Use este identificador para citar ou linkar para este item:
http://hdl.handle.net/11422/8837
Tipo: | Artigo |
Título: | Analytical prediction of friction factors and Nusselt numbers of turbulent forced convection in rod bundles with smooth and rough surfaces |
Autor(es)/Inventor(es): | Su, Jian Freire, Atila Pantaleão Silva |
Resumo: | Indisponível. |
Resumo: | A simple analytical method was developed for the prediction of the friction factor, f, of fully developed turbulent flow and the Nusselt number, Nu, of fully developed turbulent forced convection in rod bundles arranged in square or hexagonal arrays. The friction factor equation for smooth rod bundles was presented in a form similar to the friction factor equation for turbulent flow in a circular pipe. An explicit equation for the Nusselt number of turbulent forced convection in rod bundles with smooth surface was developed. In addition, we extended the analysis to rod bundles with rough surface and provided a method for the prediction of the friction factor and the Nusselt number. The method was based on the law of the wall for velocity and the law of the wall for the temperature, which were integrated over the entire flow area to yield algebraic equations for the prediction of f and Nu. The present method is applicable to infinite rod bundles in square and hexagonal arrays with low pitch to rod diameter ratio, P/D<1.2. |
Palavras-chave: | Turbulent flow Friction factor Law of the wall |
Assunto CNPq: | CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS |
Unidade produtora: | Núcleo Interdisciplinar de Dinâmica dos Fluidos |
Editora: | Elsevier |
In: | Nuclear Engineering and Design |
Volume: | 217 |
Número: | 1-2 |
Data de publicação: | 2-Mai-2002 |
DOI: | 10.1016/S0029-5493(02)00155-3 |
País de publicação: | Brasil |
Idioma da publicação: | eng |
Tipo de acesso: | Acesso Aberto |
ISSN: | 0029-5493 |
Aparece nas coleções: | Engenharias |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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2002_FREIRE_NED217-min.pdf | 215.45 kB | Adobe PDF | Visualizar/Abrir |
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