The costs of the manufacturing of turbine blades are very dependent on the manufacturing tolerances and the quality of the surface. A good performance of a turbine needs a certain smoothness of the surface and small tolerances. For an optimisation of the costs it is necessary to know the influences of roughness and tolerances on the performance of a turbine. In our institute measurements were carried out with thinned and thickened blades mounted in a turbine, which represents different manufacturing tolerances. In addition measurements on a turbine with roughened blades were done. From these measurements a conclusion on the aerodynamical and thermodynamical behavior of the turbine is obtained. The paper gives a summary of the measurements and shows how the performance of a turbine is affected by the roughness and the profile tolerances.
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January 1976
This article was originally published in
Journal of Engineering for Power
Research Papers
Influences of Manufacturing Tolerances and Surface Roughness of Blades on the Performance of Turbines
K. Bammert,
K. Bammert
Institute for Turbomachinery and Gas Dynamics, University of Hanover, Germany
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H. Sandstede
H. Sandstede
Institute for Turbomachinery and Gas Dynamics, University of Hanover, Germany
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K. Bammert
Institute for Turbomachinery and Gas Dynamics, University of Hanover, Germany
H. Sandstede
Institute for Turbomachinery and Gas Dynamics, University of Hanover, Germany
J. Eng. Power. Jan 1976, 98(1): 29-36 (8 pages)
Published Online: January 1, 1976
Article history
Received:
December 2, 1974
Online:
July 14, 2010
Citation
Bammert, K., and Sandstede, H. (January 1, 1976). "Influences of Manufacturing Tolerances and Surface Roughness of Blades on the Performance of Turbines." ASME. J. Eng. Power. January 1976; 98(1): 29–36. https://doi.org/10.1115/1.3446107
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