| Autor: |
Shah, Saad Alam, Ghani, Usman, Tariq, Muhammad Hasnain, Iqbal, Kashif, Khalid, Waleed |
| Předmět: |
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| Zdroj: |
Technical Journal of University of Engineering & Technology Taxila; 2024 Special Issue, p749-757, 9p |
| Abstrakt: |
Circular crested weirs have been used for a long time due to their simplicity in design, low cost and accurate measurement. The Computational Fluid Dynamics (CFD) based software ANSYS FLUENT has been used in this investigation. The CFD model has been applied to explore various flow features over a circular crested trapezoidal weir. The volume of fluid (VOF) technique was used in this work. Two weir conditions with and without roughness elements and three discharges values for each weir case were used. The flow characteristics investigated include coefficient of discharge, water surface profiles and velocity profiles. The roughness element remained submerged in all the simulation cases. The k-1 turbulence model was used for the CFD simulation. After validation, the flow characteristics like the free surface profiles, coefficient of discharge, vertical velocity profiles at the upstream and downstream of the weir and the velocity contours were investigated for varying discharges and roughness. A comparison was drawn for these properties for a channel with and without roughness element. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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