کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7061175 | 1459007 | 2016 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The interpretation of a long-standing rheological flow problem using computational rheology and a PTT constitutive model
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
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چکیده انگلیسی
Modern computational rheology techniques are used to interpret an experimental observation, which has remained unresolved for over four decades. The simple flow in question involved the rotation of a solid sphere in an infinite expanse of non-Newtonian elastic liquid. Under some conditions, Giesekus observed an interesting secondary flow. This added an 'inertial' secondary flow near the rotating sphere to the well-understood 'slow-flow' features observed and predicted by others in the 1960s. By employing a Phan-Thien/Tanner (PTT) constitutive model and moving away from the restriction of 'slow-flow', we show that it is possible to predict numerically the inertial vortex observed by Giesekus.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Newtonian Fluid Mechanics - Volume 233, July 2016, Pages 27-36
Journal: Journal of Non-Newtonian Fluid Mechanics - Volume 233, July 2016, Pages 27-36
نویسندگان
I.E. Garduño, H.R. Tamaddon-Jahromi, K. Walters, M.F. Webster,