Numerical modeling of dynamic characterics for combined valves in multiphase pump

Yi, Ma; Luo, Huashuai; Zhang, Zhihong; Zhou, Sizhong; Deng, Hui‐Xiong

doi:10.1080/19942060.2017.1292409

Cited by 14 publications

(10 citation statements)

References 21 publications

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“…As a common power source, RPP uses the reciprocating movement of the plunger to periodically change the volume of the working chamber to transport fluid; now, it has become an indispensable part in many fields, such as automobiles and construction machinery [18,19]. The conventional RPP mostly uses one-way valves or solenoid valves for flow distribution [20][21][22]. The one-way valve has hysteresis when opening and closing; especially at high speed, the hysteresis of the one-way valve is more serious, which leads to lower VE of the pump.…”

Section: Literature Reviewmentioning

confidence: 99%

Research on Cavitation of the Rotating-Sleeve Distributing Flow System Considering Different Cam Groove Profiles

Hong

Zhao

et al. 2021

Energies

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Reciprocating piston pumps are widely used in various fields, such as automobiles, ships, aviation, and engineering machinery. Conventional reciprocating piston pump distributing flow (RPPDF) systems have the disadvantages of a loose structure and low volumetric efficiency, as well as affected positively by the operating frequency. In this paper, a novel rotating-sleeve distributing flow (RSDF) system is presented for bridging these drawbacks, as well as structurally improved to overcome the inoperable and challenging problems in oil intake and discharge found in the experiment. Moreover, the Singhal cavitation model specifically for the RSDF system and four-cam groove profiles (CGPs) is established. To find the most suitable CGP to reduce the RSDF’s cavitation, the cavitation of the RSDF system was investigated, combining with simulations by taking into account the gap among the rotating sleeve, the pump chamber, and experiments on four presented CGPs. Simulation results based on vapor volume fraction, cavitation ratio, and volumetric efficiency show that the linear profile’s cavitation is the weakest. Finally, the correctness of the simulation is verified through orthogonal experiments. This research is of great significance to the further development of the RSDF system; more important, it has great potential to promote the reform of the RPPDF method.

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Section: Literature Reviewmentioning

confidence: 99%

Research on Cavitation of the Rotating-Sleeve Distributing Flow System Considering Different Cam Groove Profiles

Hong

Zhao

et al. 2021

Energies

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“…Considering Boussinesq approximation along with aforesaid assumptions, the governing equations for the physical problem can be written as follows [3,4,11,12,14,16,17,32] :…”

Section: Mathematical Analysismentioning

confidence: 99%

“…Akbarian et al [31] performed a numerical simulation of using natural gas in a dual-fueled constant-speed diesel engine and obtained results indicated that under different loads and pilot to gaseous fuel (PGF) ratios, the emissions of nitrous oxides and particle materials in the dual mode were lower than diesel engine. Ma et al [32] developed a mathematical model describing gas-liquid valves' motion and dynamical simulation of combined valves to analyze its working mechanism in reciprocating multiphase pump and provide theoretical foundation for the design of new type of multiphase pump. Das et al [33] developed a model to study mixed convection problem under the influence of uniform transverse magnetic force and observed that nanofluid velocity inside the channel enhanced by the imposed magnetic force.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Solution of Hydromagnetic Mixed Convection in a Nanofluid Filled Vented Grooved Channel

Ali

Alim

Ahmed

2021

Journal of Thermal Engineering

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The mixed convection flow in a differentially heated grooved channel filled with water based nanofluid under the influence of external magnetic field has been analyzed numerically in this study. Nanofluid's thermal conductivity model has been modified to develop a new physical problem and finite element method has been implemented to solve the dimensionless governing equations. Numerical simulations have been performed for different values of pertinent parameters. Fluid flow and temperature distributions have been exhibited in terms of streamlines and isotherms due to the variation of Richardson number, Hartmann number and concentration of nanoparticles in base fluid water. The results show that flow field and temperature distributions within the channel affected significantly with the effects of Richardson number, Hartmann number and concentration of nanoparticles. In addition, it is found that heat transfer rate increases and decreases respectively with the increase in strength of magnetic field which depends strongly on Richardson number. Moreover, heat transfer rate accelerates effectively for increasing volume fraction, Reynolds number and Richardson number. The present simulation has been validated by comparing the present results with other published works on the basis of special cases.

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“…The study provides a theoretical basis for the design of high-efficiency multiphase pump and valve. 16,17 Van et al proposed a novel fluid structure interaction (FSI) model for a piston diaphragm pump by immersed boundary methods. They used a combination of two different types of immersed boundary methods, a feedback forcing approach for interaction with the flexible structure, and a direct forcing approach for the interaction with the rigid structure.…”

Section: Introductionmentioning

confidence: 99%

Investigation on dynamic characteristics of a plate-type discharge valve in a diaphragm pump for SCR system by two-way FSI model

Shi

Yang

Pan

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part D:

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A plate-type port valve with rubber valve plate in a miniature diaphragm pump is presented. To investigate the dynamic characteristics of this type of discharge valve, a two-way fluid structure interaction model is proposed. The interaction between the dynamic behavior of the fluid and rubber is considered in the fluid structure interaction model. Based on the fluid structure interaction model, the internal flow of the pump, the deflection of the diaphragm and discharge valve plate is calculated. To verify the validity of the numerical model, a prototype pump is fabricated and tested. The experimental pressures in the working chamber of the pump show the same overall trends with the numerical results. The deviations between the numerical and experimental flowrates are less than 7.2%. The experimental results prove that the numerical model is effective in predicting a complete discharge process of the pump. There is a big difference between the deflection of the center of the valve plate and the edge of the valve plate. The oscillation period of the pressure in the working chamber of the pump is approximately double that of the discharge valve plate. When the pump speed is lower than 2500 r/min, it has little influence on the lag angles of the discharge valve under rated pressure. The lag angles at rated pump speed increase when the backpressures increase. The stress of the discharge valve plate reaches a peak when the valve plate impact on the valve limiter or valve seat.

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Numerical modeling of dynamic characterics for combined valves in multiphase pump

Cited by 14 publications

References 21 publications

Research on Cavitation of the Rotating-Sleeve Distributing Flow System Considering Different Cam Groove Profiles

Research on Cavitation of the Rotating-Sleeve Distributing Flow System Considering Different Cam Groove Profiles

Finite Element Solution of Hydromagnetic Mixed Convection in a Nanofluid Filled Vented Grooved Channel

Investigation on dynamic characteristics of a plate-type discharge valve in a diaphragm pump for SCR system by two-way FSI model

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