Coupling simulation of fluid structure interaction in the stirred vessel with a pitched blade turbine

doi:10.1016/j.cjche.2017.10.026

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (5): 922-929.DOI: 10.1016/j.cjche.2017.10.026

• Fluid Dynamics and Transport Phenomena • 上一篇下一篇

Coupling simulation of fluid structure interaction in the stirred vessel with a pitched blade turbine

Yangyang Liang¹, Zhengming Gao¹, Dai'en Shi², Wanli Zhao¹, Ziqi Cai¹

1 State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
2 Mechanical Engineering School, Yancheng Institute of Technology, Yancheng 224051, China

收稿日期:2017-08-06 修回日期:2017-09-27 出版日期:2018-05-28 发布日期:2018-06-29
通讯作者: Ziqi Cai,E-mail address:caiziqi@mail.buct.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China (21376016).

Coupling simulation of fluid structure interaction in the stirred vessel with a pitched blade turbine

Yangyang Liang¹, Zhengming Gao¹, Dai'en Shi², Wanli Zhao¹, Ziqi Cai¹

1 State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
2 Mechanical Engineering School, Yancheng Institute of Technology, Yancheng 224051, China

Received:2017-08-06 Revised:2017-09-27 Online:2018-05-28 Published:2018-06-29
Contact: Ziqi Cai,E-mail address:caiziqi@mail.buct.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China (21376016).

摘要/Abstract

摘要： The interaction between fluid and a down-pumping pitched blade turbine fixed with a flexible shaft in the stirred vessel, as a typical fluid structure interaction phenomenon, was simulated by coupling the Computational Fluid Dynamics and Computational Structural Dynamics. Based on the verification of the simulated impeller torque and dimensionless shaft bending moment with experimental result, the dimensionless shaft bending moment and various loads acting on impeller (including lateral force, axial force and bending moment) were discussed in detail. By separating and extracting the fluid and structural components from those loads, the results show that the shaft bending moment mainly results from the lateral force on impeller although the axial force on impeller is much larger. The impeller mass imbalance increases the shaft bending moment and the lateral force on impeller, but has little influence on the axial force and bending moment acting on impeller. The dominant frequencies of impeller forces are macro-frequency, speed frequency and blade passing frequency, and are associated with the impeller mass imbalance.

关键词: Fluid structure interaction, Shaft bending moment, Impeller lateral force, Impeller axial force, Bending moment on impeller

Abstract: The interaction between fluid and a down-pumping pitched blade turbine fixed with a flexible shaft in the stirred vessel, as a typical fluid structure interaction phenomenon, was simulated by coupling the Computational Fluid Dynamics and Computational Structural Dynamics. Based on the verification of the simulated impeller torque and dimensionless shaft bending moment with experimental result, the dimensionless shaft bending moment and various loads acting on impeller (including lateral force, axial force and bending moment) were discussed in detail. By separating and extracting the fluid and structural components from those loads, the results show that the shaft bending moment mainly results from the lateral force on impeller although the axial force on impeller is much larger. The impeller mass imbalance increases the shaft bending moment and the lateral force on impeller, but has little influence on the axial force and bending moment acting on impeller. The dominant frequencies of impeller forces are macro-frequency, speed frequency and blade passing frequency, and are associated with the impeller mass imbalance.

Key words: Fluid structure interaction, Shaft bending moment, Impeller lateral force, Impeller axial force, Bending moment on impeller

Yangyang Liang, Zhengming Gao, Dai'en Shi, Wanli Zhao, Ziqi Cai. Coupling simulation of fluid structure interaction in the stirred vessel with a pitched blade turbine[J]. Chinese Journal of Chemical Engineering, 2018, 26(5): 922-929.

参考文献

[1] S. Roy, S. Acharya, M.D. Cloeter, Flow structure and the effect of macro-instabilities in a pitched blade stirred tank, Chem. Eng. Sci. 65(2010) 3009-3024.

[2] P. Hasal, I. Fort, J. Kratena, Force effects of the macro-instability of flow pattern on radial baffles in a stirred vessel with pitched-blade and Rushton turbine impellers, Chem. Eng. Res. Des. 82(2004) 1268-1281.

[3] K.V. Riet, W. Bruijn, J.M. Smith, Real and pseudo-turbulence in the discharge stream from a Rushton turbine, Chem. Eng. Sci. 31(1976) 407-112.

