کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
644687 | 1457129 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Steady-state and transient microscale temperature measurements by multispectral method and photons counting
ترجمه فارسی عنوان
اندازه گیری درجه حرارت میکروسکوپ ثابت و حالت گذرا با روش چند بعدی و شمارش فوتون
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
This work presents steady-state and transient microscale temperature measurements by optical and multispectral method in the ultraviolet-visible wavelengths. Regarding the classic laws of radiative heat transfers, the photon counting is preferred to the energy measurement. The photonic emission is a random phenomenon and is here measured with statistical laws such as the Gaussian law. The spectral dependence of the optical apparatus transfer function is taken into account by a linear function and the temperature is estimated by inversion with a Levenberg-Marquardt algorithm. Measurements are performed with a small-dimension blackbody developed in the laboratory and with a Chromel wire. Both of them are capable of heating up above 1000â°C. The diameters of the observed surfaces are 10âµm and 5âµm, respectively. The theoretical criterion of wavelength selection and least-squares parameter estimation allow for a difference between the estimated and controlled temperatures lower than 4%.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 99, 25 April 2016, Pages 343-351
Journal: Applied Thermal Engineering - Volume 99, 25 April 2016, Pages 343-351
نویسندگان
Thomas Pierre, Christophe Rodiet, Benjamin Rémy, Alain Degiovanni,