Mixed thermal convection: fundamental issues and analysis of the planar case

Anais da Academia Brasileira de Ciências

Jacques Padet¹  Renato M. Cotta¹  Emilia C. Mladin¹  Colette Padet¹ 

关键词: mixed convection;    Boussinesq approximation;    similarity;    buoyancy forces;    entropy production;    reverse flow;    convecção mista;    aproximação de Boussinesq;    similaridade;    forças de empuxo;    produção de entropia;    escoamento reverso;   

DOI  :  10.1590/0001-3765201520140254

来源: SciELO

【 摘 要 】

This paper aims to renew interest on mixed thermal convection research and to emphasize three issues that arise from the present analysis: (i) a clear definition of the reference temperature in the Boussinesq approximation; (ii) a practical delimitation of the three convective modes, which are the forced convection (FC), mixed convection (MC) and natural (or free) convection (NC); (iii) and, finally, a uniform description of the set FC/MC/NC in the similarity framework. The planar case, for which analytical solutions are available, allows a detailed illustration of the answers here advanced to the above issues.

【 授权许可】

CC BY   
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