Numerical and experimental study of solidification around the cylinder with and without the use of turbulence promoter / Estudo numerico e experimental da solidificação em torno de cilindro com e sem o uso de promotor de turbulencia

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

The process of solidification of a material of change of phase in a region annular around of a cylinder cooled by fluid passing in its interior is studied numerical and experimentally, objectifying applications in systems of storage of latent heat. The boundary immobilization technique is used for solving for phase-change problem. The coordinate transformation is performed so that in the new system the moving and irregular boundary become fixes and parallel to the others. The finite-volume methodology is used discretization of the equation from the mathematical model witch are than solved by a computer program. The experiments are made for 4 temperatures and 3 Reynolds numbers of the fluid: 741, 1484, and 2280 respectively. A turbulence promoter was insert inner tube to enhancement the coefficient of heat transference, where 6 experiments were made to -10 and -15ºC temperature with the previous Reynolds numbers. The experimental results had been compared with the numerical results

ASSUNTO(S)

thermal analysis solidification analise termica heat engineering engenharia termica solidificação (analise numerica) calor - armazenamento heat storage

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