Numerical Simulation of Flow Behavior within a Venturi Scrubber

Toledo-Melchor, M. M.; Torres, Claudia del Carmen Gutiérrez; Bernal, José Alfredo Jiménez; Saldaña, Juan Gabriel Barbosa; Martínez-Delgadillo, Sergio A.; León, H. R. Mollinedo-Ponce de; Yoguéz-Seoane, A.; Alonzo-García, Alejandro

doi:10.1155/2014/106329

Cited by 5 publications

(4 citation statements)

References 11 publications

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“…Pressure drop and velocity data for a spray tower scrubber obtained from a numerical simulation are presented. Numerical results are in good agreement with ACGIH recommended [14]. The CFD simulation results demonstrate the distribution of the velocity & pressure of the spray tower scrubber.…”

Section: International Journal Of Environmental Science and Developmesupporting

confidence: 62%

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Flow Behavior Simulation with Computational Fluid Dynamics in Spray Tower Scrubber

Bayatian¹,

Ashouri²,

Mahmoudkhani³

2016

IJESD

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Abstract-Computational Fluid Dynamics (CFD) uses numerical methods and algorithms to solve and analyze problems that involve fluid flows. This paper describes the application of a commercial CFD code, to Simulation of Flow Behavior within Spray Tower Scrubber, focusing on silica particles. First a ventilation system was designed and constructed for pilot study. It was designed according to velocity pressure method balanced system design stated by VS-15-01 recommendation offered by ACGIH. Fluent package of Ansys, Inc is used to model and simulate this problem. Efficiency of inhalable pollutant particle collection has increased (P-Value < 0.05) with the increase of the flow rate. Also, with increase in the flow rate, collection efficiency of particles was increases (P-Value< 0.05). From the simulation experimentations, the residuals do a very good job of converging at approximately 2460 iterations at inlet velocities of 11.176 m/s. In general, the CFD simulation can improve efficiency, reduce cost, and shorten experimental periods. It can also provide insights for optimal equipment design. With the increase of water flow rate the collection efficiency of inhalable and non-inhalable particles of silica particles increases. This is due to the increase of surface contact of water droplets with pollutant, which has caused the efficiency of the system. Future work should focuses on an improved prediction of droplet size distribution in order to enhance dust-capturing calculation.Index Terms-Silica, CFD, spray tower scrubber.

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Section: International Journal Of Environmental Science and Developmesupporting

confidence: 62%

“…This is due to the increase of surface contact of water droplets with pollutant, which has caused the efficiency of the system. Future work should concentrate on an improved prediction of droplet size distribution in order to enhance dust-capturing calculation [14]. August 8, 1982.…”

Section: International Journal Of Environmental Science and Developmementioning

confidence: 99%

Flow Behavior Simulation with Computational Fluid Dynamics in Spray Tower Scrubber

Bayatian¹,

Ashouri²,

Mahmoudkhani³

2016

IJESD

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“…For instance, a boundary layer growth model was developed by Gamisans et al [17] to investigate the pressure drop characteristics of Venturi scrubbers, while the hydrodynamics of a liquid/liquid phase distribution through a Venturi meter in a vertical pipe was examined by Jana et al [18]. Numerical simulations of flow behaviour within a Venturi meter have been performed to determine air injection rates [19], pressure difference on a bluff body object for water flow [20] and on turbine blades placed within the throat section for air flow [21], as well as to determine the effects of varying the geometry of the converging section on pressure drop [22] and study the behaviour of two-phase flow and mixing [23][24][25][26][27]. More recently, cavitating flows in a small-sized Venturi tube have been studied by Razali et al [28].…”

Section: Introductionmentioning

confidence: 99%

SPH simulations of water flow through a Venturi meter of rectangular cross-section: Comparison with experiments

Sigalotti,

Alvarado-Rodríguez,

Aragón

et al. 2023

Preprint

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We present three-dimensional simulations of water flow through a horizon- tal, small-scale Venturi tube of rectangular cross-section at Reynolds numbers between 13272 and 33180, using the method of Smoothed Particle Hydrody- namics (SPH) for solving the conservation laws. Water is simulated using the Murnaghan-Tait equation of state so that weak compressibility is allowed. The hydrodynamics is coupled to a Large-Eddy Simulation (LES) model for tur- bulence. Comparison with experimental measurements is provided in terms of centerline streamwise velocity and pressure profiles along the extent of the Ven- turi meter and cross-sectional velocity profiles at given stations. The numerical results are in good agreement with the experimental data, with root-mean square errors from 4.3% to 7.1% and from 1.4% to 6.8% for the centerline streamwise velocity (in units of m s−1) and differential pressure (in psi) along the Venturi tube, respectively, and ≲ 5.5% for the cross-sectional velocity profiles (in m s−1) within the throat and divergent sections. These errors increase with increasing volumetric flow rates. In general, it is shown that the SPH model can provide an efficient and accurate method for recalibrating flowmeters at moderately high Reynolds numbers instead of using costly experimental tests.

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“…The third paper contained the effect of gas and liquid flow rate on dust removal efficiency [22,23]. Toledo-Melchor et al [24] performed a three-dimensional simulation of different gas flows on five venturi geometries, with a difference between them in the angles of convergence and divergence. Additionally, they studied the two-phase simulation of a single venturi geometry to analyze the behavior of gas flow and the effect of water flow on pressure drop.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of the Cleaning Performance of a Venturi Scrubber

et al. 2022

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Industrial applications need to use different systems for the problem of gas cleaning. A lot of processes have been developed, such as the use of a venturi for gas cleaning and pollution reduction. Additionally, several studies have been developed especially in terms of pressure drop because it is one of the main parameters to determine its efficiency. While the phenomenon of mass transfer in a venturi scrubber has not found much attention, in the present study, a mass transfer two-dimensional simulation is developed for gasification gas cleaning through a venturi scrubber with boundary conditions represented in air inlet velocities of 10, 15, and 20 m/s and water inlet mass flow of 0.02, 0.04 and 0.06 kg/s. In this work, Navier–Stokes equations are solved numerically and the mass transfer technique is treated by the volume of fluid (VOF) model, using CFD software. The obtained results were analyzed by presenting the mass fraction, velocity and pressure contours, and profiles. The probability density function (PDF) of mass transfer is studied too, showing how the removal efficiency of the venturi scrubber increases with a decrease in the liquid flow rate and an increase in the gas velocity. Therefore, the results show that the proposed venturi has the best mass transfer performance with a PDF that reaches 97.6 for velocity liquid of 20 m/s and the removal efficiency showed higher values at low liquid flow rates.

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Numerical Simulation of Flow Behavior within a Venturi Scrubber

Cited by 5 publications

References 11 publications

Flow Behavior Simulation with Computational Fluid Dynamics in Spray Tower Scrubber

Flow Behavior Simulation with Computational Fluid Dynamics in Spray Tower Scrubber

SPH simulations of water flow through a Venturi meter of rectangular cross-section: Comparison with experiments

Numerical Simulation of the Cleaning Performance of a Venturi Scrubber

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