Computational analysis of flow through turbine inlet guide vane’s passage

الملخص EN

In this work, comparisons between the results of three Computational Fluid Dynamics (CFD) codes are performed.

The computations are made for an inlet guide vane of turbine.

The CFD codes used in the computation are in-house codes.

The computation of the stage 3D code was done at Siemens, Sweden, whereas the turbulent and laminar computations were done at Chalmers University.

H-mesh structure has been used in the computations and k -e model has been tested for the two turbulent codes to figure out the influence of the turbulence model.

The results indicate that, laminar code predicts clearly the wake behind the vane compared with stage 3D, whereas it is limited in turbulent result.

The calculations show that at some points just before the trailing edge from 96% to 98% Cax , on the pressure side, the static pressure decreases sharply up to 20 (kPa) for the turbulent and 14 (kPa) for the laminar flow.

Also it has been found that the calculated kinetic energy in laminar and k -e codes are fairly agreed with stage 3D.

KEYWORDS: Inlet Guide Vane, Computational Fluid Dynamics (CFD), Turbulence Model, Wake, Trailing Edge.