پیوندهای مفید
اخبار و اعلانات
آمار
| تعداد نشریات | 161 |
| تعداد شمارهها | 6,532 |
| تعداد مقالات | 70,502 |
| تعداد مشاهده مقاله | 124,116,408 |
| تعداد دریافت فایل اصل مقاله | 97,220,923 |
Impeller and volute design and optimization of the centrifugal pump with low specific speed in order to extract performance curves | ||
| Journal of Computational Applied Mechanics | ||
| مقاله 15، دوره 49، شماره 2، اسفند 2018، صفحه 359-366 اصل مقاله (898.56 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/jcamech.2018.246099.211 | ||
| نویسندگان | ||
| Amir Javanbakht* ؛ hossein ahmadi danesh ashtian | ||
| Department of Mechanical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran | ||
| چکیده | ||
| Now a day centrifugal pumps are vital components of industries. Certainly, one of the most important specifications of centrifugal pumps are the performance curves. In the present work, performance curves of a centrifugal pumps are obtained by Computational fluid dynamics (CFD) and as an outcome, CFD results compare by practical curves. At the first step impeller and volute are designed with two standards and at the end former design completed by automatic design process using CFturbo software. For this purpose, full 3D-RANS equations in coupled with SST turbulence model are solved for several flow rate between 20% and 140% of the operation condition by means of a commercial code, CFX. This simulation is defined by means of the multi-reference frame technique in which the impeller is situated in the rotating reference frame, and the volute is in the fixed reference frame. Proposed simulation is based on a steady state flow, non-Newtonian, incompressible and constant property condition. Operation point is simulated to get the total head and then non-operation points are simulated to obtain performance curves. Practical curves and numerical ones are in good agreement, so numerical approach could be a perfect way to make centrifugal pump design better and easier. Indeed pump simulation with CFD approach can increase our knowledge about pump behavior such as consumption energy, trimming process and saving energy before we have any activities on the pump so the predictions have bettering and excise about any process on the pump. | ||
| کلیدواژهها | ||
| Turbulence fluid flow؛ Centrifugal pump design؛ Computational fluid dynamic (CFD)؛ Centrifugal pump curves؛ Periodic boundary condition | ||
| مراجع | ||
|
[1] P. Cooper, E. Graf, T. Luce, Computational fluid dynamical analysis of complex internal flows in centrifugal pumps, in Proceeding of, 83-94.
[2] A. Bahreini, A. Sattari, Numerical and Economic Study of Centrifugal Pumps As Turbine Performance, JCAMECH, Vol. 48, No. 2, pp. 151-159, 2017.
[3] F. A. Muggli, P. Holbein, P. Dupont, CFD calculation of a mixed flow pump characteristic from shutoff to maximum flow, Journal of fluids engineering, Vol. 124, No. 3, pp. 798-802, 2002.
[4] J. González, J. Fernández, E. Blanco, C. Santolaria, Numerical simulation of the dynamic effects due to impeller-volute interaction in a centrifugal pump, Journal of Fluids Engineering, Transactions of the ASME, Vol. 124, No. 2, pp. 348-355, 2002.
[5] J. F. Guelich, J. N. Favre, K. Denus, An assement of pump impeller performance predictions by 3D Navier-Stokes calculations, Proceedings of the ASME Fluids Engineering Division Summer Meeting, 1997.
[6] M. Asuaje, F. Bakir, S. Kouidri, F. Kenyery, R. Rey, Numerical modelization of the flow in centrifugal pump: Volute influence in velocity and pressure fields, International Journal of Rotating Machinery, Vol. 3, No. 3, pp. 244-255, 2005.
[7] H. Stel, G. D. L. Amaral, C. O. R. Negrão, S. Chiva, V. Estevam, R. E. M. Morales, Numerical Analysis of the Fluid Flow in the First Stage of a Two-Stage Centrifugal Pump With a Vaned Diffuser, Journal of Fluids Engineering, Vol. 135, No. 7, pp. 071104-071104, 2013.
[8] M. H. Shojaeefard, M. Tahani, M. B. Ehghaghi, M. A. Fallahian, M. Beglari, Numerical study of the effects of some geometric characteristics of a centrifugal pump impeller that pumps a viscous fluid, Computers & Fluids, Vol. 60, pp. 61-70, 5/15/, 2012.
[9] H. Alemi, S. A. Nourbakhsh, M. Raisee, A. F. Najafi, Effects of volute curvature on performance of a low specific-speed centrifugal pump at design and off-design conditions, Journal of Turbomachinery, Vol. 137, No. 4, pp. 041009, 2015.
[10] Z. Gao, W. Zhu, L. Lu, J. Deng, J. Zhang, F. Wuang, Numerical and experimental study of unsteady flow in a large centrifugal pump with stay vanes, Journal of Fluids Engineering, Vol. 136, No. 7, pp. 071101, 2014.
[11] M. Nataraj, R. Ragoth Singh, Analyzing pump impeller for performance evaluation using RSM and CFD, Desalination and Water Treatment, Vol. 52, No. 34-36, pp. 6822-6831, 2014/10/15, 2014.
[12] Y. Fu, J. Yuan, S. Yuan, G. Pace, L. d'Agostino, P. Huang, X. Li, Numerical and Experimental Analysis of Flow Phenomena in a Centrifugal Pump Operating Under Low Flow Rates, Journal of Fluids Engineering, Vol. 137, No. 1, pp. 011102-011102, 2014.
[13] Y. Wang, H. Liu, D. Liu, S. Yuan, J. Wang, L. Jiang, Application of the two-phase three-component computational model to predict cavitating flow in a centrifugal pump and its validation, Computers & Fluids, Vol. 131, pp. 142-150, 2016.
[14] J. F. Gülich, 2007, Centrifugal Pumps, Springer Berlin Heidelberg,
[15] A. inc, Ansys CFX solver theory guide, 2014.
[16] S. Y. M. Tan, H. Lin, Numerical Research on Performance Prediction for Centrifugal Pumps, Chinese journal of mechanical engineering, No. No. 1, pp. 21-28, 2010. | ||
|
آمار تعداد مشاهده مقاله: 730 تعداد دریافت فایل اصل مقاله: 1,569 |
||