Reduction of a model for single droplet drying and application to CFD of skim milk spray drying

Tran, Thi Thu Hang; Jaskulski, Maciej; Tsotsas, Evangelos

doi:10.1080/07373937.2016.1263204

Cited by 40 publications

(9 citation statements)

References 24 publications

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“…In industrial spray drying for example, such small particles are generated, indicating that the CDRC could result in a good prediction for the droplet drying kinetics in this process. Tran et al apply the CDRC model in their CFD modeling of skim milk spray drying and found satisfactory accuracy for the entire range of modeled drying conditions [ 133 ]. Wawrzyniak et al similarly utilized this approach to model the mass transfer in the droplets in their CFD simulations of a drying tower [ 134 ].…”

Section: Physics Of Particle Formation From a Drying Dropletmentioning

confidence: 99%

Unraveling Particle Formation: From Single Droplet Drying to Spray Drying and Electrospraying

et al. 2020

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Spray drying and electrospraying are well-established drying processes that already have proven their value in the pharmaceutical field. However, there is currently still a lack of knowledge on the fundamentals of the particle formation process, thereby hampering fast and cost-effective particle engineering. To get a better understanding of how functional particles are formed with respect to process and formulation parameters, it is indispensable to offer a comprehensive overview of critical aspects of the droplet drying and particle formation process. This review therefore closely relates single droplet drying to pharmaceutical applications. Although excellent reviews exist of the different aspects, there is, to the best of our knowledge, no single review that describes all steps that one should consider when trying to engineer a certain type of particle morphology. The findings presented in this article have strengthened the predictive value of single droplet drying for pharmaceutical drying applications like spray drying and electrospraying. Continuous follow-up of the particle formation process in single droplet drying experiments hence allows optimization of manufacturing processes and particle engineering approaches and acceleration of process development.

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Section: Physics Of Particle Formation From a Drying Dropletmentioning

confidence: 99%

Unraveling Particle Formation: From Single Droplet Drying to Spray Drying and Electrospraying

et al. 2020

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“…However, the transient evolution of any of those variables, which would be needed to check the degree of fidelity with the theoretical temperature evolution, was omitted because of the steady-state character of their solution. Also, Tran et al [15] linked a reduced single droplet drying (SDD) model to a CFD simulation set-up and obtained profiles of the change in water mass fraction of droplets with the vertical distance from the nozzle by using a steady-state solver. Jubaer et al [16] compared both the perfect shrinkage and the linear shrinkage models in a transient CFD simulation to predict particle size distribution within the vessel, residence time, and particle stickiness using the concept of Discrete Particle Model (DPM) parcels.…”

Section: Latin Symbolsmentioning

confidence: 99%

Numerical and experimental characterization of the hydrodynamics and drying kinetics of a barbotine slurry spray

Sebastia‐Saez

Hernández

Arellano‐García

et al. 2019

Chemical Engineering Science

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Spray drying is a basic unit operation in several process industries such as food, pharmaceutical, ceramic, and others. In this work, a Eulerian-Lagrangian three-phase simulation is presented to study the drying process of barbotine slurry droplets for the production of ceramic tiles. To this end, the simulated velocity field produced by a spray nozzle located at the Institute of Ceramic Technology in Castelló (Spain) is benchmarked against measurements obtained by means of laser Doppler anemometry in order to validate the numerical model. Also, the droplet size distribution generated by the nozzle is obtained at operating conditions by means of laser diffraction and the data obtained are compared qualitatively to those found in the literature. The droplet size distribution is introduced thereafter in the three-phase simulation to analyse the drying kinetics of individual droplets. The model predicts the theoretical linear evolution of the square diameter (D 2-law), and the temperature and mass exchange with the environment. The proposed model is intended to support the design and optimization of industrial spray dryers.

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“…Next developed model was simplified and implemented into the CFD solver. To verify correctness of performed simulations calculation results were compared with experimentally obtained data from the test spray drying installation constructed on Otto von Guericke University in Magdeburg [12]. The test installation will later colled OVGU dryer.…”

Section: Cfd Model Of Skim Milk Spray Dryingmentioning

confidence: 99%

“…Tested spray drying tower is a co-current installation with narrow drying chamber: total height is 6.5 m with 0.4 m inner diameter [12]. Instead of a standard two-fluid spray nozzle the newly designed monodisperse multi-stream droplet atomizer was used [14].…”

Section: Geometry and Nozzle Configurationsmentioning

confidence: 99%

CFD model-supported design of monodisperse co-current spray dryers

Jaskulski

Tran

Tsotsas

2018

Proceedings of 21th International Drying Symposium

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In this study the operation of spray drying chambers fitted by the multi-stream monodisperse atomizer was simulated by the previously developed CFD model of skim milk spray drying. A series of CFD simulations of skim milk monodisperse spray drying were performed. The influence of different nozzle positions, initial droplet diameters (180 μm and 167 μm) and the way of air introduction (vertical or swirling with 30° or 60° angle) on the drying process were checked. Parameters like drying air and particle residence time, wall deposition, inter-particle collisions, protein thermal deactivation, air velocity and temperature profiles were compared for each case. Keywords: CFD, spray drying, skim milk, monodisperse atomizers, optimization.

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Reduction of a model for single droplet drying and application to CFD of skim milk spray drying

Cited by 40 publications

References 24 publications

Unraveling Particle Formation: From Single Droplet Drying to Spray Drying and Electrospraying

Unraveling Particle Formation: From Single Droplet Drying to Spray Drying and Electrospraying

Numerical and experimental characterization of the hydrodynamics and drying kinetics of a barbotine slurry spray

CFD model-supported design of monodisperse co-current spray dryers

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