Blade erosion is a serious problem in steam turbines and reduces the life of turbine, requiring periodic maintenance. A fundamental experiment is being performed to evaluate effects of certain control parameters on the droplet formation process and distribution of the shed droplets sizes. Three blade coatings include Epoxy, Teflon®, Viton®, three trailing edge geometries and a new and innovative trailing edge effect are to be experimentally studied. Measurements are to be made in a simulated stationary cascade utilizing real turbine components. The condensed liquid film and the large droplets formed on the three coated blades and one original finish blade will be optically measured. A typical cascade is modeled using Volume of Fluid with different surface properties used to model the formation and breakup of a thin water layer into droplets. Droplet distributions for the various conditions will be compared and the best surface finish and configurations will be identified. Most importantly, the reason for a successful configuration will be given, based on the measurement results.
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ASME 2008 Power Conference
July 22–24, 2008
Lake Buena Vista, Florida, USA
Conference Sponsors:
- Power Division
ISBN:
0-7918-4832-9
PROCEEDINGS PAPER
A Study of Steam Turbine Droplet Formation, Shedding and Blade Impact
Ahmad D. Vakili,
Ahmad D. Vakili
University of Tennessee Space Institute, Tullahoma, TN
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Abraham J. Meganathan,
Abraham J. Meganathan
University of Tennessee Space Institute, Tullahoma, TN
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Gary Golden
Gary Golden
Electric Power Research Institute, Knoxville, TN
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Ahmad D. Vakili
University of Tennessee Space Institute, Tullahoma, TN
Abraham J. Meganathan
University of Tennessee Space Institute, Tullahoma, TN
Gary Golden
Electric Power Research Institute, Knoxville, TN
Paper No:
POWER2008-60123, pp. 299-307; 9 pages
Published Online:
July 8, 2009
Citation
Vakili, AD, Meganathan, AJ, & Golden, G. "A Study of Steam Turbine Droplet Formation, Shedding and Blade Impact." Proceedings of the ASME 2008 Power Conference. ASME 2008 Power Conference. Lake Buena Vista, Florida, USA. July 22–24, 2008. pp. 299-307. ASME. https://doi.org/10.1115/POWER2008-60123
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