Uncertainties in Multi-Stage Rotors Modeled By the Polynomial Chaos Expansion
Abstract eng: In this work the effects of uncertainties in turbomachinery rotors is assessed using the Polynomial Chaos Expansion. The multistage cyclic symmetry approach is used to reduce the size of the problem and the uncertainties are modeled as variations in the material properties of the blades. A numerical example consisting in an assembly of two bladed disc is presented. Results obtained by polynomial chaos are validated by comparisons with MonteCarlo simulations. As a consequence of the included uncertainties changes in nature of modes are observed.
Contributors:
Publisher:
National Technical University of Athens, 2013
Conference Title:
Conference Title:
COMPDYN 2013 - 4th International Thematic Conference
Conference Venue:
Island of Kos (GR)
Conference Dates:
2013-06-12 / 2013-06-14
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.
Record appears in:
Record created 2016-11-15, last modified 2016-11-15
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