Visualization of flow structures in a rotary type energy recovery device by PIV experiments

Liu, Kai; Deng, Jianqiang; Ye, Fanghua

doi:10.1016/j.desal.2018.01.022

Cited by 15 publications

(6 citation statements)

References 19 publications

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“…Meanwhile, the vortex diminishment could be found at the duct exit (right). According to the findings of our earlier research, the relative rotation of the endcover and the duct lead to vortex generation (Liu et al, 2018). Meanwhile, all cases had similar vortex structures in the duct.…”

Section: Figurementioning

confidence: 58%

“…The reference parameters of the duct length, the inflow rate and the rotational speed were L 0 = 265 mm, Q 0 = 3.6 m 3 h −1 and n 0 = 120 r•min −1 , respectively. Those parameters were identical to our experimental apparatus (Liu et al, 2018).…”

Section: Methodsmentioning

confidence: 99%

“…However, few studies have been done on the mixing transfer process in ducts of RERDs. In our previous study, we performed visualization experiments (Liu et al, 2018) and simulations to research the flow distributions in ducts. The experimental results presented that a high turbulence intensity caused by the vortex formation and generation would be observed in ducts.…”

Section: Introductionmentioning

confidence: 99%

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Influence of structural and operating factors on mixing transfer of rotary energy recovery device through CFD simulation

Liu

Zhang

et al. 2023

Front. Energy Res.

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The rotary energy recovery device (RERD) is an essential component in seawater desalination for decreasing the energy consumption of reverse osmosis plants. To research the complex flow fields and mixing motion in ducts of a rotary energy recovery device, a 3D numerical simulation was studied in this work. Three-dimensional vortex structures were visualized and identified based on the Q criterion. The effects of the operating condition and the structure parameter on the flow fields and the mixing motion had been discussed. Simulation results indicated that the interaction between vortices in the mixing zone and vortices in the duct entrance led to a high level of turbulence intensity and mixing degree. The mixing process could be controlled by the operating condition and the structure parameter. This paper provides a new approach to researching structural and operating factors on the mixing process of the rotary energy recovery device.

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Section: Figurementioning

confidence: 58%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of structural and operating factors on mixing transfer of rotary energy recovery device through CFD simulation

Liu

Zhang

et al. 2023

Front. Energy Res.

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“…Liu et al [ 157 ] employed two-dimensional particle image velocimetry to rotary type energy recovery device (REDR). By using two-dimensional particle image velocimetry, flow structures are revealed.…”

Section: Introductionmentioning

confidence: 99%

Past and current components-based detailing of particle image velocimetry: A comprehensive review

Rohács¹,

Yasar²,

Kale³

et al. 2023

Heliyon

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“…They found that at an extended angle of ±30°, the minimum mixing rate was achieved. Liu et al 18 proposed a visualization method based on two-dimensional PIV measurements to effectively observe flow structures and the mixing zone. Li et al 19 chose a kind of inclined channel structure to control the unstable flow, and the mixing rate was reduced by more than 50% in this way.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Mixing Rate and Channel Volume Efficiency of a Self-Driven Rotary Energy Recovery Device in the Reverse Osmosis System

et al. 2023

Ind. Eng. Chem. Res.

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The mixing problem of the rotary energy recovery device (RERD) adversely affects the reverse osmosis desalination process. The influence of working conditions on the inflow length and mixing rate in a self-driven hydraulic RERD was studied by analyzing the mass transfer mechanism in the rotor channels via computational fluid dynamics (CFD) simulation. The feasibility and reliability of the simulation were experimentally verified. Channel volume efficiency was defined to analyze the inflow status of channels and the mixing behavior. The simulation data exhibited a linear relationship between the inflow length and the ratio of the flow rate and rotary speed, and the mixing rate represented the quadratic function of the channel volume efficiency. The results indicated that the proposed mathematical model of the inflow length and mixing rate is valid. This model in conjunction with the variation relationship between the rotary speed and the flow rate of the self-driven RERD can help considerably improve the mixing problem of the RERD in the design stage, thus reducing the testing cost.

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Visualization of flow structures in a rotary type energy recovery device by PIV experiments

Cited by 15 publications

References 19 publications

Influence of structural and operating factors on mixing transfer of rotary energy recovery device through CFD simulation

Influence of structural and operating factors on mixing transfer of rotary energy recovery device through CFD simulation

Past and current components-based detailing of particle image velocimetry: A comprehensive review

Investigation of the Mixing Rate and Channel Volume Efficiency of a Self-Driven Rotary Energy Recovery Device in the Reverse Osmosis System

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