Browse > Article
http://dx.doi.org/10.7837/kosomes.2017.23.1.104

Internal Flow Analysis of Seawater Cooling Pump using CFD  

Bao, Ngoc Tran (Graduate School of Mokpo National Maritime University)
Yang, Chang-jo (Division of Marine Engineering, Mokpo National Maritime University)
Kim, Bu-gi (Division of Mechatronics Engineering, Mokpo National Maritime University)
Kim, Jun-ho (Division of Mechatronics Engineering, Mokpo National Maritime University)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.23, no.1, 2017 , pp. 104-111 More about this Journal
Abstract
This research focuses on simulation and visualization of flow field characteristics inside a centrifugal pump. The 3D numerical analysis was carried out by using a numerical CFD tool, addressing a Reynolds Average Navier-Stock code with a standard k-${\varepsilon}$ two-equation turbulence model. The simulation accounts for friction head loss due to rough walls at suction, impeller, discharge areas and volumetric head loss at impeller wear ring. A comparison of performance curves between simulation and experimentation is included, and it reveals a same trend of those results with a small difference of maximum 5 %. At best efficiency point, velocity vectors are smooth but it changes significantly under off-design point, a strong recirculation appears at the outlet of impeller passages near tongue area. A relatively uniform preassure distribution was observed around the impeller in despite of the tongue. Within the volute, because of its geometry, spiral vortexes formed, proving that the flow field in this region was relatively turbulent and unsteady.
Keywords
Centrifugal pump; CFD; Velocity field; Pressure distribution; Vortex formation;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Asuaje, M., F. Bakir, G. Kergourlay, R. Noguera and R. Key (2006), Three-dimensional Quasi-steady flow simulation in a centrifugal pump: Comparision with experiment results, Journal of Power and Energy, Vol. 220, pp. 239-256.   DOI
2 Bacharoudis, E. C., A. E. Filios, M. D. Mentzos and D. P. Margaris(2008), Parametric study on a centrifugal pump impeller by varying the outlet blade angle, The Open Mechanical Engineering Journal, No. 2, pp. 75-83.
3 Byskov, D. R. K., C. B. Jacobsen and N. Pedersen(2003), Flow in a centrifugal pump impeller at design and off-design condition-part II: large eddy simulations, ASME Journal of Fluid Engineering, Vol. 125, No. 1, pp. 73-83.   DOI
4 Cheah, K. W., T. S. Lee and S. H. Winoto(2011), Numerical study of Inlet and Impeller flow structure in a centrifugal pump at design and off-design points, International Journal of Fluid machinery and System, Vol. 4, No. 1, pp. 182-191.
5 Ferziger, J. H. and M. Peric(1996), Computational Method of Fluid Dynamics, Springer, Berlin, Germany.
6 Gu, F., A. Engeda, M. Cave and J. L. Diliberti(2001), A numerical investigation on the volute/diffuser interaction due to axial distortion at the impeller exit, ASME Journal of Fluid Engineering, Vol. 123, No. 3, pp. 475-483.   DOI
7 Majidi, K. and H. E. Siekmann(2000), Numerical simulation of secondary flow in pump volute and circular casing using 3D viscous flow techniques, International Journal of Rotating Machinery, Vol. 6, No. 4, pp. 245-252.   DOI