26th Congress of International Council of the Aeronautical Sciences
including the 8th AIAA Aviation Technology, Integration, and Operations (ATIO) Conference
14 - 19 September 2008, Anchorage, Alaska, USA
Paper ICAS 2008-4.4.2

INVESTIGATION OF SEPARATION CONTROL FOR LOW-PRESSURE TURBINES USING CFD

H. F. Fasel, W. Balzer, A. Gross
Univ. of Arizona, USA

Keywords: Low-pressure turbine (LPT), computational fluid dynamics (CFD), active flow control (AFC), direct numerical simulation (DNS), vortex generator jets (VGJ)

We investigated low-pressure turbine separation control using direct numerical simulations. Pulsed vortex generator jets were found to be more effective than steady jets. Our simulations show that due to the in-phase actuation of the jets a hydrodynamic instability is exploited for making the control more effective.

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