Simulation of Accumulator Influence on Hydraulic Shock in Long Pipe

Bureček, Adam; Hružík, Lumír; Vašina, Martin

doi:10.12776/mie.v14i1-2.461

Cited by 3 publications

(4 citation statements)

References 4 publications

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“…This can be interpreted by developing flow and hydraulic shock when a sudden pressure occurs at the pipe. Here, sudden pressure is a non-stationary flow and sudden change of velocity [25]. Excessive deformation and stress can occur by the abrupt acceleration in a pipe [26].…”

Section: Resultsmentioning

confidence: 99%

Farklı Isı ve Basınç Koşulları Altında Düz Bir Boru İçin Tek Yönlü Akışkan-Yapı Etkileşimleri Analizi

CANBOLAT

2023

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi

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Numerical studies on stress, deformation, and damages due to fluid flow have been highly carried out using Fluid-Structure Interaction (FSI) in recent years. FSI is highly efficient in investigating a solid domain deformed by the fluid flow. In this study, a one-way fluid-structure interaction study is performed by a straight pipe under different pressure and thermal conditions. Here, the thermophysical properties of the fluid and mechanical properties of the solid domain can be subjected to change during fluid flow. An aluminum straight pipe with a 1 mm wall thickness is operated under 1 Bar, 5 Bar, and 10 Bar with three different surface temperatures -10ºC, 20ºC, and 50ºC. This study aims to investigate the structural variation of aluminum by the temperature and pressure change of operating fluid in the pipe. Variation of thermophysical properties of fluid by heated pipe surface is integrated into the numerical analysis by generated functions. Numerical analysis showed that the variation of temperature in operating fluid highly affects the fluid characteristic and the structural response of the solid domain by different temperatures. An increase in the operating pressure caused maximum deformation to approximately %100 from 1 Bar to 5 Bar, and approximately %120 from 1 Bar to 10 Bar for the adiabatic process as expected but in the heating conditions stress is nearly three times higher than cooling conditions. As a result, one-way FSI solutions are highly effective in investigating the deformed solid domain as a result of flow, thermal, and operating conditions.

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Section: Resultsmentioning

confidence: 99%

Farklı Isı ve Basınç Koşulları Altında Düz Bir Boru İçin Tek Yönlü Akışkan-Yapı Etkileşimleri Analizi

CANBOLAT

2023

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi

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“…The pressure in front of the seat valve was measured by the pressure sensor PS. The measurement was also performed at other flows (in this case at 10 dm 3 •min -1 and 20 dm 3 •min -1 ). Measured data were subsequently evaluated using Hydrowin and MS Excel.…”

Section: Description Of Experimental Measurementmentioning

confidence: 99%

“…As in the case of the viscosity, the oil compressibility is accompanied by damping of pressure pulsations during the hydraulic shock. It is possible to eliminate the hydraulic shock by an accumulator, which is able to accumulate excess pressure energy [3]. Furthermore it is possible to eliminate the hydraulic shock by slower closing of the seat valve [4].…”

Section: Introductionmentioning

confidence: 99%

Effect of Oil Flow Velocity on Hydraulic Shock

Bureček

Hružík

Vašina

2015

AMM

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The article is focused on experimental investigation of oil dynamics in long pipe at non-stationary flow. The non-stationary flow is realized by sudden closing of seat valve at the end of the long pipe. For this reason the oil pressure is suddenly increased and hydraulic shock is created. There is described the influence of oil flow velocity on hydraulic shock in this article. The pressure is measured near the seat valve. Furthermore this process is mathematically simulated using Matlab SimHydraulics software and is compared with the experiment.

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“…The energy-saving analysis of the system carried out by Wendel 15 investigated the source of hydraulic system losses using the dynamic simulation approach and recommended alternative improved configurations that will lead to reduced energy requirements. Burecek et al 16 focused on experimental measurement and mathematical simulation of hydraulic system using MATLAB SimHydraulics software. The pressure response is mathematically simulated by inserting a membrane accumulator which results in reduced pressure pulsations and increased frequency of oscillation.…”

Section: Introductionmentioning

confidence: 99%

Analysis of decay characteristics of an accumulator in an open-circuit hydrostatic system with pump loading

Kumar

Dasgupta

Das

2017

Proceedings of the Institution of Mechanical Engineers, Part I:

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The effects of the decay characteristics of a hydraulic accumulator on the responses of the hydrostatic drive system used in mining vehicles are studied in this article. The system considered for the analysis basically consists of a hydraulic pump, hydro-motor, accumulator and a loading circuit. The studies have been carried out with respect to two different sizes of accumulators. The system model has been made in MATLAB/Simulink® environment. The simulation test results are obtained with respect to the hydro-motor speeds and the system pressure at different resistive loads and capacities of the accumulator and they are verified with the experimental test data. Using the validated model, the parametric studies are also made on the speed responses of the hydrostatic drive for different precharge pressures of the accumulator and inertial load on the motor shaft. The studies made in this article may be useful for the selection of proper capacity of accumulators incorporated in the hydrostatic drive system in mining vehicles.

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Simulation of Accumulator Influence on Hydraulic Shock in Long Pipe

Cited by 3 publications

References 4 publications

Farklı Isı ve Basınç Koşulları Altında Düz Bir Boru İçin Tek Yönlü Akışkan-Yapı Etkileşimleri Analizi

Farklı Isı ve Basınç Koşulları Altında Düz Bir Boru İçin Tek Yönlü Akışkan-Yapı Etkileşimleri Analizi

Effect of Oil Flow Velocity on Hydraulic Shock

Analysis of decay characteristics of an accumulator in an open-circuit hydrostatic system with pump loading

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