In Part 1 of this paper, the unsteady velocity field derived from slanted hot-film measurements was presented and interpreted. In this part, the stagnation pressure (Kulite probe) and temperature data (Aspirating Probe) is integrated with the velocity data (hot-film probe) to derive a composite flow field description of the steady and unsteady flow behavior downstream of the second stator of a three stage axial flow compressor at the peak efficiency operating condition. Detailed mechanisms for various flow field features such as the hub clearance flow and the suction surface-casing endwall comer region have been analyzed based on the composite flow field. The feasibility of correlating the deterministic velocity and temperature distributions to develop stress and heat-flux terms to be used in Part 3 of this paper are explored. The results indicate that major blockage is caused in the stator hub endwall leakage flow and its possible subsequent rollup into a vortex and in the casing endwall region due to suction surface casing endwall comer and secondary flow region. These are also the regions with the highest levels of unsteadiness. From the ensemble averaged velocity, pressure and temperature field it was observed that very good comparison exists between these data sets for the wake properties such as width and depth. The transport of rotor wake towards the pressure side of the stator is confirmed through an integrated interpretation of all the flow properties.
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ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition
June 2–5, 1998
Stockholm, Sweden
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-7862-0
PROCEEDINGS PAPER
Steady and Unsteady Three Dimensional Flow Field Downstream of an Embedded Stator in a Multistage Axial Flow Compressor: Part 2 — Composite Flow Field
N. Suryavamshi,
N. Suryavamshi
The Pennsylvania State University, University Park, PA
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B. Lakshminarayana,
B. Lakshminarayana
The Pennsylvania State University, University Park, PA
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J. Prato
J. Prato
The Pennsylvania State University, University Park, PA
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N. Suryavamshi
The Pennsylvania State University, University Park, PA
B. Lakshminarayana
The Pennsylvania State University, University Park, PA
J. Prato
The Pennsylvania State University, University Park, PA
Paper No:
98-GT-522, V001T01A127; 15 pages
Published Online:
December 23, 2014
Citation
Suryavamshi, N, Lakshminarayana, B, & Prato, J. "Steady and Unsteady Three Dimensional Flow Field Downstream of an Embedded Stator in a Multistage Axial Flow Compressor: Part 2 — Composite Flow Field." Proceedings of the ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition. Volume 1: Turbomachinery. Stockholm, Sweden. June 2–5, 1998. V001T01A127. ASME. https://doi.org/10.1115/98-GT-522
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