Fevereiro 2015 vol. 1 num. 2 - XX Congresso Brasileiro de Engenharia Química

Artigo - Open Access.

Idioma principal

STUDY OF A HYDROFLUIDIZATION SYSTEM USING COMPUTATIONAL FLUID DYNAMICS AND A DISCRETE ELEMENT METHOD I: FLOW FIELD AND VELOCITY PROFILES

ORONÁ, J. D. ; ZORRILLA, S. E. ; PERALTA, J. M. ;

Artigo:

ABSTRACT. Hydrofluidization (HF) is a method of chilling and freezing of foods that pumps a refrigerating liquid upwards through orifices into a vessel creating submerged jets and thus results in extremely high surface transfer phenomena. The objective was to model the flow field and the velocity profiles of spheres in a HF system using computational fluid dynamics and a discrete element method. The HF system consisted in a cylindrical vessel of 100‒mm diameter and 100‒mm height and a perforated plate with orifices of 3‒mm diameter. The samples were 13 potato spheres of 10‒mm diameter. The operative variables were temperature (‒5°C, ‒10°C), distance among the orifices (10 mm, 20 mm) and average velocity of the fluid at the orifices (0.59 m/s, 1.18 m/s). The results are promising to obtain relevant information about the momentum transfer and the dynamics of samples being processed within a HF system.

Artigo:

Palavras-chave:

DOI: 10.5151/chemeng-cobeq2014-1880-17063-179534

Referências bibliográficas
  • [1] BELIS, E. E.; ZORRILLA, S. E.; PERALTA, J. M. Fenómenos de transporte en un sistema de hidrofluidización afectado por el número de orificios y las variables operativas. In: IV Congreso Internacional de Ciencia y Tecnología de los Alimentos (CICYTAC 2012), Nov. 14-16, Córdoba, Argentina, 2012.
  • [2] 0.000.050.100.150.200.253 3.2 3.4 3.6 3.8 4v p[m s‐1]Time  [s]T5V059S2T10V059S2T5V118S2T10V118S2T5V059S1T10V059S1T5V118S1T10V118S10.000.050.100.150.200.253 3.2 3.4 3.6 3.8 4v slip[m s‐1]Time [s]T5V059S2 T10V059S2T5V118S2 T10V118S2T5V059S1 T10V059S1T5V118S1 T10V118S1(a) (b)Área temática: Engenharia e Tecnologia de Alimentos 7BELIS, E. E.; ZORRILLA, S. E.; PERALTA, J. M. Efecto del número de esferas estáticas de alimento y de orificios en la transferencia de energía en un sistema de hidrofluidización. In: XIV Congreso Argentino de Ciencia y Tecnología de los Alimentos (CYTAL), Oct. 23-25, Rosario, Argentina, 2013.
  • [3] BELIS, E. E.; ZORRILLA, S. E.; PERALTA, J. M. Heat and mass transfer in a hydrofluidization system with multiple spheres. In: IFT14 Annual meeting and food expo, Jun. 21-24, New Orleans, USA, 2014.
  • [4] CUNDALL, P. A.; STRACK, D. L. A discrete numerical model for granular assemblies. Géotechnique, v. 29, p. 47‒65, 1979.
  • [5] FIKIIN, A. G. New method and fluidized water system for intensive chilling and freezing of fish. Food Control, v. 3, p. 153–160. 1992.
  • [6] FLUENT. Theory guide. ANSYS-FLUENT 14.1. Canonsburg: ANSYS Inc., 2011.
  • [7] ORONÁ, J. D.; ZORRILLA, S. E.; PERALTA, J. M. Study of a hydrofluidization system using computational fluid dynamics and a discrete element method II: heat transfer and turbulence. In: XX Congresso Brasileiro de Engenharia Química (COBEQ), Oct. 19-22, Florianópolis, Brazil, 2014.
  • [8] PERALTA, J. M.; RUBIOLO, A. C.; ZORRILLA, S. E. Design and construction of a hydrofluidization system. Study of the heat transfer on a stationary sphere. J. Food Eng., v. 90, p. 358–364, 2009.
  • [9] PERALTA, J. M.; RUBIOLO, A. C.; ZORRILLA, S. E. Mathematical modeling of the heat transfer and flow field of liquid refrigerants in a hydrofluidization system with a stationary sphere. J. Food Eng., v. 99, p. 303–313, 2010.
  • [10] PERALTA, J. M.; RUBIOLO, A. C.; ZORRILLA, S. E. Mathematical modeling of the heat and mass transfer in a stationary potato sphere impinged by a single round liquid jet in a hydrofluidization system. J. Food Eng., v. 109, p. 501–512, 2012.
  • [11] VERBOVEN, P.; SCHEERLINCK, N.; NICOLAÏ, B. M. Surface heat transfer coefficients to stationary spherical particles in an experimental unit for hydrofluidisation freezing of individual foods. Int. J. Refrig., v. 26, 328–336, 2003.
  • [12] Acknowledgments This research was supported partially by Universidad Nacional del Litoral (Santa Fe, Argentina), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), and Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT).
Como citar:

ORONÁ, J. D.; ZORRILLA, S. E.; PERALTA, J. M.; "STUDY OF A HYDROFLUIDIZATION SYSTEM USING COMPUTATIONAL FLUID DYNAMICS AND A DISCRETE ELEMENT METHOD I: FLOW FIELD AND VELOCITY PROFILES", p. 5053-5060 . In: Anais do XX Congresso Brasileiro de Engenharia Química - COBEQ 2014 [= Blucher Chemical Engineering Proceedings, v.1, n.2]. São Paulo: Blucher, 2015.
ISSN 2359-1757, DOI 10.5151/chemeng-cobeq2014-1880-17063-179534

últimos 30 dias | último ano | desde a publicação


downloads


visualizações


indexações