A Reynolds stress model for turbulent flow of homogeneous polymer solutions

• Type: Article in International Scientific Journal
• Date: 2015

Authors

Masoudian, M (Author) Other; Kim, K (Author) Other; F. T. Pinho (Author) FEUP; Sureshkumar, R (Author) Other

Journal

Title: International Journal of Heat and Fluid Flow

Vol. 54

Pages: 220-235

ISSN: 0142-727X

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 7 Citations

Other information

Authenticus ID: P-00G-CT1

DOI: 10.1016/j.ijheatfluidflow.2015.05.017

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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 16