Numerical methodology and CFD simulations of a rotary vane energy recovery device for seawater reverse osmosis desalination systems

Ye, Fanghua; Bianchi, Giuseppe; Rane, Sham; Tassou, Savvas A.; Deng, Jianqiang

doi:10.1016/j.applthermaleng.2021.116788

Cited by 16 publications

(2 citation statements)

References 44 publications

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“…Xu et al [29] researched the working conditions influencing the mixing rate of the servomotor-driven RERD via CFD simulation, while Ye et al [30] investigated that of a hydraulic self-driven RERD and the effect of angles in end covers. Ye et al [31] and Sun et al [32] designed a rotary vane RERD and a new swash plate-plunger RERD, respectively. These studies focused on energy recovery efficiency, rotary speed and mixing of RERD.…”

Section: Innovative Structural Designmentioning

confidence: 99%

Research on the Influence of Lateral Force and Pressure Fluctuation on the Stability of a Rotary Energy Recovery Device in the Desalination System

Ye,

Hu,

Wang

et al. 2024

Water

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The rotary energy recovery device (RERD) plays an important role in reverse osmosis (RO) desalination; however, few investigations on the formation and influence of lateral force on the RERD rotor have been published. The transient characteristics of lateral force and its relationship with pressure distribution and fluctuation in the clearance were analyzed via computational fluid dynamics (CFD) simulation. The clearance pressure distribution and lateral force were quantified under different working conditions. The eccentricity of the rotor, resistance torque and decrease in the rotary speed due to the lateral force were simulated and they were found to change with flow rate and pressure of high-pressure outlet (PHO). A new rotary speed prediction method including the effect of PHO was developed. With the increasing flow rate or PHO, the stability of RERD declined. A design optimization direction was proposed. The variation trends of rotary speed, pressure in the clearance and its fluctuation were verified through experiment. This research provides an explanation why in practice the rotary speed decreases with increasing pressure. The conclusions obtained herein can be of great significance for future research on improving the stability and lifespan and reducing the maintenance consumption of RERD.

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Section: Innovative Structural Designmentioning

confidence: 99%

Research on the Influence of Lateral Force and Pressure Fluctuation on the Stability of a Rotary Energy Recovery Device in the Desalination System

Ye,

Hu,

Wang

et al. 2024

Water

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“…The current state of the issue of modeling cavitation phenomena is also given in review articles [52,53] in which the authors point out gaps in the description of cavitation processes.…”

Section: Introductionmentioning

confidence: 99%

Numerical Modeling of the Behavior of Bubble Clusters in Cavitation Processes

Pavlenko

2024

Energies

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To study the behavior of a bubble clusters in cavitation devices, a numerical study of the dynamics of bubbles in a compressible liquid was performed, taking into account interfacial heat and mass transfer. The influence of regime and system parameters on the intensity of cavitation processes is considered. Physical and chemical transformations during the cavitation treatment of liquids are caused not only by the action of shock waves and emitted pressure pulses but also by extreme thermal effects. At the stage of extreme compression of the bubble, the vapor inside the bubble and the liquid in its vicinity transform into the state of a supercritical fluid. The presented model analyzes the nature of microflows in the interbubble space and carries out a quantitative calculation of the local values of the parameters of the velocity and pressure fields.

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Theoretical, CFD modelling and experimental investigation of a four-intersecting-vane rotary expander

Murthy,

Krishan,

Shenoy

et al. 2024

Applied Energy

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Numerical methodology and CFD simulations of a rotary vane energy recovery device for seawater reverse osmosis desalination systems

Cited by 16 publications

References 44 publications

Research on the Influence of Lateral Force and Pressure Fluctuation on the Stability of a Rotary Energy Recovery Device in the Desalination System

Research on the Influence of Lateral Force and Pressure Fluctuation on the Stability of a Rotary Energy Recovery Device in the Desalination System

Numerical Modeling of the Behavior of Bubble Clusters in Cavitation Processes

Theoretical, CFD modelling and experimental investigation of a four-intersecting-vane rotary expander

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