کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9691586 1458193 2005 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental uncertainty of measured entropy production with pulsed laser PIV and planar laser induced fluorescence
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Experimental uncertainty of measured entropy production with pulsed laser PIV and planar laser induced fluorescence
چکیده انگلیسی
The article develops an uncertainty analysis for a newly measured variable of local entropy production. Entropy production is measured with post-processing and spatial differencing of measured velocities from particle image velocimetry (PIV), as well as temperatures obtained from planar laser induced fluorescence (PLIF). Measurement uncertainties of fluid velocity depend on the time interval between laser pulses, width of the camera view and other factors. Bias errors are related to elementary bias components and sensitivity coefficients in the uncertainty analysis. The precision errors use a confidence coefficient of 2 for a 95% confidence interval. The newly developed measurement technique and uncertainty analysis are successfully applied to pressure-driven channel flow and buoyancy-driven free convection in a square enclosure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 48, Issue 8, April 2005, Pages 1450-1461
نویسندگان
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