A numerical parametric and optimization study of an industrial air-slide conveyor system

Xiang, Junting; Heng, JinLiang; New, T. H.

doi:10.1016/j.powtec.2017.04.010

Cited by 4 publications

(5 citation statements)

References 23 publications

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“…Pressure drop amplification results in an increment of output cement mass flow rate, where 45% enhancement of output mass flow rate can be achieved within the pressure drop investigated here. This trend confirms the conclusions reached in an earlier study for the actual ASC system by Xiang et al (2017), which was validated by actual industrial operational data, that the presence of a suction fan enhances the conveying capability of air-slide system significantly. Hence, it suggests that further enhancements in cement conveying can be achieved by adjusting the pressure drop at the conveyor exit.…”

Section: Steady-state Simulationssupporting

confidence: 91%

“…Both steady-state and transient simulations were conducted to aid the analysis of the prototype ASC, the procedures of which will now be presented in greater detail. It should be noted that, in contrast to an earlier study by Xiang et al (2017) where the focus was on the industrial ASC system, the present study focuses on how capable numerical simulations are in modelling flow details of the prototype ASC system and how they match up with earlier simulations on the industrial ASC. A three-dimensional computational domain was generated using Gambit-2.4 based on the physical dimensions of the prototype ASC.…”

Section: Numerical Approaches and Proceduresmentioning

confidence: 99%

“…The simulation operating conditions were specified based on the material properties and experiment facility capabilities, with similar simulation procedures applied based on the earlier work by Xiang et al (2017). Table 2 gives the simulation input parameters.…”

Section: Numerical Approaches and Proceduresmentioning

confidence: 99%

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Numerical Investigations on a Small-Scale Air-Slide Conveyor

Xiang¹,

New²

2019

JAFM

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This study reports upon numerical investigations on a small-scale air-slide conveyor (ASC) model that is based on a full-scale industrial ASC currently in operation. For validation of the ASC model and prediction of details of cement flow distribution on time-basis, both steady-state and transient simulations are performed. Simulation results demonstrate the development of cement flow phenomenon and predict critical flow features in the system, which will be useful for predicting corresponding behavior in the full-scale industrial ASC. Mass balance is achieved and potential optimization technique is supported by simulation data. Both steady-state converged solution and results on time-basis are discussed. This study demonstrates the validity of ASC model design and paves the way for using similar numerical tools for future particle-laden flow studies. Lastly, it also offers design and optimization insights into such industrial ASC systems.

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Section: Steady-state Simulationssupporting

confidence: 91%

Section: Numerical Approaches and Proceduresmentioning

confidence: 99%

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Numerical Investigations on a Small-Scale Air-Slide Conveyor

Xiang¹,

New²

2019

JAFM

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“…As a result, the range of the debris flight is strongly dependent on the aerodynamic drag forces [1][2][3]. However, as the number of debris particles is at least tens of thousands, the computational cost to conduct a full Computational Fluid Dynamic (CFD) simulation for each debris particle is prohibitively high, though CFD has been demonstrated to be a feasible approach for many applications [4][5][6][7], including particle tracking [8,9] or particle-laden flows [10,11]. The possible approach to handle particle-particle and particle-fluid interactions together is the DEM-CFD method (DEM: discrete element method), when a limited number of particles are included [9].…”

Section: Introductionmentioning

confidence: 99%

A model for the aerodynamic coefficients of rock-like debris

Chai

Parkhi

Boopathy

et al. 2018

Comptes Rendus. Mécanique

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“…with the exception of [60]. However, a mesh dependency study was conducted and the particle diameter used in the numerical model was one of the smallest.…”

Section: Numerical Modelmentioning

confidence: 99%

Characteristics of two-phase gas-particle flows in circular pipes and bends

Heng¹

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Pneumatic conveying systems are employed across different industries with its routing flexibility being one of the reasons it is favoured over other systems. In pneumatic conveying, material fed into the system at the inlet goes through a series of closed piping in a very clean operation. However, the use of pipe bends for routing can cause a phenomenon called particle roping which may decrease the overall efficiency of the system. Due to inertial forces acting on the conveyed Greek alphabets Volume fraction Θ Collisional dissipation of energy Θ Granular temperature Bulk viscosity / Second viscosity Dynamic viscosity Eddy viscosity Density Turbulent Prandtl number ̿ Stress tensor Subscripts Gas phase Arbitrary phase Solid phase [4] on the pickup velocity of particles and de Moraes et al. [5] on head loss coefficient for pipe fittings, both of which deal with properties fundamental to pneumatic conveying processes. While experimental studies form a significant portion of pneumatic conveying investigations, the number of numerical studies are increasing as well. There are a few numerical approaches to study pneumatic conveying flows that build on top of established methods in calculating single-Constitutive relations are usually derived for certain flow conditions and may not be adequate beyond the range that it was originally derived for [10]. Therefore, this thesis first aims to demonstrate the ability of an Eulerian scheme in predicting the flow characteristics of a granular phase in a pneumatic pipe configuration Particle ropes, a region of the pipe cross-sectional area where there is an increased concentration of particles, are caused by pipe bends [14]. When particles enter a pipe bend, inertial effects will tend to cluster the particles into a region of higher particle concentration. This area is usually located on the outer wall of the pipe bend. Particle ropes are sometimes seen as an unwanted occurrence in operations,

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A numerical parametric and optimization study of an industrial air-slide conveyor system

Cited by 4 publications

References 23 publications

Numerical Investigations on a Small-Scale Air-Slide Conveyor

Numerical Investigations on a Small-Scale Air-Slide Conveyor

A model for the aerodynamic coefficients of rock-like debris

Characteristics of two-phase gas-particle flows in circular pipes and bends

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