IGTC-55 Study on the Flow Field of an Internal Cooling Air System through a Hollow Turbine Shaft(Session B-9 BASIC STUDY OF COOLING AIR FLOW)

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概要

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• The swirling flow field including non-axisymmetric phenomena in a rotating hollow turbine shaft is solved using computational fluid dynamics. The three-dimensional compressible Navier-Stokes equations are adopted and discretized by an implicit TVD scheme. No axisymmetric assumption is made. The analysis shows that a rotating spiral vortex exists at the place where the swirling flow turns radially outward, and the first non-axisymmetric mode of the spiral vortex is transformed into the second mode at a specific rotating speed of the shaft. The precession frequency of the rotating spiral vortex obtained by the numerical analysis for the case of the hollow shaft with a cavity between gas turbine disks is in good agreement with the experimentally obtained frequency.

• 公益社団法人日本ガスタービン学会の論文

著者

• Kaji S.

  Department Of Aeronautics And Astronautics University Of Tokyo

• Kishibe T.

  Department of Aeronautics and Astronautics, University of Tokyo

• Kishibe T.

  Department Of Aeronautics And Astronautics University Of Tokyo

関連論文

• Electrical Transport and Magnetoresistance in Co-Al-O Granular Films under High Pressure(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
• IGTC-55 Study on the Flow Field of an Internal Cooling Air System through a Hollow Turbine Shaft(Session B-9 BASIC STUDY OF COOLING AIR FLOW)

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