کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
767239 897162 2011 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Two-dimensional flow of chemically reactive viscoelastic fluids with or without the influence of thermal convection
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Two-dimensional flow of chemically reactive viscoelastic fluids with or without the influence of thermal convection
چکیده انگلیسی

Shear and temperature induced dynamics of a viscoelastic liquid is investigated with direct numerical simulations. A numerical algorithm based on the finite difference method is implemented in time and space with the Oldroyd-B constitutive model for the viscoelastic liquids. The temperature effects are modeled by a combination of Arrhenius kinetics and thermal convection. The standard approach which applies periodic boundary conditions is replaced by one in which the unprescribed boundary values are regenerated from the main flow. The algorithm is validated against well-known Newtonian natural convection flow results. The results show that progressive viscoelasticity leads to lower temperature increases within the fluid system, and that the highest temperature increases are recorded for corresponding Newtonian fluids.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Communications in Nonlinear Science and Numerical Simulation - Volume 16, Issue 3, March 2011, Pages 1387–1395
نویسندگان
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