Double-Species Slurry Flow in a Horizontal Pipeline

Skudarnov, P. V.; Lin, Cheng-Xian; Ebadian, M. A.

doi:10.1115/1.1637925

Cited by 22 publications

(15 citation statements)

References 6 publications

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“…It is more rational to consider the solid phase as two components according to two peaks of particle size distribution and the moment exchange between different solid phases needs to be included. At present, only few studies [16,17] have reported experimental results on double-solid-phases slurry flow. Our numerical results show more important flow characteristics than these reported.…”

Section: Introductionmentioning

confidence: 96%

CFD simulation of coal-water slurry flowing in horizontal pipelines

Chen

Duan

et al. 2009

Korean J. Chem. Eng.

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An Eulerian multiphase approach based on kinetic theory of granular flow was used to simulate flow of coal-water slurries (CWS) in horizontal pipelines. The RNG k-ε turbulent model was incorporated in the governing equation to model turbulent two-phase flow with strong particle-particle interactions. In this model, the coal particles with bimodal distribution were considered as two solid-phase components, and the moment exchange between solid and liquid as well as that between solid and solid were accounted for. The model was firstly validated with pressure gradient and concentration profile data from the open literature, and then validated with pressure gradient data of the authors' experiments. The effects of influx velocity, total influx concentration and grain composition were numerically investigated, and the results have displayed some important slurry flow characteristics, such as constituent particle concentration distribution and velocity distribution as well as pressure gradients, which are very difficult to display in the experiments. The results suggest that both gravity difference between large and small particles and strong particleparticle interaction had significant effects on concentration distribution as well as velocity distribution.

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Section: Introductionmentioning

confidence: 96%

CFD simulation of coal-water slurry flowing in horizontal pipelines

Chen

Duan

et al. 2009

Korean J. Chem. Eng.

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“…The theoretical result is based on, and confirmed by, extensive testing of large diameter commercial pipelines transporting coal-water slurries (Skudarnov et al, 2004). This method provides a means of interpolation between flow pattern extremes of homogeneous flow and heterogeneous flow to estimate the pressure gradient for mixed-size slurries.…”

Section: Pressure Drop In Multi-particle Slurriesmentioning

confidence: 70%

“…Studies to determine the effect of two different particle characteristics on the pressure drop measurements were performed by Skudarnov et al (2004) using silica and zircon sands transported in water. The sands have different densities but the same particle size range.…”

Section: Pressure Drop In Multi-particle Slurriesmentioning

confidence: 99%

Multiphase Flow Measurement Techniques for Slurry Transport

Albion¹,

Briens²,

Briens³

et al. 2011

International Journal of Chemical Reactor Engineering

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Multiphase flow measurement techniques are required to monitor slurry transport in industrial processes. Monitoring methods are used to ensure that the slurry is transported under specific conditions, and as an indicator of potential problems. Intrusive and non-intrusive sensors are used to measure solids concentration, mass flowrates, velocities and flow patterns. Sensing techniques are based on pressure, electrical, sound, imaging and nuclear properties. In this literature review, measurement techniques examined for horizontal pipelines include pressure measurements, the Coriolis mass flowmeter, acoustic sensors, capacitance, conductivity and microwave probes, electrical resistance tomography, laser Doppler imaging and the Pulsed Neutron Activation Technique. The principles of operation are described along with experimental results and a critique of the sensors and technology.

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“…Factors affecting the pressure gradient have been examined by several researchers such as Newitt et al (1955), Maruyama et al (1979), Lin (1982), Doron and Barnea Charles, 1970). (1993,1996), Doron et al (1997), Gillies et al (1999), Skudarnov et al (2004), Greenspan and Nigam (2001), Kaushal and Tomita (2002), Kaushal et al (2005), and Matousek (2002).…”

Section: Hydrotransport Flow Regime Characterization Methodsmentioning

confidence: 97%

“…Suspended particle flow results in an increased pressure gradient with velocity (Newitt et al, 1955). Skudarnov et al (2004) determined that the critical velocity for the formation of moving and stationary beds are directly related to increased solids concentrations, as well as to increasing specific gravity of the transported material. Maruyama et al (1979) studied the hydrotransport of glass beads in horizontal pipes using visual observations and pressure measurements.…”

Section: Hydrotransport Flow Regime Characterization Methodsmentioning

confidence: 99%

Flow regime determination in horizontal hydrotransport using non‐intrusive acoustic probes

Albion

Briens

et al. 2008

Can J Chem Eng

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A variety of flow regimes may be observed in the hydrotransport of solids. Maintaining a consistent operation requires rapid detection of any change in flow regime. The objective of this study was to develop reliable, non-intrusive, and on-line methods for flow regime detection in a hydrotransport pipe based on acoustic measurements.Slurries were transported in a 0.05 m diameter stainless steel hydrotransport pipe. Acoustic measurements were recorded by microphones along the length of the horizontal pipe. Two flow regimes were observed: suspended solids flow and flow over settled solids. Cycle and frequency analyses of the acoustic signals provided reliable identification of these flow regimes.Plusieurs régimes d'écoulement peuventêtre observés dans le transport hydraulique des solides. Le maintien d'un fonctionnement consistant nécessite la détection rapide de tout changement dans le régime d'écoulement. L'objectif de cetteétude est de développer des méthodes fiables, non intrusives et en continu pour la détection des régimes d'écoulement dans une conduite de transport hydraulique reposant sur des mesures acoustiques. Les suspensions ontété transportées dans une conduite de transport hydraulique en acier inoxydable de 0,05 m de diamètre. Les mesures acoustiques ontété enregistrées par des microphones le long de la conduite horizontale. Deux régimes d'écoulement ontété observés : l'écoulement de solides suspendus et l'écoulement au-dessus des solides déposés. Les analyses de cycle et de fréquence des signaux acoustiques fournissent une identification fiable de ces régimes d'écoulement.

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Double-Species Slurry Flow in a Horizontal Pipeline

Cited by 22 publications

References 6 publications

CFD simulation of coal-water slurry flowing in horizontal pipelines

CFD simulation of coal-water slurry flowing in horizontal pipelines

Multiphase Flow Measurement Techniques for Slurry Transport

Flow regime determination in horizontal hydrotransport using non‐intrusive acoustic probes

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