کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1729243 1521160 2011 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Bubble viscosity effect on internal circulation within the bubble rising due to buoyancy using the level set method
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
Bubble viscosity effect on internal circulation within the bubble rising due to buoyancy using the level set method
چکیده انگلیسی

In this article, the effect of bubble viscosity on internal circulation within a bubble has been analyzed numerically. The Finite Volume Method and SIMPLE algorithm have been used for field solution. This algorithm calculates the pressure field in addition to the velocity components that do not appear in related literature. A level-set method has been applied for tracking the interface between the bubble and the fluid around it. The solution algorithm was first validated for a parasitic flow. Then, the bubble shape deformation was simulated for bubbles with different Eotvos and Morton numbers, and the results were compared with experimental findings. Comparison of the results is encouraging. It is concluded that the internal circulation intensity increases as the viscosity-ratio between the bubble and the fluid around it increases. In this research, mass conservation was investigated with greater accuracy than that of previous studies using the level set method.


► The pressure field is calculated in addition to the velocity components.
► A level-set method has been applied to trace the interface.
► The internal circulation increases as the viscosity-ratio of the phases increase.
► Mass conservation was investigated with greater accuracy.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Nuclear Energy - Volume 38, Issue 12, December 2011, Pages 2770–2778
نویسندگان
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