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Moghimi, Mahdi. (1397). Experimental and numerical investigation of bottom outlet hydraulic model. فناوری آموزش, 8(2), 153-164. doi: 10.22061/jcarme.2018.1627.1140
Mahdi Moghimi. "Experimental and numerical investigation of bottom outlet hydraulic model". فناوری آموزش, 8, 2, 1397, 153-164. doi: 10.22061/jcarme.2018.1627.1140
Moghimi, Mahdi. (1397). 'Experimental and numerical investigation of bottom outlet hydraulic model', فناوری آموزش, 8(2), pp. 153-164. doi: 10.22061/jcarme.2018.1627.1140
Moghimi, Mahdi. Experimental and numerical investigation of bottom outlet hydraulic model. فناوری آموزش, 1397; 8(2): 153-164. doi: 10.22061/jcarme.2018.1627.1140

Experimental and numerical investigation of bottom outlet hydraulic model

Journal of Computational & Applied Research in Mechanical Engineering (JCARME)
مقاله 4، دوره 8، شماره 2 - شماره پیاپی 16، اردیبهشت 2019، صفحه 153-164    اصل مقاله (1.19 M)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22061/jcarme.2018.1627.1140
نویسنده
Mahdi Moghimi*
Iran university of science and technology Mechanical Engineering Department
تاریخ دریافت: 26 خرداد 1395،  تاریخ بازنگری: 27 مرداد 1397،  تاریخ پذیرش: 07 شهریور 1397 
چکیده
Using experimental models along with conducting numerical analysis have been widely used in performance recognition and optimization of hydraulic equipments. Numerical modeling has lower cost rather than experimental one; however practical tests are commonly used because of the hydraulic structure importance especially in dams. Meanwhile numerical methods could be used for future designs through validating numerical models. In this paper, volume of fluid method, VOF, has been employed to simulate the free surface flow at the dam bottom outlet form bell mouth section up to the downstream channel. Since the flow through the gates has high Reynolds number, the standard k-ε and also Reynolds Stress Model, RSM, turbulence models is used and the results compared. The discharge coefficient and the ventilated air velocity through the vents is computed numerically and compared with the experimental data. Comparison between the experimental data and numerical simulation results shows good compatibility, especially in RSM turbulence model rather than k-ε turbulence model. The results show that the maximum error percentage in simulation of the discharge coefficient and the ventilated air velocity is 9% and 3% respectively.
کلیدواژه‌ها
Numerical simulation؛ Dam bottom outlet؛ Volume of fluid؛ Ventilation
مراجع
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