LDA and PIV characterization of the flow in a hydrocyclone without an air-core

Marins, Luiz Philipe Martinez; Duarte, Diego Gonçalves; Loureiro, Juliana; Moraes, Carlos Alberto Capela; Freire, Atila P. Silva

doi:10.1016/j.petrol.2009.11.006

Cited by 55 publications

(16 citation statements)

References 15 publications

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“…Figure 9 compares the axial velocities with di erent GLRs. From the wall to the center, the direction of axial velocity is opposite; that is, the outside is downward and the inside is upward, and this phenomenon of the axial velocity is consistent with Marins's experimental study by LDV [31], as can be seen from Figures 9 and 10 that the axial velocity of the column section and the cone section are reduced with the increase of GLR. In the column section (Figure 9(a)), the maximum axial velocity appears in the area near the air core and the maximum value is 3.35 m/s.…”

Section: Mathematical Problems In Engineeringsupporting

confidence: 87%

Study of GLR and Inlet Velocity on Hydrocyclone for Fracturing Flow‐Back Fluids

Liu

Zhao

et al. 2019

Mathematical Problems in Engineering

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In this work, based on the Reynolds stress model (RSM) of the computational fluid dynamics (CFD) software Fluent and experimental method, the velocity field, pressure characteristics, split ratio, and separation efficiency of the hydrocyclone are analyzed under different gas-liquid ratios (GLRs). For the inlet velocity, the lower limit is ascertained by the flow field stability, the upper limit is largely determined by the energy consumption, and the optimum range is 4 m/s to 10 m/s. Within the optimum range, the peak value of tangential velocity increases while the GLR increases, whereas the pressure and pressure drop decrease. With the increase in the GLR, the axial velocity decreases, and the locus of zero vertical velocity shifts inward. e increase in the GLR causes more gas to collect at the vortex finder, which hinders the discharge of the solid-liquid mixture from the overflow, and the larger the GLR, the faster the decrease in the split ratio. e separation efficiency of particles with a particle size of 15 μm is increased by 6.75%, and the separation efficiency of particles with a particle size of 30 μm is increased by 0.57%. Meanwhile, the separation efficiency is increased by 2.43%, and the cut size (d 50 ) is reduced as the GLR increases.

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Section: Mathematical Problems In Engineeringsupporting

confidence: 87%

Study of GLR and Inlet Velocity on Hydrocyclone for Fracturing Flow‐Back Fluids

Liu

Zhao

et al. 2019

Mathematical Problems in Engineering

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“…Lim et al [15] adopted 2D PIV to study the velocity vector distribution in the hydrocyclone. Martins et al [16] compared the typical behaviors of the tangential and axial mean velocity components got by LDA (Laser Doppler Velocimetry) with those by 2D PIV. The results showed a good agreement between two methods.…”

Section: Piv System and Signal Processingmentioning

confidence: 99%

Flow field of continuous phase in a vane-type pipe oil–water separator

Shi

2015

Experimental Thermal and Fluid Science

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a b s t r a c tIn this work, the measurements of the swirling field of continuous phase in a new vane-type pipe separator have been carried out to validate the separation characteristics by the Particle Image Velocimetry. The radial, tangential and axial velocities were obtained. The results show that the new separator can successfully form a symmetrical swirling field. The transition region of the tangential velocity between the free vortex and the forced vortex shows a wider range than that in the traditional hydrocyclone. The axial velocity is always positive from the pipe wall to the central area and appears three-peak distribution. The tangential and axial velocities are dependent to the inlet flow rate, and yet show a low sensitivity to the ratio of flow split when the ratio of flow split is less than 13.1%. These results are helpful to the optimal design of the downhole oil/water separator.

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“…Each device is designed to separate particles of a given size range efficiently and economically (Marins et al, 2010;Marthinussen et al, 2014).…”

Section: Introductionmentioning

confidence: 99%