Título: International Journal of Heat and Fluid FlowImportada do Authenticus Pesquisar Publicações da Revista

Vol. 54

Páginas: 220-235

ISSN: 0142-727X

Editora: Elsevier

ISI Web of Knowledge - 3 Citações

ISI Web of Science

Scopus - 7 Citações

INSPEC

FOS: Ciências da engenharia e tecnologias > Engenharia mecânica

ID Authenticus: P-00G-CT1

DOI: 10.1016/j.ijheatfluidflow.2015.05.017

Resumo (PT):

Abstract (EN): Using a priori analyses of direct numerical simulation (DNS) data, a Reynolds stress model (RSM) is developed to account for the influence of polymer additives on turbulent flow over a wide range of flow conditions. The Finitely Extensible Nonlinear Elastic-Peterlin (FENE-P) rheological constitutive model is utilized to evaluate the polymer contribution to the stress tensor. Thirteen DNS data sets are used to analyze the budgets of elastic stress–velocity gradient correlations as well as Reynolds stress and dissipation transport. Closures are developed in the framework of the RSM model for all the required unknown and non-linear terms. The polymer stresses, velocity profiles, turbulent flow statistics and the percentage of friction drag reduction predicted by the RSM model are in good agreement with present and those obtained from independent DNS data over a wide range of rheological and flow parameters.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 16