Bibliographic citations
Terrones, J., (2024). Estudio del comportamiento hidráulico de la válvula Howell-Bunger mediante simulación aplicando el programa ANSYS CFX [Tesis, Universidad Privada Antenor Orrego]. https://hdl.handle.net/20.500.12759/52211
Terrones, J., Estudio del comportamiento hidráulico de la válvula Howell-Bunger mediante simulación aplicando el programa ANSYS CFX [Tesis]. PE: Universidad Privada Antenor Orrego; 2024. https://hdl.handle.net/20.500.12759/52211
@misc{renati/1345659,
title = "Estudio del comportamiento hidráulico de la válvula Howell-Bunger mediante simulación aplicando el programa ANSYS CFX",
author = "Terrones Orbegoso, Josué Enrique",
publisher = "Universidad Privada Antenor Orrego",
year = "2024"
}
Fixed cone valves, also known as Howell-Bunger valves, are devices used to safely reduce flow energy in medium to high head dams. These valves direct the outlet flow into a conical hollow jet, which requires a large area for energy dissipation. Flow control is carried out through mechanical or hydraulic regulation systems, and its operation requires minimal energy consumption. The purpose of this research work was to analyze the hydraulic behavior of Howell-Bunger valve prototypes, analyzing the different positions of the cylindrical sliding sleeve under operating conditions of constant flow and hydraulic jump. For both operating conditions analyzed, ANSYS-CFX was used as a numerical simulation software package based on the Computational Fluid Dynamics (CFD) for the construction of the simulation model. For validation, the results of the CFD model were compared with the experiments of Tsalov (2017), predicting with sufficient precision the flow rate vs. pressure drop curves, not exceeding the 15% admissible for practical engineering problems. Furthermore, the CFD model is capable of representing with sufficient approximation the theoretical values of Taco (2018) and the experimental values of Tsalov (2017) corresponding to the flow coefficient when the valve openings reach 70% of their maximum value. In addition, the fluid-dynamic behavior of the valves was analyzed under both operating scenarios, allowing the mechanisms that govern the formation of turbulence and its dissipation to be identified in order to increase understanding about the operation of such devices. In summary, the present research work allowed us to understand the hydraulic behavior of the fixed cone valve, obtaining relevant information about the discharge coefficients in dissipative valves and the operating parameters that influence their performance. These results are fundamental as they open new forms of analysis for the design and optimization of this type of devices used in hydraulic engineering.
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