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2 Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka

2 2005

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Vibro-Acoustic Variations Due to the Clocking Effect in a Two-Stage Turbine

Błaszczak J. R.

Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka

2005

nr 128, vol. 1

61-68

The objective of the presented test program was to investigate vaneindexing effect influence on the performance, noise and vibration of a two-stage turbine. Some measurement results for different circumferential positions of the vanes are described to determine how noise and vibration could be affected by airfoil indexing. Two cases are presented: for nominal rotational speed and for off-design turbine conditions. The investigations have been carried out at the Institute of Turbomachinery (Technical University of Lodz, Poland).

Static Pressure Variations on a Turbine Vane Due to the Clocking Effect

Błaszczak J. R., Borzęcki T.

Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka

2005

nr 128, vol. 1

69-78

The objective of the presented test program was to investigate vane clocking effect influence on the performance of a two-stage model turbine at the Institute of Turbomachinery of the Technical University of Lodz, Poland. Keeping the inlet conditions strictly constant during the tests, two turbine stages were investigated. Herein, some flow measurement results and the machine performance for two indexing positions are described. Comparisons were made with numerical simulation for nominal rotational speed and for off-design turbine conditions.