کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8071540 | 1521395 | 2018 | 35 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
CFD simulation of two-phase ejector performance influenced by different operation conditions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
In this paper, the influence of temperature phase change on two-phase ejector is investigated by the computational fluid dynamics (CFD) technique. The working fluids used in this research are LNG as primary fluid and BOG as secondary fluid. The transient behavior in the two-phase ejector is simulated to find the optimal operation conditions for higher ejector performance. The axial velocity, pressure and temperature, entrainment ratio, heating coefficient, volume fractions of gas and liquid are obtained under different operation conditions. The predicted values by CFD simulation prove to be in good agreement with on-site test data. Phase change has a significant effect on the performance of LNG-BOG ejector. The results show that entrainment ratio increases with increasing LNG inlet velocity and decreasing mixture outlet pressure. Too high BOG inlet and mixture outlet pressure can result in abnormal ejection. For the specific two-phase ejector described in this paper, the optimal ejection performance is obtained under the conditions with LNG inlet velocity of 11-12â¯m/s, BOG inlet pressure of 0.101-0.507â¯MPa and mixture outlet pressure of 0.101-0.304â¯MPa. This study may provide a beneficial reference for good performance of LNG-BOG ejector and may be helpful for further applications in LNG transportation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 155, 15 July 2018, Pages 1129-1145
Journal: Energy - Volume 155, 15 July 2018, Pages 1129-1145
نویسندگان
Ping Zheng, Bing Li, Jingxuan Qin,