Performance of the Gomaspan Dam's Stepped Spillway Against Cavitation using CFDcity

Authors

DOI:

https://doi.org/10.25156/ptj.v12n2y2022.pp47-52

Keywords:

CFD, Renormalized k-ԑ turbulent model, stepped spillway, Cavity index, Fluent

Abstract

This study aims to determine how well the stepped spillway at Gomaspan dam performs in terms of cavity index. For this purpose, a computational fluid dynamics (CFD) code called FLUENT is used. To begin, the code was validated by applying it to the experiments work of (Li et al. 2021), and the findings demonstrate great agreement between CFD and the aforementioned experimental data. Second, the algorithm is applied to the designed stepped spillway of the Gomaspan dam, and the cavity index is obtained at each step. The results show that the design is unsatisfactory, and the steps are particularly vulnerable to cavitation because the inception point located at step 19 and the velocity of water after inception point ranges between (22m/s-34.6m/s), it may also cause the cavitation after a long period of time.

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References

Abo, A., 2013. A three-dimensional flow model for different cross-section high-velocity channels (Doctoral dissertation, University of Plymouth).

Frizell, K.W. and Renna, F.M., 2011. Laboratory studies on the cavitation potential of stepped spillways. Apelt, CJ (Editor); Ball, J (Editor), pp.2420-2427.

Frizell, K. H. & Mefford, B. W. (1991) 'Designing spillways to prevent cavitation damage'. Concrete International, 13 (5). pp 58-64.'

Hirt, C.W. and Nichols, B.D., 1981. Volume of fluid (VOF) method for the dynamics of free boundaries. Journal of computational physics, 39(1), pp.201-225.

Kermani, E.F., Barani, G.A. and Ghaeini-Hessaroeyeh, M., 2013. Investigation of cavitation damage levels on spillways. World Applied Sciences Journal, 21(1), pp.73-78.

Li, G., Zhang, H., Li, X., Guo, L., Gao, Y. and Cai, D., 2021. Numerical Simulation of Stepped Spillways with Front Step Deformation. Mathematical Problems in Engineering, 2021.

Novak, P., 2007. Moffat. AIB, Nalluri, C. and Narayanan, R., Hydraulic Structures.

Payman Karami, S., Khosrojerdi, A. and Shafai Bajestan, M., 2014. Numerical Modelling of Hydraulic Flow in Dam Stepped Spillway and Study of Cavitation Phenomenon. European Online Journal of Natural and Social Sciences: Proceedings, 3(3 (s)), pp.pp-283.

Raza, A., Wan, W. and Mehmood, K., 2021. Stepped Spillway Slope Effect on Air Entrainment and Inception Point Location. Water, 13(10), p.1428.

Reisi, A., Salah, P. and Kavianpour, M.R., 2015. Impact of chute walls convergence angle on flow characteristics of spillways using numerical modeling. Int. J. Che, Env & Bio. Sci, 3(3), pp.245-251.

Varshney, R. S., Gupta, S. C., & Gupta, R. L. (1979). Theory and design of irrigation structures. Vol. 2, Canal and storage works. Roorkee: NEM Chand & Bros.

Saleh, S.M. and Husain, S.M., 2020. Computational Study to Predict the Free-Surface Flow over Non-uniform Stepped Spillway Using ANSYS-CFX. Polytechnic Journal, 10(1), pp.43-50

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Published

2023-04-16

How to Cite

A, A. A. (2023). Performance of the Gomaspan Dam’s Stepped Spillway Against Cavitation using CFDcity. Polytechnic Journal, 12(2), 47-52. https://doi.org/10.25156/ptj.v12n2y2022.pp47-52

Issue

Vol. 12 No. 2 (2022): Volume12 - Number2

Section

Research Articles

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Copyright (c) 2023 Abo A. A

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