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Surface non-conformances on the low pressure turbine outlet guide vane flow

Manan Lalit (Institutionen för tillämpad mekanik, Strömningslära) ; Valery Chernoray (Institutionen för tillämpad mekanik, Strömningslära) ; J. Larsson
27th Congress of the International Council of the Aeronautical Sciences 2010, ICAS 2010; Nice; France; 19 September 2010 through 24 September 2010 Vol. 4 (2010), p. 2851-2859.
[Konferensbidrag, refereegranskat]

During manufacturing and in-service of the outlet guide vanes various irregularities on the vane surface can occur. These irregular shapes are surface non-conformances in the form of welds, traces or repairs of various forms. Improvement of the aerodynamic performance of the guide vanes requires understanding of the impact of these technological features on the flow field and aerodynamics. Experimental study is performed in a linear cascade facility at Chalmers University. In focus of current work are non-conformances in form of welding traces. The model welding traces were placed at different locations on the suction side of the vane. The influence of these non-conformances on the cascade aerodynamics is evaluated and validation of CFD results obtained by the k-ε realizable and k-ω SST turbulence models is performed.

Nyckelord: Flow separation; Guide vane; Losses; Turbulence modelling; Wall protuberance



Denna post skapades 2015-05-05. Senast ändrad 2016-07-15.
CPL Pubid: 216456

 

Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Strömningslära

Ämnesområden

Teknisk mekanik

Chalmers infrastruktur