Title
CFD modelling of the 3D spatial and temporal distribution of 1-methylcyclopropene in a fruit storage containerCFD modelling of the 3D spatial and temporal distribution of 1-methylcyclopropene in a fruit storage container
Author
Faculty/Department
Faculty of Sciences. Mathematics and Computer Science
Research group
Computational Mathematics
Publication type
article
Publication
New York, N.Y.,
Subject
Pharmacology. Therapy
Source (journal)
Food and bioprocess technology. - New York, N.Y., 2008, currens
Volume/pages
6(2013):9, p. 2235-2250
ISSN
1935-5130
ISI
000323323600001
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Abstract
In this paper, a direct model based on explicit geometry of stacked products in boxes was developed and used to study the diffusion, convection and adsorption of 1-methylcyclopropene (1-MCP) gas in cool stores for apple fruit. The discrete element method was employed to generate random stacking of spherical products in a box. A three-dimensional finite volume-based computational fluid dynamics model was developed, verified and used to study the distribution and partitioning of the 1-MCP gas inside loaded container. The study addressed the gas distribution in a 500 L container with or without air circulation. For each case, 80 kg Jonagold apples at 1 A degrees C and a 1-MCP dose of 1 mu L L-1 was used to collect validation data. In the presence of air circulation, diffusion-convection in air and diffusion adsorption in the product was applied. Simulations were performed with an unstructured tetrahedral mesh using the software ANSYS-CFX, a Reynolds-averaged Navier-Stokes solver. The case without air circulation was modelled as a diffusion problem in air and diffusion coupled with adsorption inside the product. Convection-diffusion-adsorption model parameters that were previously developed and validated were applied. The estimated equilibrium distribution of the 1-MCP gas equals 11, 34 and 55 % as unbounded in fruit, bonded in fruit and remaining in container, respectively. Profiles of free (unbounded) and adsorbed (bounded) 1-MCP concentrations inside fruit were estimated for reduced dosages: 0.5, 0.3, 0.1 and 0.02 mu L L-1.
E-info
https://repository.uantwerpen.be/docman/iruaauth/4174ab/83d6718.pdf
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