CFD Analysis to Predict Flow Behavior for Design and Operation of Tarbela Dam Reservoir for Different Environmental Conditions

Q3 Engineering

International Journal of Thermofluid Science and Technology Pub Date : 2022-02-12 DOI:10.36963/ijtst.2022090302

M. Abid, M. U. R. Siddiqi, A. A. Noon, M. Tahir, A. Sharif, S. Siddiqi, N. Ullah, T. Habib, M. Shayan

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Abstract

Tarbela Dam is one of the world largest filled dams with a capacity of 13.69 km³. It is the backbone of Pakistan, and it is used for both power generation and irrigation. Like all dam reservoirs, sedimentation decreases the life of the Tarbela dam reservoir and affects the power generating unit and tunnel equipment’s and instruments. The Finite Volume Method was used to conduct a CFD analysis to investigate different parameters that influence sedimentation. The analysis was carried out using multiphase flow (air and water) considering the summer season for maximum reservoir inflow and discharge water through spillways and tunnels. Boundary conditions were applied to a 3D geometric model that had been meshed. The spillway outlet was found to have the highest velocity. Near the spillways outlet and tunnel inlets, strong vortex motion was observed. WAPDA were suggested to redesign tunnels 3 and 4 in order to reduce sediment inflow, as well as to improve the design of the spillways.

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CFD分析预测不同环境条件下Tarbela大坝水库设计和运行的流动特性

塔尔贝拉大坝是世界上最大的水坝之一，容量为13.69立方千米。它是巴基斯坦的支柱，既用于发电又用于灌溉。与所有大坝水库一样，泥沙淤积降低了塔贝拉大坝水库的寿命，并影响了发电机组和隧道设备和仪器。采用有限体积法进行CFD分析，探讨不同参数对沉降的影响。采用多相流(空气和水)进行分析，考虑夏季最大入库水量和通过溢洪道和隧道排出的水量。将边界条件应用于已划分网格的三维几何模型。溢洪道出口流速最高。在泄洪道出水口和隧洞进水口附近，观测到强烈的涡旋运动。建议WAPDA对3号和4号隧道进行重新设计，以减少泥沙流入，并改进溢洪道的设计。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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International Journal of Thermofluid Science and Technology Engineering-Mechanical Engineering

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