کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
656060 1457672 2008 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermally induced secondary drop atomisation by single drop impact onto heated surfaces
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Thermally induced secondary drop atomisation by single drop impact onto heated surfaces
چکیده انگلیسی

The paper reports an experimental study of single millimetric water drop impacts onto a hot aluminium alloy (AlMg3) surface. The main aim of this investigation was to evidence the effect of the heat transfer mechanism on the secondary atomisation, but the effect of impact velocity and surface characteristics on the impact outcomes were also studied.Two non-intrusive measurement techniques, namely Phase Doppler Anemometer and image analysis, were used to describe the time evolution of the secondary droplet diameters and to study the effect of surface temperature, surface roughness and impact velocity on the impact outcomes. The morphology of drop impact is described for two different boiling regimes and quantitative results about the arithmetic mean and Sauter mean diameters of the secondary droplets are reported. An attempt to correlate the Sauter mean diameter of secondary drops with the nominal surface temperature is also reported.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Fluid Flow - Volume 29, Issue 1, February 2008, Pages 167–177
نویسندگان
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