Experimental and numerical investigation of outlet guide vane and endwall heat transfer with various inlet flow angles
Artikel i vetenskaplig tidskrift, 2016

This paper investigates the heat transfer on the outlet guide vane (OGV) surface and its endwall region. The Reynolds number is fixed at 300,000 and the flow is subsonic. The inlet flow angle is varied from +25 degrees (on-design), to +40 degrees and -25 degrees (off-design). Experiments were conducted in a linear cascade test facility using thermochromic liquid crystal technique. Numerical simulations using RANS were carried out with three turbulence models, i.e., standard k-omega model (k-omega), baseline k-omega model (BSL), and shear stress transport k-omega model (SST). Both the experimental and numerical results are provided and compared. On the OGV surface, boundary layer transition and separation affect the heat transfer significantly and they vary with the inlet flow angle. The abilities of the three models to predict these heat transfer behaviors are revealed. For the on-design case, both BSL and SST models capture the main feature of the heat transfer variations due to transition, but the k-omega model fails. For off-design cases where separation occurs, there are discrepancies found between the calculations and experimental data. On the endwall region, the effects of a horseshoe vortex (HV) on the heat transfer are clearly noticed at the leading edge (LE). The three models perform well to simulate the pitchwise averaged Nusselt number while they always over-predict the strength and size of the HV, which leads to higher heat transfer there compared to the measurements. For off-design conditions, the HV becomes more energetic than that of the on design condition and the pressure side leg departs from the OGV at the inlet flow angle alpha = -25 degrees



Heat transfer measurements

free-stream turbulence

Outlet guide vane




linear turbine cascade

Numerical simulations





transfer predictions


C. L. Wang

Lunds universitet

L. Luo

Harbin Institute of Technology

Lunds universitet

L. Wang

Lunds universitet

Per Fahlén

Lunds universitet

Valery Chernoray

Chalmers, Tillämpad mekanik, Strömningslära

C. Arroyo

GKN Aerospace Services

Hans Abrahamsson

GKN Aerospace Services

International Journal of Heat and Mass Transfer

0017-9310 (ISSN)

Vol. 95 355-367



Strömningsmekanik och akustik



Mer information

Senast uppdaterat