A numerical investigation of the aerodynamics of a furnace with a movable block burner

Autor(es)

T. J. Fudihara ^[1] ; L. Goldstein Jr. ^[2] ; M. Mori ^[3]

Afiliação do(s) autor(es)

^[1] State University of Campinas. School of Mechanical Engineering. Thermal and Fluids Engineering Department - Brasil

^[2] State University of Campinas. School of Mechanical Engineering. Thermal and Fluids Engineering Department - Brasil

^[3] State University of Campinas. School of Chemical Engineering. Chemical Processes Department - Brasil

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Journal of Chemical Engineering; v. 24, n. 2, p. 233-248, 2007-06-00.

Resumo

In this work the air flow in a furnace was computationally investigated. The furnace, for which experimental test data are available, is composed of a movable block burner connected to a cylindrical combustion chamber by a conical quarl. The apertures between the movable and the fixed blocks of the burner determine the ratio of the tangential to the radial air streams supplied to the furnace. Three different positions of the movable blocks were studied at this time. A three-dimensional investigation was performed by means of the finite volume method. The numerical grid was developed by the multiblock technique. The turbulence phenomenon was addressed by the RNG k-epsilon model. Profiles of the axial, tangential and radial velocities in the combustion chamber were outlined. The map of the predicted axial velocity in the combustion chamber was compared with a map of the experimental axial velocity. The internal space of the furnace was found to be partially filled with a reverse flow that extended around the longitudinal axis. A swirl number profile along the furnace length is presented and shows an unexpected increase in the swirl in the combustion chamber. (AU)

• Processo FAPESP: 00/14390-5 - Modelagem e simulação do escoamento em um queimador de número de rotação variável em uma câmara cilíndrica horizontal
• Beneficiário: Takeo Jonas Fudihara
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado