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International Journal of Engineering، جلد ۳۵، شماره ۲، صفحات ۳۰۷-۳۱۸
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عنوان انگلیسی Numerical Study of Water-air Ejector using Mixture and Two-phase Models
چکیده انگلیسی مقاله In this research, steady-state Mixture and Eulerian-Eulerian method for liquid-gas parallel flow ejector were examined. The simulation demonstrated that the Mixture model simulation represents better and efficient. The Eulerian-Eulerian model needed longer computational time and had a complexity to achieve the optimal convergence. However, both methods' performances were shown slightly similar. The models indicated a difference of about 6% in the flow rate ratio, their pressure diagrams nearly coincide, and their velocity parameter varies by 7% by comparing to the existing experimental data. Additionally, the Mixture model results appropriately conformed much better to the experimental data. So, the Mixture model was chosen for futher parametric study. Simulation results indicated that the flow rate ratio decreases by increasing the throat's cross-sectional area, and the flow rate ratio increases by increasing the nozzle's cross-sectional area. In this regard, e.g., the flow rate ratio of ejector by increasing pressure from 70 to 80 kPa, the air inlet increases up to 94%, and by increasing ejector outlet pressure, the flow rate ratio reduces such that no suction can be observed at 160 kPa. Consequently, at 150 kPa pressure ratio, the flow rate ratio was reduced by almost 100%.
کلیدواژه‌های انگلیسی مقاله Liquid-gas ejector,Two-phase flow,Mixture method,Eulerian-Eulerian method,numerical simulation
نویسندگان مقاله M. R. Assari |
Department of Mechanical Engineering, Jundi-Shapur University of Technology, Dezful, Iran

H. Basirat Tabrizi |
Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran

A. Jafar Gholi Beik |
Department of Mechanical Engineering, Jundi-Shapur University of Technology, Dezful, Iran

K. Shamesri |
Department of Mechanical Engineering, Jundi-Shapur University of Technology, Dezful, Iran

نشانی اینترنتی https://www.ije.ir/article_139876_097a99faf9a6ab78d8d37f933be83961.pdf
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