کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9692394 | 1458616 | 2005 | 23 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dynamics of two-phase downwards flows in submerged entry nozzles and its influence on the two-phase flow in the mold
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Dynamics of two-phase downwards flows in submerged entry nozzles and its influence on the two-phase flow in the mold Dynamics of two-phase downwards flows in submerged entry nozzles and its influence on the two-phase flow in the mold](/preview/png/9692394.png)
چکیده انگلیسی
Gas-liquid flows inside the submerged entry nozzle (SEN) of a slab mold and its influence in the flow field in the mold were studied using video recording, mathematical simulations and particle image velocimetry (PIV) approaches. Bubbly and annular flows in the SEN yield structurally-uncoupled and structurally coupled flows in mold, respectively. High gas loads (ratio of mass flux of gas and mass flux of liquid) at high casting rates lead to increases of bubble population and bubbles sizes due to coalescence processes whose rate exceeds that of their breakup. The presence of gas bubbles or gas layers inside the SEN lead to periodical twisting of the liquid flow that induces biased flows through both ports yielding uneven flows in the mold. A multiphase mathematical model predicts acceptably well the flow dynamics of two-phase flows inside the SEN.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Multiphase Flow - Volume 31, Issue 5, May 2005, Pages 643-665
Journal: International Journal of Multiphase Flow - Volume 31, Issue 5, May 2005, Pages 643-665
نویسندگان
A. Ramos-Banderas, R.D. Morales, R. Sánchez-Pérez, L. GarcÃa-Demedices, G. Solorio-Diaz,