Experimental Study on Combined-cascade

B. Yang; Ch. G. Gu

doi:10.1515/tjj-2013-0013

Article

Experimental Study on Combined-cascade

B. Yang and Ch. G. Gu

Published/Copyright: April 23, 2013

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From the journal Int. J. Turbo Jet-Engines Volume 30 Issue 4

Abstract

In this paper, experimental study had been carried out to demonstrate aerodynamic performance of combined-cascade by NACA0012 and NACA63012. Based on results obtained from performance experiments and PIV tests, it is found that the novel combined-cascade has competitive advantages in comparison with a single row of cascade composed by some symmetrical or bi-symmetrical airfoils. The results also reveal that, when two combination parameters, such as overlap ratio and pitch ratio, are set properly, not only is the lift-drag ratio increased, but also the stable working range is improved. Moreover, when overlap ratio is adopted as much as 0.3 and pitch ratio is between 0.4 and 0.5, the combined-cascade is achieved to the optimal performance due to positive interactions between two rows of cascade.

Keywords: combined-cascade; symmetrical airfoil; PIV test; reversal performance

School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai, China

Received: 2013-02-27

Accepted: 2013-03-03

Published Online: 2013-04-23

Published in Print: 2013-12-16

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Articles in the same Issue

https://doi.org/10.1515/tjj-2013-0013

Keywords for this article

combined-cascade; symmetrical airfoil; PIV test; reversal performance