کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7052418 | 1457416 | 2015 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Quantitative visualization of boundary layers by developing quasi-common-path phase-shifting interferometer
ترجمه فارسی عنوان
تجسم کمی از لایه های مرزی با توسعه تداخل سنج فاز انتقال شبه مشترک مسیر
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کلمات کلیدی
تجسم کمی، لایه مرزی، اینترفرمت، تکنیک انتقال فاز،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
The objective of this study is to achieve accurate and quantitative visualization of the boundary layer using a novel optical system that offers a large visualization area, fewer disturbance effects, integration with a wind tunnel and high phase, spatial and temporal resolution. A novel optical configuration was proposed to realize these features. In addition, high phase and spatial resolution could be realized by introducing a phase-shifting image processing technique. Finally, a novel prism was specially designed to implement the phase-shifting technique. In this study, the proposed system was evaluated by using it to quantitatively visualize boundary layers around a circular cylinder and over a flat plate. The effect of a tripwire on the flow was visualized by an interferogram. In the experiments on flow over a flat plate, the temperature distributions in the thermal boundary layer were measured accurately, and the velocity distributions were estimated from the measured temperature distributions. The experimental data were compared with a semi-analytical solution. Good agreement was obtained, and the relative error was within 5.0% in the temperature measurement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Experimental Thermal and Fluid Science - Volume 60, January 2015, Pages 231-240
Journal: Experimental Thermal and Fluid Science - Volume 60, January 2015, Pages 231-240
نویسندگان
Eita Shoji, Ryota Nakaoku, Atsuki Komiya, Junnosuke Okajima, Shigenao Maruyama,