A comparative study of UVP and LDA techniques for pulp suspensions in pipe flow

Wiklund, Johan; Stading, Mats; Pettersson, A. Johan; Rasmuson, Anders

doi:10.1002/aic.10653

Cited by 34 publications

(22 citation statements)

References 41 publications

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“…The results of modeling the displacement of yoghurt by water were compared with experimental measurements of the velocity field and phase distribution [15]. The techniques used for the experimental measurements were ultrasonic velocity profile (UVP) and electrical resistance tomography (ERT) measurements [14,16,17]. The numerical results were also compared with numerical results using the species transport model.…”

Section: Introductionmentioning

confidence: 99%

Predicting the Displacement of Yoghurt by Water in a Pipe Using CFD

et al. 2007

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A numerical scheme based on the volume of fluid (VOF) method for predicting the displacement of one liquid by another has been verified versus electrical resistance tomography (ERT) and ultrasonic velocity profile (UVP) measurements for the displacement of yoghurt by water. The scheme using the VOF method predicts the skewed phase distribution as measured using ERT and the global structure of the velocity profile as measured using UVP. The phase distribution using the VOF method was compared with the results using the species transport model which allows for mixing between the phases. The species transport model was found to be less suitable for predicting the displacement of yoghurt by water since the turbulence model was unable to accurately predict the turbulent viscosity in the mixing zone between yoghurt and water, which resulted in a too high rate of mixing.

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Section: Introductionmentioning

confidence: 99%

Predicting the Displacement of Yoghurt by Water in a Pipe Using CFD

et al. 2007

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“…The method for in-line rheometry employing the UVP technique combined with pressure difference (PD) measurements in a pipe section is based on this concept and is currently known as UVP-PD. The methodology used in this work has been developed and improved at SIK and is presented in detail in Wiklund et al (2002Wiklund et al ( , 2006Wiklund et al ( , 2007, Wiklund (2007), Wiklund and Stading (2008).…”

Section: Uvp-pd Methods and Instrumentationmentioning

confidence: 99%

Monitoring liquid displacement of model and industrial fluids in pipes by in-line ultrasonic rheometry

Wiklund

Stading

Trägårdh

2010

Journal of Food Engineering

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“…Along this section, where MRI and UVP results are presented and discussed, the horizontal velocity profiles obtained using MRI, are indicated in the plots by MRI H , while the data obtained by each independent UVP probe are indicated as UVP 4 and UVP 9 , which refers to their respective hardware channel. Velocity data is used from each probe up to the channel centreline.…”

Section: Mri Vs Uvpmentioning

confidence: 99%

“…Ultrasound systems, based on echography and Doppler Effect, allowed the development of equipment capable of measuring almost instantaneous velocity profiles [8]. Initially, the Ultrasonic Velocity Profile (UVP) technique was limited to opaque fluids [9] and it was typically used to measure across pipe walls in small scale systems [10]. A UVP probe emits an ultrasound beam that travels along the axis and afterwards receives the echo from the same beam as reflected by small particles present in the fluid.…”

Section: Introductionmentioning

confidence: 99%

A comparative study of magnetic resonance imaging, electrical impedance tomography and ultrasonic doppler velocimetry for semi-dilute fibre flow suspension characterisation

Faia¹,

Krochak²,

Costa³

et al. 2016

Int. J. CMEM

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Experimental comparisons between imaging techniques serve to provide confidence in the validity of each technique for the study of multiphase flow systems. Such cross-validation can establish the limitations of each technique quantitatively. In the present paper, the authors report efforts made on the characterization of semi-dilute, mono-dispersed suspensions of rayon fibres in turbulent water flow using Magnetic Resonance Imaging (MRI), Ultrasound Velocity Profiling (UVP) and Electrical Impedance Tomography (EIT). Increasing flow velocities and fibre concentration were studied using these three experimental techniques. For lower fibre concentrations more uniform distributions were observed and as flow velocity increased fibre agglomerations were found in the centre region of the pipe.

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A comparative study of UVP and LDA techniques for pulp suspensions in pipe flow

Cited by 34 publications

References 41 publications

Predicting the Displacement of Yoghurt by Water in a Pipe Using CFD

Predicting the Displacement of Yoghurt by Water in a Pipe Using CFD

Monitoring liquid displacement of model and industrial fluids in pipes by in-line ultrasonic rheometry

A comparative study of magnetic resonance imaging, electrical impedance tomography and ultrasonic doppler velocimetry for semi-dilute fibre flow suspension characterisation

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