کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1863375 | 1037653 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A simplified model for flows with eddies in symmetrically expanding channels
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A simplified model for flows with eddies in symmetrically expanding channels A simplified model for flows with eddies in symmetrically expanding channels](/preview/png/1863375.png)
چکیده انگلیسی
We derive a simplified model for two-dimensional (2D) channel flows with recirculated regions at moderate Reynolds numbers based on an extension of the boundary layer (BL) theory and averaging across the channel. The model reproduces symmetry-breaking bifurcations and resulting flow structures accurately. Analytical estimates for the decay rates toward the parabolic profile before and after a sudden change in the walls agree well with the full numerical simulations. A seemingly chaotic steady flow is also discovered in a channel with periodic expansions and contractions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 370, Issue 1, 8 October 2007, Pages 58–63
Journal: Physics Letters A - Volume 370, Issue 1, 8 October 2007, Pages 58–63
نویسندگان
Shinya Watanabe, Vakhtang Putkaradze,