کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10280891 | 465842 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Time series analysis of the sporadic motion of a single particle at the threshold of hydraulic conveying
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Time series analysis of the sporadic motion of a single particle at the threshold of hydraulic conveying Time series analysis of the sporadic motion of a single particle at the threshold of hydraulic conveying](/preview/png/10280891.png)
چکیده انگلیسی
Experiments have been performed to investigate the sporadic motion of cubic and rectangular prism particles at the threshold of hydraulic conveying in a pipe inclined at various angles. The particle spends periods of time at rest at the invert of the pipe before moving variable distances downstream; the process then repeats. It is shown that successive time periods of rest auto-correlate, meaning that the particles exhibit some memory effect with regard to rest times, although there is a distinct random factor that is presumably due to turbulence. Further, it is statistically shown that the memory is real. The curve of memory factor vs. flow rate transposes up the abscissa as pipe inclination and particle density increases and exhibits a maximum in between total particle stasis and saltation. The physical basis for this memory effect is open to debate, but may be due to the fact that particles can adopt multiple orientations whilst at rest, some of which are more stable then others. The memory factor is shape dependent.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Powder Technology - Volume 160, Issue 1, 30 November 2005, Pages 54-59
Journal: Powder Technology - Volume 160, Issue 1, 30 November 2005, Pages 54-59
نویسندگان
D. Laskovski, J. Zhou, P. Stevenson, K.P. Galvin,