Spray drying experiments and CFD simulation of guava juice formulation

Benavides-Morán, Aldo; Cubillos, Alfonso Devia; Gómez, Alexánder

doi:10.1080/07373937.2019.1708382

Cited by 17 publications

(14 citation statements)

References 34 publications

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“…For the coarse grid, the resulting number of elements is comparable to the one reported by many RANS-based studies of spray dryers (e.g., [44][45][46]). For the fine grid, the resulting number would be similar to the one reported by a recent SAS-based study [47], which is still lower than the one used in a LES study (see Jongsma et al [16]).…”

Section: Gridsupporting

confidence: 69%

Low-Cost Eddy-Resolving Simulation in the Near-Field of an Annular Swirling Jet for Spray Drying Applications

2021

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Spray drying is one of many industrial applications that use annular swirling jets. For this particular application, the flow characteristics in the near-field of the jet are fundamental to obtaining high-quality dried products. In this article, an annular swirling jet configuration is numerically studied using three low-cost eddy-resolving turbulence methods: detached-eddy simulation (DES), delayed-DES (DDES) and scale-adaptive simulation (SAS). To focus in industrial applicability, very coarse grids are used. The individual performance of these models is assessed through a comparison with laser-Doppler anemometry (LDA) measurements and large-eddy simulation (LES) data from available studies. Results show that all the three turbulence models are suitable for performing industrial cost-effective simulations, capable of reproducing LES results of mean velocities and first-order turbulence statistics at a fraction of the computational cost. Differences in the results of the evaluated models were minor; however, the simulation with DDES still provided a better reproduction of experimental results, especially in the very-near field of the jet, as it enforced RANS behavior near the inlet walls and a better transition from modeled to resolved scales.

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Section: Gridsupporting

confidence: 69%

Low-Cost Eddy-Resolving Simulation in the Near-Field of an Annular Swirling Jet for Spray Drying Applications

2021

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“…This agrees with previous studies that have reported that the air inlet temperature and retention time are the main factors in spray drying that affects the vitamin C content of the spray-dried fruit juice powders; most notably, Estevinho, et al [ 53 ] showed that a reduction in inlet air temperature correlates with increased vitamin C retention [ 54 ]. Computational fluid dynamic (CFD) simulation studies of the spray drying of liquid foods have also shown that RTs are affected by SD configurations [ 55 ]. As a particle with higher RT would be exposed to the hot air longer, it only follows that the thermal degradation reactions would continue to reduce their vitamin C contents, and one would expect the effect to be more intense at higher drying temperatures.…”

Section: Resultsmentioning

confidence: 99%

Comparative Analysis of Concurrent (CC), Mixed Flow (MX), and Combined Spray Drying Configurations on the Physicochemical Characteristics of Satsuma Mandarin (Citrus unshiu) Juice Powders

Cruz-Padilla,

Reyes,

Cavender

et al. 2023

Foods

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Satsuma mandarins are good sources of vitamin C and can be used as raw materials to produce novel plant-based food ingredients including satsuma mandarin juice powders (SJP). Food powders produced via spray drying often show thermal degradation due to the drying conditions and high drying air temperatures. The aim of this study was to evaluate the effect of using different spray drying configurations, including concurrent (CC), mixed flow (MX), and combined (CC + MX), at two inlet air temperatures (160 and 180 °C) on the physicochemical properties of SJP. Remarkably, SJP produced using the CC spray drying configuration exhibited a higher vitamin C content (3.56–4.01 mg/g) and lower moisture levels (15.18–16.35 g/100 g) than powders produced via MX or CC + MX. The vitamin C content of MX and CC + MX powders ranged from 2.88 to 3.33 mg/g. Meanwhile, all SJP had water activity values below 0.19. Furthermore, MX powders displayed the largest mean particle sizes (D50) (8.69–8.83 µm), higher agglomeration, and a rapid dissolution. Despite these differences, all SJP variants exhibited consistent color, surface area, and pore volumes. Notably, powders dried at higher inlet air temperatures (180 °C) showed less vitamin C content and increased thermal damage when compared with powders dried at 160 °C inlet air temperature. This study demonstrated the feasibility of producing high-quality SJP with an extended shelf life. SJP can be used as a novel plant-based ingredient in different food applications.

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“…The Lagrange method used by the authors made it possible to calculate the trajectories of the particles, starting from the circumference of the spraying nozzle and ending with the walls of the dryer and the lower outlet. The CFD model used allowed for the simulation of the particle size distribution, analysis of temperature and humidity during the process, and consequently the evaluation of the drying efficiency [26].…”

Section: Dehydrationmentioning

confidence: 99%

Application of computational fluid dynamics simulations in food industry

Szpicer

Bińkowska

Wojtasik‐Kalinowska

et al. 2023

Eur Food Res Technol

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Computational fluid dynamics (CFD) is a tool for modelling and simulating processes in many industries. It is usually used as a choice to solve problem involving flow of fluids, heat transfer, mass transfer and chemical reaction. Moreover, it has also found application in the optimization of processes in branches of the food industry, including bread baking, cooling beef roast, or spray drying. CFD has enormous potential and many opportunities to improve the quality and safety of food products, as well as to reduce the costs of production and the use of machines and production equipment. In addition, empirical models only permit data to be extracted at a limited number of locations in the system (where sensors and gauges are placed). CFD allows the designer to examine any location in the region of interest, and interpret its performance through a set of thermal and flow parameters. Computer simulations are the future of every field of science, and the presented overview provides the latest information on experts and experiences related to CFD application in food production. Despite some disadvantages, such as the need to have a large reserve of computing power, the development of digital and IT technologies will make this problem insignificant in the nearest future. Then the CFD will become an indispensable element in the design of equipment and technological lines in the food industry.

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Spray drying experiments and CFD simulation of guava juice formulation

Cited by 17 publications

References 34 publications

Low-Cost Eddy-Resolving Simulation in the Near-Field of an Annular Swirling Jet for Spray Drying Applications

Low-Cost Eddy-Resolving Simulation in the Near-Field of an Annular Swirling Jet for Spray Drying Applications

Comparative Analysis of Concurrent (CC), Mixed Flow (MX), and Combined Spray Drying Configurations on the Physicochemical Characteristics of Satsuma Mandarin (Citrus unshiu) Juice Powders

Application of computational fluid dynamics simulations in food industry

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