Numerical Model of Ohmic Heating for Random Aggregates

Krupa, Artur; Sawicki, Bartosz

doi:10.1109/cpee47179.2019.8949146

Cited by 1 publication

(1 citation statement)

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“…Computational fluid dynamics (CFD) is a tool that has increased its applications in food preservation because it allows the prediction of various behaviors in systems subject to different physical factors [32]. Simulations combined with experimental data validated the mathematical models proposed for practical problems in foods with multiphase characteristics [33], [34]. Furthermore, user-defined function equations allow experimental data to be used for the most relevant thermophysical properties [35], [36].…”

Section: Introductionmentioning

confidence: 95%

Improvement of Ohmic Pasteurization in Mango Pulp Through CFD and RSM

et al. 2022

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Ohmic heating, also known as electrical resistance heating, is a novel process of pasteurization that has several advantages, including homogeneous heating, low heating time, high inactivation of microorganisms, and organoleptic and nutritional properties. Furthermore, mathematical tools allow for quick and low-cost analysis of behaviors with various operating parameters. This study aimed to improve the ohmic pasteurization process of mango pulp using computational fluid dynamics (CFD) and response surface methodology (RSM) using the experimental properties of mango pulp. The generated mathematical model is an accurate tool for predicting ohmic pasteurization behavior in an industrial environment; it presents a 4.4% standard deviation error in the experimental data. Furthermore, the arrangement and intensity of the added voltage analysis suggested operating variables with better pasteurization performance. Another observation was that the production speed was related to the voltage intensities of the inlet speed in a non-proportional manner. In addition, operation at a low inlet velocity may be more susceptible to thermal damage, whereas a high inlet velocity requires a particular proportion of voltage insertion to ensure adequate heat distribution.

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