Abstract
Axial flow pump is a kind of typical pumps with rotor-stator interaction, thus the measurement of the flow field between impeller and guide vane would facilitate the study of the internal rotor-stator interaction mechanism. Through a structural modification of a traditional axial flow pump, the requirements of particle image velocimetry (PIV) measurement are met. Under the condition of opt. 0.8Q opt., the axial vortex is identified between impeller hub and guide vane hub, which is developed into the main flow and to affect the movement when the relative positions of impeller and guide vane at different flow rates are the same. Besides, the development and the dissipation of the tip leakage and the passage vortex in impeller passages are mainly responsible for the difference of the flow field close to the outer rim. As the flow rate decreases, the distribution of the meridional velocities at the impeller outlet becomes more non-uniform and the radial velocity component keeps increasing. The PIV measurement results under the condition of opt. 1.0Q opt. indicate that the flow separation and the trailing vortex at the trailing edge of a blade are likely to result in a velocity sudden change in this area, which would dramatically destroy the continuity of the flow field. Moreover, the radial direction of the flow between impeller and guide vane on the measurement plane does not always point from hub to rim. For a certain position, the direction is just from rim to hub, as is affected by the location of the intersection line of the shooting section and the impeller blade on the impeller as well as the angle between the intersection line and the rotating shaft.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
LIANG Kai-hong, CAO Shu-liang and CHEN Yan et al. Large-eddy simulation and analysis of turbulent flow in axial pump impeller[J]. Fluid Machinery, 2009, 37(11): 9–14(in Chinese).
ZHANG De-sheng, PAN Da-zhi and XU Yan et al. Numerical investigation of blade dynamic characteristics in an axial flow pump[J]. Journal of Thermal Science, 2013, 17(5): 1511–1514
SAITO S., SHIBATA M. and FUKAE H. et al. Computational cavitation flows at inception and light stages on an axial-flow pump blade and in a cage-guided control valve[J]. Journal of Thernal Science, 2007, 16(4): 337–345.
QIAN Zhong-dong, WANG Yan and HUAI Wen-xin et al. Numerical simulation of water flow in an axial flow pump with adjustable vanes[J]. Journal of Mechanical Science and Technology, 2010, 24(4): 971–976
MINER S. M. 3-D viscous flow analysis of an axial flow pump impeller[J]. International Journal of Rotating Machinery, 1997, 3(3): 153–161
TREMANTE A., MORENO N. and REY R. et al. Numerical turbulent simulation of the two-phase (liquid/gas) through a cascade of an axial pump[J]. Journal of Fluids Engineering, 2002, 124(2): 371–376
ZHANG Rui, CHEN Hong-xun. Numerical analysis of cavitation within slanted axial-flow pump[J]. Journal of Hydrodynamics, 2013, 25(5): 663–672
LIANG Kai-hong, ZHANG Ke-wei and XU Li. Analysis of the flow through the blade tip clearances of axial pumps by CFD[J]. Journal of Huazhong University of Science and Technology: Nature Science Edition, 2004, 32(9): 36–38(in Chinese).
DAI Chen-chen. Numerical analysis of tip clearance flow characteristic in axial flow pump[J]. Fluid Mechinery, 2009, 37(6): 32–35(in Chinese).
FURUKAWA A., SHIGEMITSU T. and WATANABE S. Performance test and flow measurement on contrarotating axial flow pump[J]. Journal of Thermal Science, 2007, 16(1): 7–13
DURMUS K. Experimental study on regaining the tangential velocity energy of axial flow pump[J]. Energy and Management, 2003, 44(11): 1817–1829
ZHANG De-sheng, SHI Wei-dong and CHEN Bin et al. Unsteady flow analysis and experimental investigation of axial-flow pump[J]. Journal of Hydrodynamics, 2010, 22(1): 35–43
LI Zhong, YANG Min-guan and WANG Xiao-kun. Experimental study of guide vane influence on performance of axial-flow pump[J]. Drainage and Irrigation Machinery, 2009, 27(1): 15–18(in Chinese).
SHIGEMITSU T., FURUKAWA A. and WATANABE S. et al. Experimental analysis of internal flow of contra-rotating axial flow pump[C]. Proceedings of 8th International Symposium on Experimental and Computational Aerothermodynamics of Internal Flows. Lyon, France, 2007.
TORU S., AKINORI F. and SATOSHI W. et al. Air/water two-phase flow performance of contra-rotating axial flow pump and rotational speed control of rear rotor[ C]. ASME Fluids Engineering Division Summer Meeting and Exhibition. Houston, TX, USA, 2005.
SUN Z., KANG X. Q. and WANG X. H. Experimental system of cavitation erosion with water-jet[J]. Materials and design, 2005, 26(1): 59–63
ZHNAG Hua, CHEN Bin and SHI Wei-dong et al. Effect of contraction-type impeller on non-overloaded perfoemance for low-specific-speed sewage pump[J]. Journal of Mechanical Science and Technology, 2014, 28(3): 937–944
UZOL O., CHOW Y. C. and KATZ J. et al. Unobstructed particle image velocimetry measurements within an axial turbo-pump using liquid and blades with matched refractive indices[J]. Experiments in Fluids, 2002, 33(6): 909–919
WU H., MIORINI R. L. and KATZ J. Measurements of the tip leakage vortex structures and turbulence in the meridional plane of an axial water-jet pump[J]. Experiments in Fluids, 2011, 50(4): 989–1003
SHI Wei-dong, ZHANG Hua and CHEN Bin et al. Numerical simulation of internal flow in axial-flow pump with different blade tip clearance sizes[J]. Journal of Drainage and Irrigation Machinery Engineering, 2010, 28(5): 374–377(in Chinese).
Author information
Authors and Affiliations
Corresponding author
Additional information
Project supported by the National Twelfth Five-year Supporting Plan of China (Grant No. 2011BAF14B01), the Priority Academic Program Development of Jiangsu Higher Education Institutions, also by Graduate innovation program of Jiangsu Province (Grant No. CXLX12_0643).
Biography: ZHANG Hua (1988-), Male, Ph. D.
Rights and permissions
About this article
Cite this article
Zhang, H., Shi, Wd., Chen, B. et al. Experimental study of flow field in interference area between impeller and guide vane of axial flow pump. J Hydrodyn 26, 894–901 (2014). https://doi.org/10.1016/S1001-6058(14)60098-6
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1016/S1001-6058(14)60098-6