Abstract
Tip leakage flow between axial fan rotor and casing plays an important role in the aerodynamic performance of the fan. One of the new techniques to control tip leakage is developed as tip winglet which is also named as partial shroud in turbine cascade. Based upon NACA65-010 airfoil, it is proposed in this paper a linear cascade model to investigate the tip leakage flow patterns with and without blade winglets. Uniform width winglet is chosen for comparing the effect of different winglet orientations under alternative tip clearance conditions. Flow structures obtained from PIV measurements showed that tip winglet can not change the fundamental leakage flow structure. Its main effort is to provide extra flow resistance to the leakage flow which i alleviates leakage flow to limited extent.
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© 2009 Tsinghua University Press, Beijing and Springer-Verlag GmbH Berlin Heidelberg
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Dai, R., Huang, Z., Chen, Z., Chen, K. (2009). PIV Study of Tip Leakage Flow in Linear Compressor Cascade. In: Xu, J., Wu, Y., Zhang, Y., Zhang, J. (eds) Fluid Machinery and Fluid Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-89749-1_23
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DOI: https://doi.org/10.1007/978-3-540-89749-1_23
Publisher Name: Springer, Berlin, Heidelberg
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