The article deals with the effects of the inlet flow parameters on the flow field structures in axial turbine stage. The experiment was performed on the axial turbine stage rig with an air as a working medium. The variable inlet channel produced the different inlet turbulence intensity and different inlet end-wall boundary layer thickness, resp. different inlet velocity distribution was applied. The turbulence was measured by CTA probes. The measured parameters of the inlet velocity distribution and turbulence intensity across the inlet channel height are presented. Based on the experimental inlet parameters the CFD fully turbulent calculation of the flow field was made. The differences in outlet kinetic energy loss, outlet vane angle and the turbulence distribution in the vane mid-span section are depicted. Changes of secondary flow structures with the different inlet end-wall boundary layer thickness were observed on the vane outlet parameters.
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30 June 2016
THE APPLICATION OF EXPERIMENTAL AND NUMERICAL METHODS IN FLUID MECHANICS AND ENERGY 2016: XX. Anniversary of International Scientific Conference
27–29 April 2016
Terchová, Slovakia
Research Article|
June 30 2016
Effect of end-wall boundary layer and inlet turbulence on the flow field structures in the turbine stage
Tomas Jelinek;
Tomas Jelinek
a)
1
Aerospace Research and Test Establishment
, a.s., Beranových 130, 199 05, Prague, Czech Republic
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Petr Straka;
Petr Straka
b)
1
Aerospace Research and Test Establishment
, a.s., Beranových 130, 199 05, Prague, Czech Republic
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Vaclav Uruba
Vaclav Uruba
c)
2
Institute of Thermomechanics AS CR
, v.v.i., Dolejškova 1402/5, 182 00, Prague, Czech Republic
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AIP Conf. Proc. 1745, 020019 (2016)
Citation
Tomas Jelinek, Petr Straka, Vaclav Uruba; Effect of end-wall boundary layer and inlet turbulence on the flow field structures in the turbine stage. AIP Conf. Proc. 30 June 2016; 1745 (1): 020019. https://doi.org/10.1063/1.4953713
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