Tunnels," Journal of Water Resource and Protection, Vol. 2 No. 6, 2010, pp. 532-539. doi: 10.4236/jwarp.2010.26060.

References

[1] E. L. Tate and F. A. K. Farquharson, “Simulating Reser-voir Management under the Threat of Sedimentation: The Case of Tarbela Dam on the River Indus,” Water Resources Management, Vol. 14, No. 3, 2000, pp. 191-208.
[2] B. R. Rust, “Sedimentation in Fluvial and Lacustrine Environments,” Hydrobiologia, Vol. 91, 1982, pp. 59-70.
[3] T. S. Fuat entürk, “Hydraulics of Dams and Reservoirs,” Water Resources Publications, Littleton, 1994.
[4] C. T. Yang, “Applications of GSTARS Computer Models for Solving River and Reservoir Sedimentation Problems,” Tianjin University and Springer-Verlag, Tianjin, 2008.
[5] Water and Power Development Authority, “Periodic Inspection Report. Pakistan,” Pakistan, 2007.
[6] Department of Survey, “Report on Sedimentation Profiles Pakistan,” Water and Power Development Authority, 2007.
[7] Consultants, TAMS, “Tarbela Dam Project,” Drawings, Water and Power Development Authority, Vol. 4, 1968.
[8] Consultants, TAMS, “Tarbela Dam Project,” Drawings, Water and Power Development Authority, Vol. 5, 1968.
[9] Consultants, TAMS, “Tarbela Dam Project,” Drawings, Water and Power Development Authority, Vol. 61968.
[10] M. Francisco, A. M. G. Lopes and V. A. F. Costa, “Optimization of a Sanitary Discharge Valve Using a Nume- rical Approach,” Proceedings of the 5th WSEAS International Conference on Simulation, Modeling and Opti- mization, Tenerife, 2005.
[11] ANSYS Europe, Ltd, “ANSYS CFX Solver Modeling Guide,” ANSYS CFX Release 11.0. © 1996-2006.
[12] G. Iaccarino, “Prediction of a Turbulent Seperated Flow Using Commercial CFD Codes,” Journal of Fluids Engineering, Vol. 123, 2001, pp. 819-828.
[13] Hydraullics Department, “Tarbela Dam Hydrology Report,” Water and Power Development Authority, 2008.
[14] S. Yoo, K. Hong and M. Hwang, “A 3-Dimensional Numerical Study of Flow Patterns around a Multipurpose Dam,” Proceedings of the 5th International Conference on Hydroinformatics, Cardiff, 2002.
[15] J. H. Ferziger and M. Peric “Computational Methods for Fluid Dynamics,” Springer, 3rd Edition, 2001.

  
comments powered by Disqus

Copyright © 2019 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.