Downsizing of Oil Reservoir by Bubble Eliminator

Suzuki, Ryushi; Tanaka, Yutaka

doi:10.5739/isfp.2005.291

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…It has been verified that this device efficiently removes the bubbles from the working oil by experimental and numerical analysis, and that temperature rise of fluids can effectively reduce and oxidation of oil can be prevented [6] [7] [8]. Moreover, it has been clarified that the shape of the device influences the removal performance of bubbles [9].…”

Section: Introductionmentioning

confidence: 99%

Numerical evaluation of bubble eliminator for hydraulic systems

Sakama

Suzuki²,

Tanaka

2011

Proceedings of 2011 International Conference on Fluid Power and Mechatronics

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Air bubbles in working oil influence stiffness and efficiency of hydraulic systems, thus it is important for technical issues to eliminate the air bubbles actively from the hydraulic oil. Bubble eliminator is a device that removes air bubbles by using a swirling flow. The purpose of this study is to design optimal shape of the bubble eliminator. Flow and volume fraction of bubble in the bubble eliminator have been studied by numerical analysis. It is numerically evaluated to confirm effects of some parameters: diameter of outlet port, diameter of vent port, inlet flow, height of inlet port, length of inlet tube, length of tapered tube and diameter of inlet tube. The optimal dimensions of the bubble eliminator are proposed and the performance of bubble eliminator is evaluated by numerical simulation.

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Section: Introductionmentioning

confidence: 99%

Numerical evaluation of bubble eliminator for hydraulic systems

Sakama

Suzuki²,

Tanaka

2011

Proceedings of 2011 International Conference on Fluid Power and Mechatronics

Self Cite

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Optimization of Bubble Eliminator Through Numerical and Experimental Investigation

Sakama¹,

Tanaka²,

Suzuki³

2012

Int. J. Automation Technol.

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Air bubbles in working oil affect the stiffness and efficiency of hydraulic systems; thus it is important for technical issues that air bubbles be actively eliminated from the hydraulic oil. A bubble eliminator is a device that uses a swirl flow to remove air bubbles. The shape of the device affects bubble elimination performance, so the selection of shape is the most important parameter in increasing the performance of the device. The purpose of this study is to design a bubble eliminator with an optimal shape. This paper discusses the validity of numerical simulation by comparing, using various diameters of the vent port, the numerical results with the results of the experimental flow visualization. Moreover, we focus on the length of the inlet tube and tapered tube of the bubble eliminator and establish a method of selecting them.

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A Collector of Dissolved Air Using Centrifugal Separation for Underwater Breathing

Park¹,

Park²,

Yun³

et al. 2015

Int. J. Automation Technol.

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This paper investigates a novel underwater breathing apparatus which has no air tank. Instead, it uses centrifugal separation to collect dissolved air. First, a prototype collector is proposed and fabricated. Then, the basic characteristics of various shape parameters are experimentally investigated using tap water to ascertain the optimal design. Next, to confirm the validity of the proposed mechanism, CFD analysis on collection ratio is done using the commercially available STAR-CD tool. After that, a suction device without an additional power source is developed to improve the air collection ratio. Finally, the redesigned collector is tested at different water temperatures, and the air collection results obtained are compared with the results of analysis.

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Downsizing of Oil Reservoir by Bubble Eliminator

Abstract: In mobile hydraulic systems such as commercial vehicles, hydraulic fluids are splashed and agitated in the reservoirs.

Cited by 3 publications

References 3 publications

Numerical evaluation of bubble eliminator for hydraulic systems

Numerical evaluation of bubble eliminator for hydraulic systems

Optimization of Bubble Eliminator Through Numerical and Experimental Investigation

A Collector of Dissolved Air Using Centrifugal Separation for Underwater Breathing

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