Evaluation of the flow forces on a direct (single stage) proportional valve by means of a computational fluid dynamic analysis

Amirante, Riccardo; Moscatelli, P.G.; Catalano, L. A.

doi:10.1016/j.enconman.2006.08.024

Cited by 142 publications

(68 citation statements)

References 3 publications

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“…A lot of scientific papers are dedicated to the issues of their performance characteristics improvement, such as papers of Amirante et al [1][2][3], wherein CFD (Computational Fluid Dynamics) methods are more and more often used to analyze the design of directional valves. The similar trends in the application of CFD methods in the development of hydraulic system components can be seen in the papers of, among others, Del Vescovo et al [4] Chattopadhyay et al [5] and Pan et al [6].…”

Section: Introductionmentioning

confidence: 99%

Multifunctional four-port directional control valve constructed from logic valves

Lisowski

Czyżycki

Rajda³

2014

Energy Conversion and Management

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Section: Introductionmentioning

confidence: 99%

Multifunctional four-port directional control valve constructed from logic valves

Lisowski

Czyżycki

Rajda³

2014

Energy Conversion and Management

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“…Some authors use the artificial intelligence method for velocity components prediction [13], others developed new numerical approaches in combination with standard CFD methods to improve the calculation method or to expedite the simulation procedure [14]. Many authors use simplified axisymetrical CFD models [3,15,16,17]. The numerical CFD method described in this paper offers practical means for solving many engineering problems concerning the dynamic fluid flow [15,18,19,20].…”

Section: Flow-force Reduction Methodsmentioning

confidence: 99%

“…Many authors use simplified axisymetrical CFD models [3,15,16,17]. The numerical CFD method described in this paper offers practical means for solving many engineering problems concerning the dynamic fluid flow [15,18,19,20].…”

Section: Flow-force Reduction Methodsmentioning

confidence: 99%

CFD simulation of flow force reduction in hydraulic valves

2015

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Original scientific paper This paper describes some possible methods for the reduction of the axial static flow forces in hydraulic sliding-spool and small on/off seat valves. These forces increase with the increase in the volume flow and the pressure difference and thus determine higher actuation forces for the control of the valve unit. This results in the necessary use of more powerful actuators for the direct control of hydraulic valves. The topic is therefore very relevant from the energy consumption point of view regarding the actuation of hydraulic valves. To make the use of low-power actuators for the control of directly actuated valves possible also for higher hydraulic power the flow forces acting on the valve piston in the axial direction must be reduced. This paper presents one of the possible solutions with such a design of the hydraulic valve housing and the spool that the flow stream of the fluid through the valve causes minimal axial static forces. The main influential geometry parameters of the sliding-spool and seat valve are defined and analysed in detail using the CFD (Computational Fluid Dynamics) simulation tool Ansys CFX and experimental analysis for the validation of the numerical fluid model of the valve. The results of the research are very promising and prove that the axial component of the flow forces and therefore the necessary actuation force can be reduced significantly just by modifying the geometry of the valve housing and spool. Thus the power consumption of the actuator is minimised and the valve dynamic characteristics are improved at the same time.Keywords: CFD simulation; experimental analysis; fluid flow forces; geometry optimisation; seat valve; sliding-spool valve CFD simulacija smanjenja sila protoka fluida u hidrauličnom ventiluIzvorni znanstveni članak Ovaj članak opisuje neke moguće metode za smanjenje statičnih sila protok ulja u hidrauličkom ventilu sa uzdužnim klipom i malim "on/off" sjedežnim ventilom. Sa porastom strujnog toka i razlike tlakova dolazi do povećanja aksijalnih statičnih sila što prouzročava upotrebu viših potisni sila odnosno veću potrošnju energije pri upravljanu ventila. Spomenjeno rezultira obaveznom upotrebom aktuatora veće snage za direktno upravljanje hidrauličkog ventila. Sa stajališta potrošnje energije pri upravljanju ventilom ova tema je veoma važna. Da bi omogućili upotrebu aktuatora niže snage za direktno upravljane ventila s visokim protokom ulja, potrebno je smanjiti aksijale sile koje djeluju na klip u ventilu.Ovaj istraživački rad predstavlja jedno od mogućih rješenja s takvim dizajnom kućišta hidrauličkog ventila i klipa da strujni tok ulja kroz ventil uzrokuje minimalne statične aksijalne sile. Glavni parametri geometrije ventila sa uzdužnim klipom i malim "on/off" ventila su definirani i detaljno analizirani pomoću CFD (Computational Fluid Dynamics) simulacijskoj alata Ansys CFX. Poslije toga provedena je eksperimentalna analiza za validaciju numeričkog modela ventila. Rezultati istraživanja su vrlo obećavajući i dokazuju da aksi...

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“…Valdés showed that the proposed method correctly estimates and predicts valve parameter values and characteristics as long as the main geometry features are maintained. An evaluation of flow forces on a direct (single stage) proportional spool valve by means of CFD methods was performed by Amirante et al [12], while Herakovič in [13] carried out a similar analysis for a sliding-spool valve. An interesting CFD analysis of the flow structure inside a pressure-regulating spool valve using the k-turbulence model was conducted by Chattopadhyay et al [14], while related research on a flapper-nozzle pilot valve was carried out by Aung et al [15].…”

Section: Introductionmentioning

confidence: 99%

CFD analysis of the characteristics of a proportional flow control valve with an innovative opening shape

Lisowski

Filo

2016

Energy Conversion and Management

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Evaluation of the flow forces on a direct (single stage) proportional valve by means of a computational fluid dynamic analysis

Cited by 142 publications

References 3 publications

Multifunctional four-port directional control valve constructed from logic valves

Multifunctional four-port directional control valve constructed from logic valves

CFD simulation of flow force reduction in hydraulic valves

CFD analysis of the characteristics of a proportional flow control valve with an innovative opening shape

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