کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7061089 | 1458986 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Free-surface flow of a viscoplastic fluid during the filling of a planar channel
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The non-Newtonian fluid flow with a free surface occurring during a plane channel filling in the gravity field has been simulated numerically. The mathematical statement of the problem is formulated on the basis of the motion equations, continuity equation, and natural boundary conditions on the free surface with an application of the Herschel-Bulkley rheological model. A traditional mathematical model singularity on the three-phase contact line is eliminated using a slip condition. A numerical algorithm based on the finite-difference method is developed for solving the problem. Regularization of the rheological equation has been carried out using a shock-capturing method for the flow with unyielded regions. A parametric investigation of the flow kinematics and free surface behavior in terms of the governing parameters has been implemented. The flow structures distinguished by the presence of unyielded regions have been demonstrated depending on relation of the viscous, gravity, and plastic forces in the flow.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Newtonian Fluid Mechanics - Volume 254, April 2018, Pages 12-22
Journal: Journal of Non-Newtonian Fluid Mechanics - Volume 254, April 2018, Pages 12-22
نویسندگان
E.I. Borzenko, K.E. Ryltseva, G.R. Shrager,