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Your search keyword '"Verboven, Pieter"' showing total 39 results
Start Over Author "Verboven, Pieter" Journal journal of food engineering
39 results on '"Verboven, Pieter"'

26. Multiscale modeling in food engineering

Author

Ho, Quang T., Carmeliet, Jan, Datta, Ashim K., Defraeye, Thijs, Delele, Mulugeta A., Herremans, Els, Opara, Linus, Ramon, Herman, Tijskens, Engelbert, van der Sman, Ruud, Van Liedekerke, Paul, Verboven, Pieter, and Nicolaï, Bart M.

Published
2013
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38. A new method developed to characterize the 3D microstructure of frozen apple using X-ray micro-CT.

Author

Ndoye, Fatou-Toutie, Alvarez, Graciela, Vicent, Victor, Verboven, Pieter, and Nicolaï, Bart

Subjects
*APPLES, *FREEZING, *MICROSTRUCTURE, *MICROSCOPY, *ALGORITHMS
Abstract

Non-destructive imaging techniques have become indispensable to improve insights into the microstructural changes occurring in fruit tissue during freezing. Here, apple cortex tissue samples were frozen using different freezing rates: (i) slow freezing (2.0 °C per min.), (ii) intermediate freezing (12.6 °C per min.) and fast freezing (18.5 °C per min.). Temperature-controlled X-ray micro-CT was optimized and then applied to visualize and quantify the 3D microstructure and ice crystal distribution at a pixel resolution of 3.8 μm. Ice crystal size distributions with mean equivalent diameters of about 41 ± 3.5 μm, 55 ± 7.4 μm and 71 ± 9.6 μm were obtained for the fast, intermediate and slow freezing rates, respectively. A new imaging methodology was developed and validated to allow segmentation of the ice crystals in frozen apple tissue using the X-ray attenuation coefficients of the reference model samples, i.e. frozen pure water and concentrated apple juice. [ABSTRACT FROM AUTHOR]

Published
2017
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39. Airflow measurement techniques for the improvement of forced-air cooling, refrigeration and drying operations.

Author

O'Sullivan, Justin, Maria Ferrua, Love, Richard, Verboven, Pieter, Nicolaï, Bart, and East, Andrew

Subjects
*FOOD dehydration, *COOLING of food, *COMPUTATIONAL fluid dynamics, *MATHEMATICAL models, *AIR flow, *PARAMETERS (Statistics), *OPTIMAL designs (Statistics), *REFRIGERATION & refrigerating machinery
Abstract

Flowrate and distribution of air is a critical design factor in the cooling, refrigeration and drying of horticultural food products. These operations rely on a constant supply of air distributed throughout bulk arrangements of the produce. Local distribution of the air is critical to optimising the design and efficiency of these processes. Identification of the key parameters affecting the airflow distribution has been done either experimentally (using intrusive point-wise or bulk measurement techniques) or numerically. The detailed information provided by the use of computational fluid dynamic models has facilitated unique opportunities to investigate alternative system designs, without the need for expensive and time consuming experiments. This study provides a review of the techniques available to measure airflow (thermal and rotatory vane anemometry, pressure differential devices, tracer gases, LDA and PIV). Their advantages and disadvantages (accuracy, resolution, application range, cost, and ease of use) as well as their application in the validation of numerical models are reviewed. The novel and scientifically based design guidelines developed by a better understanding of the airflow behaviour within the system for each of the operations under study are also presented. [ABSTRACT FROM AUTHOR]

Published
2014
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