کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
622455 882646 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental Analysis and Computational Modelling of Gas–Liquid Stirred Vessels
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Experimental Analysis and Computational Modelling of Gas–Liquid Stirred Vessels
چکیده انگلیسی

The aim of this work is to investigate the turbulent hydrodynamics of a gas–liquid stirred tank of standard geometry through experiments and simulations. The 2-D velocity fields are obtained by a two-phase PIV technique, consisting of a pulsed Nd:YAG laser, emitting light at 532 nm, and two cameras, each provided with a filter, that allow to discriminate between the light scattered by the fluorescent liquid seeding particles and that scattered by the bubbles. The experimental results obtained at different gas flow rates are presented, compared with single-phase data and discussed for gaining insight into the gas–liquid flows. They are also adopted for the quantitative evaluation of the results produced by CFD simulations based on a Two Fluid Model approach. The agreement between the experimental and the calculated mean velocity fields indicates that the selected CFD modelling is appropriate for the prediction of the mean hydrodynamic features of gas–liquid dispersions in stirred vessels.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Research and Design - Volume 85, Issue 5, 2007, Pages 647–653
نویسندگان
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