CFD simulation and experimental validation of bubble cap tray hydrodynamics

Shenastaghi, Fatemeh Keshavarz; Roshdi, Sepideh; Kasiri, Norollah; Khanof, M. H.

doi:10.1016/j.seppur.2017.09.055

Cited by 19 publications

(11 citation statements)

References 28 publications

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“…The meshing shape of the downcomer in entrance of the Nye tray and a part of tray deck (8,16). Solari and Bell reported nearly identical velocities at the upstream and downstream of the flow (on a line with the same Z coordinates); thus, the obtained velocities in this study were compared with the linear mean of upstream and downstream velocities reported by Solari and Bell.…”

Section: Validationmentioning

confidence: 64%

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Nye tray vs sieve tray: A comparison based on computational fluid dynamics and tray efficiency

et al. 2021

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Nye and sieve trays were hydrodynamically simulated and compared. The simulations were performed in a Eulerian-Eulerian framework under unsteady (transient) conditions at industrial scale. Conducted on an air-water system, the simulations included three dimensions and two phases. The velocity distribution across the tray, the height of clear liquid, the froth height, and the pressure drop were investigated and compared with experimental data. Péclet number was calculated using hydrodynamic and geometric parameters. The tray efficiencies were also predicted to further compare the two trays. The results showed that the liquid flow was steadier on the Nye tray rather than the sieve tray, possibly because of the special structure of the liquid and gas inlets for the Nye tray.

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Section: Validationmentioning

confidence: 64%

“…Shenastaghi et al [8] predicted the behaviour of gas and liquid on bubble cup tray by means of CFD. Building a 3D two-phase model in the Eulerian-Eulerian framework, they ignored the mass and energy transfer equations and calculated different parameters, including velocity distribution, pressure, clear liquid height, and froth height.…”

Section: Introductionmentioning

confidence: 99%

Nye tray vs sieve tray: A comparison based on computational fluid dynamics and tray efficiency

et al. 2021

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“…4). The use of air at atmospheric pressure to represent the single-phase flow of the gas phase is a common procedure in many studies in this field [9,16,27,34,38,[43][44][45][46][47][48][49][50].…”

Section: Cfd Modelmentioning

confidence: 99%

Experimental and Computational Fluid Dynamics Validation of Correlations for Dry Pressure Drop in Trays without Downcomer

et al. 2020

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The dry tray pressure drop (ΔPd) is a design parameter that provides preliminary information about the total pressure drop. This work aimed to assess correlations for ΔPd prediction for different types of trays without downcomer and to evaluate the effects of the free area ratio (φ) and the hole diameter (d) on ΔPd. Assessment was performed by comparing results of several correlations with those from an experimentally validated computational fluid dynamics simulation. The study shows that the correlations of Červenka and Kolář, Bennett, Agrawal and Cook, and Stichlmair and Mersmann predicted the dry pressure drop satisfactorily. The correlation of Bennett, Agrawal and Cook can be recommended for the prediction of ΔPd for a wide range of geometries and operation conditions. Also, φ has a higher influence on ΔPd than d.

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“…In addition, stability factors were calculated using the dry pressure drop and the clear liquid height for the two trays and compared based on the weep rates. Many researchers have already studied the hydraulics of trays by CFD or experiments [24][25][26][27][28]. However, there are many issues about industrial trays and towers that have not yet been fully investigated.…”

Section: Introduction and Previous Workmentioning

confidence: 99%

Nye Tray Versus Sieve Tray: Experimental Study on Hydrodynamic Parameters

Abbasnia

Nasri

2021

Chem Eng & Technol

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The hydrodynamic parameters of a Nye tray were investigated by performing experiments in a tower with a diameter of 1.22 m. Air was used as the gas phase and water was used as the liquid phase. A number of parameters such as the dry pressure drop, the total pressure drop, the clear liquid height, the froth height, and the entrainment were measured. A tray stability factor was obtained using the amount of weeping, the clear liquid height, the dry pressure drop, and the Froude number. All experiments were repeated for the matching sieve tray under the same conditions. Ultimately, advantages and disadvantages were compared, and the results demonstrated that the Nye tray has a couple of advantages over the sieve tray, except that the sieve tray is slightly more stable.

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CFD simulation and experimental validation of bubble cap tray hydrodynamics

Cited by 19 publications

References 28 publications

Nye tray vs sieve tray: A comparison based on computational fluid dynamics and tray efficiency

Nye tray vs sieve tray: A comparison based on computational fluid dynamics and tray efficiency

Experimental and Computational Fluid Dynamics Validation of Correlations for Dry Pressure Drop in Trays without Downcomer

Nye Tray Versus Sieve Tray: Experimental Study on Hydrodynamic Parameters

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