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Endwall Heat Transfer Measurements of an Outlet Guide Vane at on and off Design Conditions

Lei Wang ; Sundén Bengt ; Valery Chernoray (Institutionen för tillämpad mekanik, Strömningslära) ; Abrahamsson Hans
ASME Turbo Expo 2013: Turbine Technical Conference and Exposition, GT 2013; San Antonio, Tx; United States; 3 June 2013 through 7 June 2013 Vol. 3C (2013), p. 1-8.
[Konferensbidrag, refereegranskat]

The endwall heat transfer characteristics of forced flow past outlet guide vanes (OGVs) in a linear cascade have been investigated by using a liquid crystal thermography (LCT) method. The Reynolds number is kept at 250,000 and both on-and off design conditions are tested. For the on-design condition where the incidence angle of OGVs is 30°, no obvious flow separation phenomenon was observed; on the contrary, for the off-design conditions where the incidence angle of OGVs is 0° and -31°, respectively, remarkable flow separation was noticed. The results indicate that the incidence angle of OGVs has a significant effect on the endwall heat transfer. In general, the endwall heat transfer coefficients for the off-design conditions are higher than the corresponding on-design condition. In addition, a preliminary CFD analysis was performed and presented. Basically, the results are consistent with the experiments but further investigations are needed in the future work.

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Denna post skapades 2013-12-18. Senast ändrad 2015-03-24.
CPL Pubid: 189877


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