Low Reynolds Number Turbulence Models to Simulate the Bubble Plume Behavior with the Euler-Euler Method
سال انتشار: 1400
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 154
فایل این مقاله در 10 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_JAFM-14-1_001
تاریخ نمایه سازی: 15 دی 1400
چکیده مقاله:
This paper presents a comparative assessment of low Reynolds number k- models against standard k- model in an Eulerian framework. Three different low-Re number k- models: Launder-Sharma (LS), Yang-Shih (YS) and AbeKondoh-Nagano (AKN) have been used for the description of bubble plume behaviour in stratified water. The contribution of the gas phase movement into the liquid phase turbulence has been achieved by using the Dispersed with Bubble Induced Turbulence approach (DIS+BIT).The results reveal that the oscillation frequency of gas-liquid flow are correctly reproduced by standard k- and LS models. In fact, we found for standard K- and LS a clear dominant peak at a frequency equal to ۰.۱ Hz. On the other hand, YS and AKN models have predicted chaotic oscillations. The oscillation amplitude of the bubble plume predicted from LS model seems to be in good agreement with the PIV measurements of Besbes et al. (۲۰۱۵). However, for the standard K- model the oscillation amplitude is low. The air-water interface shows that the bubble plume mixing with the stratified water is predicted to be stronger compared to standard k- model.
کلیدواژه ها:
Bubble plume ، Computational fluid dynamics ، Euler ، Low Reynolds number models ، Euler modeling ، Hydrodynamics ، Two ، Phase flow
نویسندگان
S. Besbes
University of Monastir, National School of Engineers of Monastir, Laboratory of Metrology and Energy Systems, Monastir, ۵۰۰۰, Tunisia
M. El Hajem
National Institute of Applied Science Lyon, Laboratory of Fluid Mechanics and Acoustics, ۲۰ Av. A. Einstein, ۶۹۶۲۱ Villeurbanne Cedex, France
H. Ben Aissia
University of Monastir, National School of Engineers of Monastir, Laboratory of Metrology and Energy Systems, Monastir, ۵۰۰۰, Tunisia
J. Y. Champagne
National Institute of Applied Science Lyon, Laboratory of Fluid Mechanics and Acoustics, ۲۰ Av. A. Einstein, ۶۹۶۲۱ Villeurbanne Cedex, France