Fluid Transients and Wave Propagation in Pressurized Conduits Due to Valve Closure

Nerella, Ruben; Rathnam, E. Venkata

doi:10.1016/j.proeng.2015.11.454

Cited by 18 publications

(13 citation statements)

References 9 publications

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“…Al analizar que la magnitud numérica de la sobrepresión, producida con el golpe de ariete, depende de varios factores, la relación más directamente observable es con el tiempo en el que se interrumpe la continuidad del flujo, por lo que si tenemos la capacidad de calcular y prevenir las velocidades de cierre de nuestros dispositivos hidráulicos, tendremos la capacidad de control de los dañinos efectos de las sobrepresiones en el golpe de ariete [6], [7].…”

Section: El Fenómeno Del Golpe De Arieteunclassified

Prevención del golpe de ariete mediante el control del tiempo de cierre, al usar válvulas hidráulicas automatizadas

Guevara-Rodríguez

Vargas-Obando²,

Quesada-Chanto³

2021

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Uno de los grandes retos que enfrentamos, al calibrar sistemas automáticos en riego y acueductos, es que la velocidad de los activadores eléctricos es muy rápida, lo que reduce la velocidad de respuesta de las válvulas en términos de apertura y cierre a algunos cuantos segundos. Estos cierres repentinos en la línea de conducción provocan ondas en el interior de la tubería que producen sobrepresiones que pueden generar daños en nuestro acueducto. El presente trabajo ofrece un enfoque alternativo al control y prevención del golpe de ariete, al analizar la relación entre el tiempo de cierre de una válvula en una conducción con pendiente positiva, el respectivo aumento en la línea piozométrica y cómo se puede regular esto mediante la calibración de la velocidad de cierre en el llenado de la cámara superior de las válvulas hidráulicas. Para la comprobación de los resultados, se muestra el caso de un proyecto de invernaderos, hidropónico, que opera con riegos automáticos, donde el tiempo de apertura y cierre de válvulas fue calibrado mediante el control del llenado de las cámaras de las válvulas.

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Section: El Fenómeno Del Golpe De Arieteunclassified

Prevención del golpe de ariete mediante el control del tiempo de cierre, al usar válvulas hidráulicas automatizadas

Guevara-Rodríguez

Vargas-Obando²,

Quesada-Chanto³

2021

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“…In operational networks, transients can be produced by a variety of sources, including but not limited to; valve operations, pump trips, flow demand and burst events. Valve operations are the most common instigators of dynamic events [13][14][15][16] , and the resulting transients are representative of most transients recorded in operational systems. Consequently, valve operations were selected for these laboratory experiments to generate all transients induced.…”

Section: Instigating Transientsmentioning

confidence: 99%

A novel demonstration of adhered material mobilisation by hydraulic transients

Weston

Collins

Boxall

2019

Environ. Sci.: Water Res. Technol.

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“…The importance of carrying out pressure surge analysis cannot be over emphasised, transients analyses are carried out in pipelines networks in order to verify whether the networks are operating within acceptable maximum operating pressure as well meets the regulations and standards [5]. [6] Reported that pressure surge analysis and evaluation play a very vital role in the design, operation and maintenance of new and existing pressurized pipeline systems. Also [6 and 7] stated that pressure surge occurs in a pipeline network as a result of either pump failure or due to sudden valves closure or opening.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Effects of Hydraulic Transient due to Instantaneous Valve Closure in a Petroleum Pipeline

Muhammad¹,

Nasir²,

Ayo³

et al. 2020

NIPES

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Pressure surge analysis of petroleum pipeline transporting automotive gas oil (AGO) also known as Diesel oil was carried out in this research work. Pressure transient analysis is often more significant than the steady state analysis that engineers usually use in pipeline design. Pressure transient analysis helps to understand the additional pressures the pipeline can be subjected to as a result of instantaneous rapid valve closures or pump failure. The fluid pressure and flow rate in the pipeline system may change significantly at some intervals of time due to the valve closure and such types of unsteady situations are encountered more often in pipelines where the valves are suddenly closed. In this paper, pressure surge due to instantaneous valve closure in a petroleum pipeline conveying AGO was studied in a virtual environment. WANDA Transient 4.5.1210 commercial software was used for the analysis of the pressure surge in the pipeline due to instantaneous valve closure time of 4.75s. It was observed in the study that pressure at some nodes rise significantly up to about 1400 kPa against the initial inlet pressure of 120 kPa due to the instantaneous valve closure and it drastically drops at some nodes to negative pressure of about -100 kPa and hence the formation of cavitations. The analysis showed that the magnitude of the pressure surge decreases as the valve closure is increased.

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Fluid Transients and Wave Propagation in Pressurized Conduits Due to Valve Closure

Cited by 18 publications

References 9 publications

Prevención del golpe de ariete mediante el control del tiempo de cierre, al usar válvulas hidráulicas automatizadas

Prevención del golpe de ariete mediante el control del tiempo de cierre, al usar válvulas hidráulicas automatizadas

A novel demonstration of adhered material mobilisation by hydraulic transients

Investigation of the Effects of Hydraulic Transient due to Instantaneous Valve Closure in a Petroleum Pipeline

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