As LP steam turbines are asked to work at strong part-loads, LSB stalled and unstalled flutter may occur. Testing on a downscaled steam turbine in T10 MW test plant have been carried out to measure LSB aggregated damping at low load. Also numerical analysis to predict aerodynamic damping have been done, and results have been compared to experimental data allowing software tool validation at low load.
EXPERIMENTAL AND NUMERICAL ASSESSMENT OF A LAST STAGE ST BLADE DAMPING AT LOW LOAD OPERATION / Bessone, Andrea; Carassale, Luigi; Guida, Roberto; Kubín, Zdeněk; Lo Balbo, Antonio Alfio; Brunenghi, Michela Marrè; Pinelli, Lorenzo. - ELETTRONICO. - 20:(2018), pp. 16-28. (Intervento presentato al convegno TURBOMACHINES 2018) [10.14311/app.2018.20.0016].
EXPERIMENTAL AND NUMERICAL ASSESSMENT OF A LAST STAGE ST BLADE DAMPING AT LOW LOAD OPERATION
Pinelli, Lorenzo
2018
Abstract
As LP steam turbines are asked to work at strong part-loads, LSB stalled and unstalled flutter may occur. Testing on a downscaled steam turbine in T10 MW test plant have been carried out to measure LSB aggregated damping at low load. Also numerical analysis to predict aerodynamic damping have been done, and results have been compared to experimental data allowing software tool validation at low load.
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