Computational Fluid Dynamics (CFD) Modelling and Application for Sterilization of Foods: A Review

Park, Hyeon Woo; Yoon, Won Byong

doi:10.3390/pr6060062

Cited by 37 publications

(15 citation statements)

References 77 publications

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“…As the density and viscosity of the wine vary with temperature, a slight thermal gradient between the wall and the wine is sufficient to set the wine in motion by a natural convection process. In the case of a heated wall, most of the heat flow is used to accelerate the liquid in the adjacent viscous layer [ 22 ]. Heating by conduction, at first dominant, is progressively supplanted by a convective heat transfer.…”

Section: Numerical Procedure: Application Of Cfd To a Full-scale Wmentioning

confidence: 99%

Combined Experimental and CFD Approach of Two-Phase Flow Driven by Low Thermal Gradients in Wine Tanks: Application to Light Lees Resuspension

Bogard

Beaumont

Simescu-Lazar

et al. 2020

Foods

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In winemaking, clarification and stabilization are the processes by which insoluble matter suspended in the wine (called lees) is removed before bottling. The light lees represent 2–4% of the total wine volume. Under certain circumstances, resuspension of lees may occur. The resuspension of lees has been attributed to temperature variations between the wine stored in tanks and the environment of the cellar. From in situ, laboratory-scale studies involving laser tomography techniques, it was shown that low (positive or negative) thermal gradients between a wine tank containing light lees and its external environment induce mass transfer by natural convection. To extrapolate these findings to full-scale tanks, an Eulerian-Eulerian multiphase CFD model was applied to simulate the two-phase flow behavior as a function of temperature variations on a 24–h cycle. Numerical temperature and time-dependent flow patterns of both wine and lees confirm that low thermal gradients induce sufficient fluid energy to resuspend the lees, thus showing that the laboratory results can be extrapolated to full-scale tanks.

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Section: Numerical Procedure: Application Of Cfd To a Full-scale Wmentioning

confidence: 99%

Combined Experimental and CFD Approach of Two-Phase Flow Driven by Low Thermal Gradients in Wine Tanks: Application to Light Lees Resuspension

Bogard

Beaumont

Simescu-Lazar

et al. 2020

Foods

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“…The basic structure of the OBC/LDC-integrated power inverter used in this study is shown in Figure 1, and the specifications are shown in Table 1. The governing equations for flow analysis that are used to verify the flow characteristics of the cooling system include the following steady-state equations [16,17]: The governing equations for flow analysis that are used to verify the flow characteristics of the cooling system include the following steady-state equations [16,17]:…”

Section: Appl Sci 2019 9 X For Peer Review 3 Of 16mentioning

confidence: 99%

“…Moosavian and Jaefarzadeh performed hydraulic analysis of the water supply networks using a modified hardy cross method [13], while Singh, Kheer, and Pandita analyzed water distribution networks based on topological similarity [14]. Moreover, the finite element method (FEM) and finite difference method (FDM) are often used to analyze complex structures such as the channel networks in EV cooling systems [15][16][17]. Though there are many different optimization methods, the one wherein experimental and computational fluid dynamics (CFD) analyses are combined, is used widely; in addition, various algorithms are being studied [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Optimization Based on Product and Desirability Functions for Flow Distribution in Multi-Channel Cooling Systems of Power Inverters in Electric Vehicles

et al. 2019

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The onboard charger (OBC)/low-voltage DC-DC converter (LDC) integrated power inverter for electric vehicles comprises multiple electrical elements that can heat up, which can cause performance degradation and system instability issues in electric vehicles. To address this, a cooling system is included in the OBC/LDC integrated power inverter, which primarily uses water as a coolant. In this water cooling method, controlling the flow rate of water is critical for uniform cooling of the component. Thus, we propose an optimization method that helps determine the design variables to ensure uniform flow rate in each channel of the water-cooled system. The control variables for fluid-flux flow distribution optimization are selected by performing flow analysis for the initial design shape and analyzing their effects on fluid-flux flow distribution. For optimization analysis, the central composite design technique was applied; in addition, multi-response surface optimization using the same flow rate for each channel was performed. The optimization results were compared and verified using desirability functions based on the flow ratio of the cooling water channel, product function, and error function. Among single-response objective functions, the product function showed excellent performance. However, optimization using a multi-response objective function showed significantly higher prediction accuracy than the single-response function: using the optimized design obtained with the multi-response objective function improved the fluid-flux flow distribution uniformity by approximately 90% or more than the initial design.

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“…Computational fluid dynamics (CFD) has been successfully used to analyze numerous unit operations in thermal processing [13][14][15][16][17][18]. Several studies have been conducted to predict the moisture and temperature distribution within an object during heat treatment.…”

Section: Introductionmentioning

confidence: 99%

Effect of Dehydration on the Rheological Measurement of Surimi Paste in Cone-Plate Rheometry: Heat and Mass Transfer Simulation

Park

Yoon

2020

Processes

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Moisture transfer characteristics of Alaska pollock (AP) surimi were investigated at various temperatures. The effective moisture diffusivity increased from 5.50 × 10−11 to 2.07 × 10−9 m2/s as the temperature increased from 30 °C to 90 °C. In order to investigate the mass and heat transfer characteristics of AP surimi, the simulation model was developed and evaluated by root-mean-square error (RMSE) (<2.95%). Rheological properties of AP surimi were investigated at different heating rates (1 °C/min, 5 °C/min, 10 °C/min, 20 °C/min and 30 °C/min). As heating rate increased to 20 °C/min and 30 °C/min, elastic modulus (G’) significantly diminished. The diminished G’ could be explained by impaired gel during temperature sweep supported by the predicted temperature distribution in the simulation model. Changes in moisture content of AP surimi during temperature sweep were also measured and predicted by the simulation model. The results showed the decreased amount of moisture content significantly increased as heating rate increased.

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Computational Fluid Dynamics (CFD) Modelling and Application for Sterilization of Foods: A Review

Cited by 37 publications

References 77 publications

Combined Experimental and CFD Approach of Two-Phase Flow Driven by Low Thermal Gradients in Wine Tanks: Application to Light Lees Resuspension

Combined Experimental and CFD Approach of Two-Phase Flow Driven by Low Thermal Gradients in Wine Tanks: Application to Light Lees Resuspension

Optimization Based on Product and Desirability Functions for Flow Distribution in Multi-Channel Cooling Systems of Power Inverters in Electric Vehicles

Effect of Dehydration on the Rheological Measurement of Surimi Paste in Cone-Plate Rheometry: Heat and Mass Transfer Simulation

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