[4] R. Escudie, A. Line, Experimental analysis of hydrodynamics in a radially agitated tank, AICHE J. 49(2003) 585-603.

[5] X.H. Liu, Y.H. Bao, Z.P. Li, Z.M. Gao, J.M. Smith, Particle image velocimetry study of turbulence characteristics in a vessel agitated by a dual Rushton impeller, Chin. J. Chem. Eng. 16(2008) 700-708.

[6] D.E. Shi, Y.Y. Liang, A. Eaglesham, Z.M. Gao, Effect of the impeller imbalance on the bending moment acting on an overhung shaft in a stirred vessel, Chem. Eng. Res. Des. 92(2014) 2191-2200.

[7] N.R. Kippers, A.G.L. Holloway, Experiments on the whirling of pitched blade impellers in baffled mixing vessels, J. Fluid Struct. 49(2014) 29-52.

[8] D.E. Shi, T. Lu, A. Eaglesham, Z.M. Gao, Characteristics of the bending moment acting on an overhung shaft in a stirred vessel, Int. J. Chem. React. Eng. 12(2014) 135-150.

[9] G.L. Lane, G.D. Rigby, G.M. Evans, Pressure distribution on the surface of Rushton turbine blades-experimental measurement and prediction by CFD, J. Chem. Eng. Jpn 34(2001) 613-620.

[10] T. Berger, M. Fischer, K. Strohmeier, Fluid-structure interaction of stirrers in mixing vessels, Trans. ASME 125(2003) 440-445.

[11] T. Berger, K. Strohmeier, Numerical simulation of stirrer oscillations in consideration of fluid-structure-interaction and flexible restraint systems, Proceedings of the ASME Pressure Vessels and Piping Division Conference, AICHE J, Cleveland Ohio, 2003 pp.

[12] K.M. Mohamed, A.G. Gerber, G.A.L. Holloway, Modelling of hydrodynamic forces on a whirling mixing vessel stirrer including fluid-structure interaction, Proceedings of the ASME Pressure Vessels and Piping Division Conference, J. Chem. Eng. Jpn, Prague, Czech Republic, 2009 pp.

[13] G.C. Cudmore, A.G.L. Holloway, A.G. Gerber, Whirl instability of a rotating impeller in a baffled mixing vessel, Proceedings of the ASME Pressure Vessels and Piping Division Conference, J. Chem. Eng. Jpn, Paris, France, 2013(pp.).

[14] D.E. Shi, Z.Q. Cai, A. Eaglesham, Z.M. Gao, Coupling simulation of lateral fluid structure interaction in a stirred vessel with a Rushton turbine, J. Chem. Eng. Jpn 48(2015) 147-157.

[15] S. Karray, Z. Driss, A. Kaffel, H. Kchaou, M.S. Abid, Fluid-structure interaction in a stirred vessel equipped with a Rushton turbine, Int. J. Mech. Appl. 2(2012) 129-139.

[16] S. Karray, Z. Driss, A. Kaffel, H. Kchaou, M.S. Abid, Numerical simulation of fluidstructure interaction in a stirred vessel equipped with an anchor impeller, J. Mech. Sci. Technol. 25(2011) 1749-1760.

[17] Y.L. Young, Fluid-structure interaction analysis of flexible composite marine propellers, J. Fluids Struct. 24(2008) 799-818.

[18] C.Y. Khor, M.Z. Abdullah, F.C. Ani, Study on the fluid/structure interaction at different inlet pressures in molded packaging, Microelectron. Eng. 88(2011) 3182-3194.

[19] B. Landvogt, L. Osiecki, P. Patrosz, T. Zawistowski, B. Zylinski, Numerical simulation of fluid-structure interaction in the design process for a new axial hydraulic pump, Prog. Comput. Fluid Dyn. 14(2014) 31-37.

[20] C.H. Lim, M.Z. Abdullah, I.A. Azid, M.S.A. Aziz, Experimental and numerical investigation of flow and thermal effects on flexible printed circuit board, Microelectron. Reliab. 72(2017) 5-17.

Coupling simulation of fluid structure interaction in the stirred vessel with a pitched blade turbine

Coupling simulation of fluid structure interaction in the stirred vessel with a pitched blade turbine

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