این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
Journal of Applied Fluid Mechanics، جلد ۱۱، شماره ۴، صفحات ۹۷۱-۹۸۲
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی On the Determination of the Yield Surface within the Flow of Yield Stress Fluids using Computational Fluid Dynamics
چکیده انگلیسی مقاله A part of non-Newtonian fluids are yield stress fluids. They require a minimum stress to flow. Below this minimum value, yield stress fluids remain solid. To date, 1D and 2D numerical models have been used predominantly to study free surface flows. However, some phenomena have three-dimensional behaviour such as the appearance of the limit between the liquid regime and the solid regime. Here the aim is to use a Computational Fluid Dynamics (CFD) to reproduce the properties of the free surface flow of yield stress fluids in an open channel. Modelling the behaviour of the yield stress fluid is also expected. The numerical study is driven with the software OpenFOAM. Numerical outcomes are compared with experimental results from model experiment and theorical predictions based on the rheological constitutive law. The 3D model is validated by evaluating its capacity to reproduce reliably flow patterns. The depth, the local velocity and the stress are quantified for different numerical configurations (grid level, rheological parameters). Then numerical results are used to detect the presence of rigid and sheared zones within the flow.
کلیدواژه‌های انگلیسی مقاله CFD, Yield stress fluids, Free surface flow, Yield surface, Regularized model
نویسندگان مقاله N. Schaer |
3D Eau, Strasbourg, Bas-Rhin, 67000, France

J. Vazquez |
Mechanics Department, ICube Laboratory, University of Strasbourg, Strasbourg, Bas-Rhin, 67000, France

M. Dufresne |
3D Eau, Strasbourg, Bas-Rhin, 67000, France

G. Isenmann |
Mechanics Department, ICube Laboratory, University of Strasbourg, Strasbourg, Bas-Rhin, 67000, France

J. Wertel |
3D Eau, Strasbourg, Bas-Rhin, 67000, France

نشانی اینترنتی https://www.jafmonline.net/article_665_add452871dcabbb1f07a166601d78ee8.pdf
فایل مقاله فایلی برای مقاله ذخیره نشده است
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات