Modelagem Matemática do Resfriamento de Massa de Grãos Armazenados em Silos com Aeração
DOI:
https://doi.org/10.5540/tema.2007.08.01.0099Abstract
Neste artigo, foi realizado um estudo teórico-experimental sobre o estado térmico de uma massa de grãos de soja armazenada em silos sujeita a aeração. Para simular a dinâmica de resfriamento foi proposto um modelo matemático, que se apresenta como um caso intermediário entre o problema de estado térmico de um corpo constituído por dois materiais diferentes (com fronteira fixa) e o problema de Stefan, onde a fronteira móvel separa os domínios de fases diferentes. Foi obtida a solução analítica deste problema e feita a identificação do modelo proposto pelos dados experimentais. Realizou-se a comparação das simulações deste modelo com os dados experimentais e com outros três modelos matemáticos já conhecidos na literatura.Foi mostrado que o modelo proposto neste trabalho, descreve razoavelmente o processo de resfriamento.References
F.W. Bakker-Arkema, L.E. Lerew, S.F. Deboer, M.G. Roth, Grain dryer simulation, Agricultural Experiment Station Report, Michigan State University, East Lansing, MI, 224 (1974).
F. Courtois, A. Lebert, J.C. Lasseran, J.J. Bimbenet, Simulation of industrial dryers: solving numerical and computer problems, Drying Technology , 9, No. 4 (1991), 927-945.
A. Hunter, Temperature and moisture front movement in an aerated seed bulk, Journal of Agricultural Engineering Research, 40, No. 2 (1988), 113-127.
O.A. Khatchatourian, D.L. Savicki, Mathematical modelling of airflow in an aerated soya bean store under non-uniform conditions, Biosystems Engineering, 88, No. 2 (2004), 201-211.
O.A. Khatchatourian, F.A. Oliveira, Mathematical modelling of air flow and thermal state in large aerated grain storage, em “Proceedings of the IADC - 3rd Inter-American Drying Conference”, (V.Orsat, G.S.V.Raghavan, eds.) CD-ROM,IADC, pp.A-12, 2005.
O.A. Khatchatourian, F.A. Oliveira, Mathematical modelling of air flow and thermal state in large aerated grain storage, Biosystems Engineering, 95, No.2 (2006), 159-169.
O.A. Khatchatourian, F.A. Oliveira, N.A. Toniazzo, Air flow and thermal state in large aerated grain storage, em “Proceedings of the COBEM - 18th International Congress of Mechanical Engineering”, (L.G. Trabasso, M. Ziviani, M.P. Barbosa, S.F.M. Almeida, eds.), CD-ROM, ABCM, 2005.
A.V. Luikov, “Theory of Heat and Mass Transfer in Capillary-porous Bodies”, Pergamon, New York, 1966.
S. Navarro, R.T. Noyes (eds.), “The Mechanics and Physics of Modern Grain Aeration Management”, CRC Press, LLC, USA, 2002.
D.B. Sanderson, W.E. Muir, R.N. Sinha, Intergranular air temperatures of ventilated bulks of wheat, Journal of Agricultural Engineering Research, 40, No. 1 (1988), 33-43.
L.E. Sisson, “Fenômenos de Transporte”, Guanabara, Rio de Janeiro, RJ, 1988.
G.G. White, Temperature changes in bulk stored wheat in sub-tropical Australia, Journal of Stored Products Research, 24, No. 1, (1988), 5-11.
Downloads
Published
How to Cite
Issue
Section
License
Copyright
Authors of articles published in the journal Trends in Computational and Applied Mathematics retain the copyright of their work. The journal uses Creative Commons Attribution (CC-BY) in published articles. The authors grant the TCAM journal the right to first publish the article.
Intellectual Property and Terms of Use
The content of the articles is the exclusive responsibility of the authors. The journal uses Creative Commons Attribution (CC-BY) in published articles. This license allows published articles to be reused without permission for any purpose as long as the original work is correctly cited.
The journal encourages Authors to self-archive their accepted manuscripts, publishing them on personal blogs, institutional repositories, and social media, as long as the full citation is included in the journal's website version.
