کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10393002 887131 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Model-free inversion of squeeze-flow rheometer data
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Model-free inversion of squeeze-flow rheometer data
چکیده انگلیسی
A method for extracting rheological data from squeeze-flow tests is proposed. The analysis, based upon the lubrication approximation for a generalized Newtonian fluid, differentiates experimental data in order to obtain an estimate of the wall shear rate (as in the Weissenberg-Rabinowitsch correction for the capillary rheometer) and of the wall shear stress. Two examples are discussed. The first is based on an approximate expression for the force required to squeeze a Herschel-Bulkley fluid. The second example concerns a power-law fluid with partial slip at the plates (but non-zero wall shear stress). Second derivatives of the experimental data are required: the interpretation of noisy results is therefore likely to be difficult.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Newtonian Fluid Mechanics - Volume 129, Issue 2, 30 August 2005, Pages 61-65
نویسندگان
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