Numerical study of apple cooling in tandem arrangement

The conjugated cooling of apples in tandem arrangements on trays was studied in this work by numerical simulation using a CFD code. The governing equations were discretized and solved using the finite volume method on unstructured triangular meshes; and a coupling scheme for the fluid and solid heat transfer problems was proposed. The computational model was validated using two test cases in which local and average Nusselt numbers are reported in the literature. The local Nusselt number for each apple was obtained during one hour of air cooling as a function of the Reynolds number. Nusselt number and temperature distribution were found to vary in the apples due to the conjugate behavior of the problem. The conjugate approach showed itself to be a powerful tool for optimizing the convective heat transfer correlations reported in the literature.

• Autores: Arêdes Martins, Marcio; Soares de Oliveira, Leandro; Osorio Saraz, Jairo Alexander
• Tipo de recurso: Article of journal
• Fecha de publicación: 2011
• Institución: Universidad Nacional de Colombia
• Repositorio: Universidad Nacional de Colombia
• Idioma: spa
• OAI Identifier: oai:repositorio.unal.edu.co:unal/37749
• Acceso en línea: https://repositorio.unal.edu.co/handle/unal/37749; http://bdigital.unal.edu.co/27833/
• Palabra clave: Cooling of fruits; conjugate problem; unstructured fi nite-volume; triangular mesh; numerical simulation.
• Rights: openAccess
• License: Atribución-NoComercial 4.0 Internacional