Open Journal of Fluid Dynamics

Volume 3, Issue 4 (December 2013)

ISSN Print: 2165-3852   ISSN Online: 2165-3860

Google-based Impact Factor: 0.96  Citations  h5-index & Ranking

Numerical Analysis of the Losses in Unsteady Flow through Turbine Stage

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DOI: 10.4236/ojfd.2013.34031    4,628 Downloads   8,083 Views  Citations

ABSTRACT

This paper presents an analysis of the operation of a stage of an aircraft engine gas turbine in terms of generation of flow losses. The energy loss coefficient, the entropy loss coefficient and an additional pressure loss coefficient were adopted to describe the losses quantitatively. Distributions of loss coefficients were presented along the height of the blade channel. All coefficients were determined based on the data from the unsteady flow field and analyzed for different mutual positioning of the stator and rotor blades. The flow calculations were performed using the Ansys CFX commercial software package. The analyses presented in this paper were carried out using the URANS (Unsteady Reynolds-Averaged Navier-Stokes) method and two different turbulence models: the common Shear Stress Transport (SST) model and the Adaptive-Scale Simulation (SAS) turbulence model, which belongs to the group of hybrid models.

Share and Cite:

S. Dykas, W. Wróblewski and D. Machalica, "Numerical Analysis of the Losses in Unsteady Flow through Turbine Stage," Open Journal of Fluid Dynamics, Vol. 3 No. 4, 2013, pp. 252-260. doi: 10.4236/ojfd.2013.34031.
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