کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
655214 1457630 2015 26 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Recent progress in the development of the Elliptic Blending Reynolds-stress model
ترجمه فارسی عنوان
پیشرفت اخیر در توسعه مدل تنش رینولدز مخلوط کردن بیضوی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی


• Various modifications of the Elliptic Blending Reynolds stress model, proposed during the last decade, are revisited.
• Using theoretical arguments and detailed comparison with DNS data, a reference model is formulated.
• The model satisfactorily reproduces the effects of spanwise rotation on turbulence, for cases without and with separation.

The Elliptic Blending Reynolds Stress Model (EB-RSM), originally proposed by Manceau and Hanjalić (2002) to extend standard, weakly inhomogeneous Reynolds stress models to the near-wall region, has been subject to various modifications by several authors during the last decade, mainly for numerical robustness reasons. The present work revisits all these modifications from the theoretical standpoint and investigates in detail their influence on the reproduction of the physical mechanisms at the origin of the influence of the wall on turbulence. The analysis exploits recent DNS databases for high-Reynolds number channel flows, spanwise rotating channel flows with strong rotation rates, up to complete laminarization, and the separated flow after a sudden expansion without and with system rotation. Theoretical arguments and comparison with DNS results lead to the selection of a recommended formulation for the EB-RSM model. This formulation shows satisfactory predictions for the configurations described above, in particular as regards the modification of the mean flow and turbulent anisotropy on the anticyclonic or pressure side.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Fluid Flow - Volume 51, February 2015, Pages 195–220
نویسندگان
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