Pressure transients in incompressible fluid pipeline networks

Rao, C. V.; Eswaran, K.

doi:10.1016/s0029-5493(99)00034-5

Cited by 6 publications

(7 citation statements)

References 5 publications

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“…Also for pipe No 430, Figure (9) shows the shape of the pressure wave for the actual value of (C), while Figures (10) and (11) exhibit the same of this wave for decreasing and increasing the value of (C).…”

Section: Influence Of Pipe Frictionmentioning

confidence: 89%

“…At time about 80 sec, Figure (9) shows the pressure wave amplitude approximately ranges from 85 m to 63 m for the estimated value of (C), and ranges from 75 m to 60 m for decreasing (C) as shown in figure (10), and ranges from 90 m to 65 m for increasing the value (C) as shown in figure (11).…”

Section: Influence Of Pipe Frictionmentioning

confidence: 91%

“…Despite this, there is a feeling among practitioners that networks are somehow intrinsically more robust than series pipe systems (Karney and McInnis, 1994). Kameswara and Eswaran (1999) developed a computer program, HYTRAN, using the method of characteristics for calculating the time dependent head and velocity of water in a complex pipeline network due to a pump failure and load reduction on a turbine. The method had to be modified using a finite element method FEM (Izquierdo and Igiesias, 2002).…”

mentioning

confidence: 99%

See 2 more Smart Citations

Protection of Pipe Networks from Water Hammer Effects Using Air Vessels (Case Study: Bosat Kareem El-Dein Water Network) (Dept. C (Irrigation ))

Alfy

Rageh

Zidan

2016

Bulletin of the Faculty of Engineering. Mansoura University

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Water hammer phenomenon is usually happened in water distribution networks due to pumps power failure or sudden closure, opening valves which lead to generate massive positive and negative pressures that may be catastrophic. In this research Bentley HAMMER Vi 8 is used to study the effect of roughness coefficient on water hammer wave in pipes. There are different methods to control and reduce these transient effects such as surge tanks, air vessels and pressure reducing valves. Choosing one of these methods depends on the design criteria, location and topography that strongly affect the

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Section: Influence Of Pipe Frictionmentioning

confidence: 89%

Section: Influence Of Pipe Frictionmentioning

confidence: 91%

mentioning

confidence: 99%

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Protection of Pipe Networks from Water Hammer Effects Using Air Vessels (Case Study: Bosat Kareem El-Dein Water Network) (Dept. C (Irrigation ))

Alfy

Rageh

Zidan

2016

Bulletin of the Faculty of Engineering. Mansoura University

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“…The transform equation of a single straight pipeline in frequency-domain was given by Kameswara and Eswaran (1999):…”

Section: Frequency Responses Of Pressure Pulsationmentioning

confidence: 99%

Dynamic reliability of aircraft hydraulic pipelines under random pressure pulsation and vibration

Liu

Liu²,

Yue³

2010

Multidiscipline Modeling in Materials and Structures

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Purpose -Pressure pulsations and vibration working condition lead to dynamic troubles in hydraulic devices. It is highly desirable to be able to estimate the durability at the design stage so that appropriate maintenance period can be determined for safety and reliability. The purpose of this paper is to propose a quantitative evaluation method for pulsation and vibration based on reliability. Design/methodology/approach -Pressure pulsations are approximately treaded as a stationary random process. The principle of transform function and fluid network chain rules are used to disassemble the hydraulic power unit into the series-system. Mean square deviation of dynamic stress under the pumping source white noise exciting was calculated based on frequency responses. Statistical regularity of displacement and stress responses of pipelines under external random vibration are obtained by the spectrum analysis. Both the first-passage failure criterion and fatigue damage accumulation failure criterion are adopted to analyze the dynamic pressure reliability of hydraulic pipelines. Findings -The terminal joint, bellow pipe and pipe clamps are verified as the weak location of the pipelines. The mean square deviations of pulsations and vibration response influence the pipelines reliability. The results indicated that the preventative design method of controlling the pressure below 10 per cent of rated pressure does not meet the security specification of the hydraulic power unit. Originality/value -The paper proposes a quantitative evaluation method for random pressure pulsation and external vibration based on reliability, which provides a new approach for the safety assessment and design of hydraulic pipelines.

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“…The model was based on the use of the MOC to obtain steady, transient, and oscillatory conditions of operation. Kameswara and Eswaran [5] developed a computer program, HYTRAN, using the method of characteristics for the calculation of time dependent head and velocity of fluids in a complex pipeline network for events such as pump failure, load reduction on a turbine, etc. The model considered only a single-phase fluid flow.…”

Section: Introductionmentioning

confidence: 99%

Simulation of transient flow in pipeline systems due to load rejection and load acceptance by hydroelectric power plants

Afshar

Rohani

Taheri

2010

International Journal of Mechanical Sciences

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Pressure transients in incompressible fluid pipeline networks

Cited by 6 publications

References 5 publications

Protection of Pipe Networks from Water Hammer Effects Using Air Vessels (Case Study: Bosat Kareem El-Dein Water Network) (Dept. C (Irrigation ))

Protection of Pipe Networks from Water Hammer Effects Using Air Vessels (Case Study: Bosat Kareem El-Dein Water Network) (Dept. C (Irrigation ))

Dynamic reliability of aircraft hydraulic pipelines under random pressure pulsation and vibration

Simulation of transient flow in pipeline systems due to load rejection and load acceptance by hydroelectric power plants

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