The Effect of Vane Clocking on the Unsteady Flow Field in a One-and-a-Half Stage Transonic Turbine-Reference-Cited by-同舟云学术

The Effect of Vane Clocking on the Unsteady Flow Field in a One-and-a-Half Stage Transonic Turbine

Published:2008-05-07 Issue:3 Volume:130 Page:
ISSN:0889-504X
Container-title:Journal of Turbomachinery
language:en
Short-container-title:

Author:

Schennach O.¹,Pecnik R.¹,Paradiso B.²,Göttlich E.¹,Marn A.¹,Woisetschläger J.¹

Affiliation:

1. Institute for Thermal Turbomachinery and Machine Dynamics, Graz University of Technology, Graz 8010, Austria

2. Laboratorio di Fluidodinamica delle Macchine, Dipartimento di Energetica, Politecnico di Milano, 20133 Milano, Italy

Abstract

The current paper presents the results of numerical and experimental clocking investigations performed in a high-pressure transonic turbine with a downstream vane row. The objective was a detailed analysis of shock and wake interactions in such a 1.5-stage machine while clocking the vanes. Therefore, a transient 3D Navier–Stokes calculation was done for two clocking positions, and the three-dimensional results are compared with laser-Doppler-velocimetry measurements at midspan. Additionally, the second vane was equipped with fast response pressure transducers to record the instantaneous surface pressure for 20 different clocking positions at midspan.

Publisher

ASME International

Subject

Mechanical Engineering

Link

http://asmedigitalcollection.asme.org/turbomachinery/article-pdf/doi/10.1115/1.2777199/5846192/031022_1.pdf

Reference22 articles.

1. Time-Resolved Vane-Rotor Interaction in a High-Pressure Turbine Stage;Miller;ASME J. Turbomach.

2. Some Aspects of Wake-Wake Interactions Regarding Turbine Stator Clocking;Tiedemann;ASME J. Turbomach.

3. König, S., Heidecke, A., Stoffel, B., Fiala, A., and Engel, K., 2004, “Clocking Effects in a 1.5-Stage Axial Turbine—Boundary Layer Behaviour at Midspan,” ASME Paper No. GT2004-54055.

4. Wake-Wake Interaction and Its Potential for Clocking in a Transonic High-Pressure Turbine;Hummel;ASME J. Turbomach.

5. Performance Improvement Through Indexing of Turbine Airfoils: Part 1-Experimental Investigation;Huber;ASME J. Turbomach.

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