Details
| Original language | English |
|---|---|
| Title of host publication | Ninth International Conference on Vibrations in Rotating Machinery |
| Pages | 171-184 |
| Number of pages | 14 |
| Publication status | Published - 2008 |
| Event | 9th International Conference on Vibrations in Rotating Machinery - Exeter, United Kingdom (UK) Duration: 8 Sept 2008 → 10 Sept 2008 |
Abstract
This paper presents a procedure for the unidirectional coupled aerodynamic and structural mechanic analysis of a turbine blading by the use of modern commercial Computational Fluid Dynamics (CFD) and Finite Element Method (FEM) software. For that purpose, numerical as well as experimental investigations are carried out, based on the blading of the model air turbine test rig installed at the Institute of Turbomachinery and Fluid Dynamics (TFD) of the Leibniz Universitaet Hannover. An experimental and numerical modal analysis of the 2nd moving blade row blading is used as a starting point for the subsequent numerical investigations. Once the critical operating points are identified using the results of the modal analysis in terms of a computed Campbell diagram, flow calculations at the corresponding operation points are conducted and compared to design point data. As a result of the flow calculations, the circumferential alteration of the total pressure in the wake of the 2nd1 standing blade row is analyzed in order to obtain the dynamic loads needed in a forced response analysis. In the next step, the blades static surface pressure distribution known from the CFD calculations is transferred to the FE model. To model the dynamic loads acting on the blades of the 2nd moving blade row, the static pressure field is scaled by the normalized total pressure alteration amplitude, also called the stimulus, determined by a harmonic analysis of the data obtained form the flow calculations. Afterwards, a frequency response analysis is conducted to determine forced vibrations of the blading.
ASJC Scopus subject areas
- Engineering(all)
- Mechanical Engineering
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Ninth International Conference on Vibrations in Rotating Machinery. 2008. p. 171-184.
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Unidirectional coupled aerodynamic and structural mechanic analysis of a turbine blading
AU - Henke, Michael
AU - Guendogdu, Y.
AU - Seume, J.
AU - Siewert, C.
AU - Panning, L.
AU - Wallaschek, J.
PY - 2008
Y1 - 2008
N2 - This paper presents a procedure for the unidirectional coupled aerodynamic and structural mechanic analysis of a turbine blading by the use of modern commercial Computational Fluid Dynamics (CFD) and Finite Element Method (FEM) software. For that purpose, numerical as well as experimental investigations are carried out, based on the blading of the model air turbine test rig installed at the Institute of Turbomachinery and Fluid Dynamics (TFD) of the Leibniz Universitaet Hannover. An experimental and numerical modal analysis of the 2nd moving blade row blading is used as a starting point for the subsequent numerical investigations. Once the critical operating points are identified using the results of the modal analysis in terms of a computed Campbell diagram, flow calculations at the corresponding operation points are conducted and compared to design point data. As a result of the flow calculations, the circumferential alteration of the total pressure in the wake of the 2nd1 standing blade row is analyzed in order to obtain the dynamic loads needed in a forced response analysis. In the next step, the blades static surface pressure distribution known from the CFD calculations is transferred to the FE model. To model the dynamic loads acting on the blades of the 2nd moving blade row, the static pressure field is scaled by the normalized total pressure alteration amplitude, also called the stimulus, determined by a harmonic analysis of the data obtained form the flow calculations. Afterwards, a frequency response analysis is conducted to determine forced vibrations of the blading.
AB - This paper presents a procedure for the unidirectional coupled aerodynamic and structural mechanic analysis of a turbine blading by the use of modern commercial Computational Fluid Dynamics (CFD) and Finite Element Method (FEM) software. For that purpose, numerical as well as experimental investigations are carried out, based on the blading of the model air turbine test rig installed at the Institute of Turbomachinery and Fluid Dynamics (TFD) of the Leibniz Universitaet Hannover. An experimental and numerical modal analysis of the 2nd moving blade row blading is used as a starting point for the subsequent numerical investigations. Once the critical operating points are identified using the results of the modal analysis in terms of a computed Campbell diagram, flow calculations at the corresponding operation points are conducted and compared to design point data. As a result of the flow calculations, the circumferential alteration of the total pressure in the wake of the 2nd1 standing blade row is analyzed in order to obtain the dynamic loads needed in a forced response analysis. In the next step, the blades static surface pressure distribution known from the CFD calculations is transferred to the FE model. To model the dynamic loads acting on the blades of the 2nd moving blade row, the static pressure field is scaled by the normalized total pressure alteration amplitude, also called the stimulus, determined by a harmonic analysis of the data obtained form the flow calculations. Afterwards, a frequency response analysis is conducted to determine forced vibrations of the blading.
UR - http://www.scopus.com/inward/record.url?scp=57349100874&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:57349100874
SN - 9781843344582
SP - 171
EP - 184
BT - Ninth International Conference on Vibrations in Rotating Machinery
T2 - 9th International Conference on Vibrations in Rotating Machinery
Y2 - 8 September 2008 through 10 September 2008
ER -