Deterioration of Thermal Barrier Coated Turbine Blades by Erosion
Joint Authors
Swar, Rohan
Hamed, Awatef
Shin, Dongyun
Miller, Robert A.
Woggon, Nathanial
Source
International Journal of Rotating Machinery
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-11-22
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
A combined experimental and computational study was conducted to investigate the erosion of thermal barrier coated (TBC) blade surfaces by alumina particles ingestion in a single-stage turbine.
In the experimental investigation, tests were performed to determine the erosion rates and particle restitution characteristics under different impact conditions.
The experimental results show that the erosion rates increase with increased impingement angle, impact velocity, and temperature.
In the computational simulations, an Euler-Lagrangian two-stage approach is used in obtaining numerical solutions to the three-dimensional compressible Reynolds-Averaged Navier-Stokes equations and the particles equations of motion in each blade passage reference frame.
User defined functions (UDFs) were developed to represent experimentally based correlations for particle surface interaction models and TBC erosion rates models.
UDFs were employed in the three-dimensional particle trajectory simulations to determine the particle rebound characteristics and TBC erosion rates on the blade surfaces.
Computational results are presented in a commercial turbine and a NASA-designed automotive turbine.
The similarities between the erosion patterns in the two turbines are discussed for uniform particle ingestion and for particle ingestion concentrated in the inner and outer 5% of the stator blade span to represent the flow cooling of the combustor liner.
American Psychological Association (APA)
Swar, Rohan& Hamed, Awatef& Shin, Dongyun& Woggon, Nathanial& Miller, Robert A.. 2012. Deterioration of Thermal Barrier Coated Turbine Blades by Erosion. International Journal of Rotating Machinery،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-484143
Modern Language Association (MLA)
Swar, Rohan…[et al.]. Deterioration of Thermal Barrier Coated Turbine Blades by Erosion. International Journal of Rotating Machinery No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-484143
American Medical Association (AMA)
Swar, Rohan& Hamed, Awatef& Shin, Dongyun& Woggon, Nathanial& Miller, Robert A.. Deterioration of Thermal Barrier Coated Turbine Blades by Erosion. International Journal of Rotating Machinery. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-484143
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-484143