کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7049816 | 1457162 | 2013 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental study of the impacts of forced vibration on thermodiffusion phenomenon in microgravity environment
ترجمه فارسی عنوان
بررسی تجربی اثر لرزش اجباری بر پدیده ترمودیفسیون در محیط میکرو گرانشی
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
آزمایش فضایی، انتقال حرارت و جرم، اثر مرتع، ارتعاش نیرو، ماشاف زهندر تداخل سنجی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
The SODI-IVIDIL (Selectable Optical Diagnostics Instrument-Influence of Vibrations on Diffusion of Liquids) project was performed on board the International Space Station to study the possible influences of a wide range of forced vibration on thermodiffusion measurements in a condition of microgravity subjected to three temperature differences. In this study, the effects on a thermodiffusion experiment of increasing the Gershuni number (Gs) from zero to Gs â¼3 Ã 103 with a constant temperature gradient of 15 K were studied for the first time. While many investigations have been done studying thermodiffusion phenomena in a microgravity condition, and preliminary discussions on IVIDIL objectives have been proposed, only a few works can be found in the literature that address the result of this project. ISS experimental results were obtained that were based on optical digital interferometry in a reduced gravity environment. Nine runs of water and isopropanol with a negative Soret coefficient and a temperature difference of 15 K were analyzed as test cases in this study. However, results indicate a maximum separation and Soret coefficient for the case with a minimum Gershuni number, and different concentration profiles and separation patterns were observed. Remarkably, when Gs = 1.5 Ã 103, the maximum separation may not occur at the end of diffusion time.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Thermal Engineering - Volume 60, Issues 1â2, 2 October 2013, Pages 348-358
Journal: Applied Thermal Engineering - Volume 60, Issues 1â2, 2 October 2013, Pages 348-358
نویسندگان
Amirhossein Ahadi, M. Ziad Saghir,