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Analysis of the dynamic response of pump-turbine runners. Part I: Experiment
dc.contributor.author | Presas Batlló, Alexandre |
dc.contributor.author | Valero Ferrando, Ma. del Carmen |
dc.contributor.author | Huang, Xingxing |
dc.contributor.author | Egusquiza Estévez, Eduard |
dc.contributor.author | Farhat, Mohamed |
dc.contributor.author | Avellan, François |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Mecànica de Fluids |
dc.date.accessioned | 2013-04-17T12:02:49Z |
dc.date.created | 2012 |
dc.date.issued | 2012 |
dc.identifier.citation | Presas, A. [et al.]. Analysis of the dynamic response of pump-turbine runners. Part I: Experiment. A: IAHR Symposium on Hydraulic Machinery and Systems. "IOP Conference Series: Earth and Environmental Science". Beijing: IOPScience, 2012, p. 1-9. |
dc.identifier.uri | http://hdl.handle.net/2117/18852 |
dc.description.abstract | When in operation, pump-turbine runners have to withstand large pressure pulsations generated by the rotor-stator interaction. The analysis of the dynamic behavior of these structures is necessary to avoid damage. For this analysis a realistic model of the runner is necessary. When the runner is submerged in water and inside the casing, its dynamic response is greatly affected. The added mass effects of the surrounding fluid and the proximity of the head-cover and bottom-cover may reduce the natural frequencies. The frequency reduction produced by the added mass effects and the influence of the boundary conditions has to be known for a safe design of the runner. In this paper an experimental investigation on the dynamic response of a model runner is presented. A reduced scale model of a pump-turbine was tested outside and inside the casing with different boundary conditions. For the excitation of the runner at different frequencies piezoelectric patches were used. The response was measured with miniature accelerometers located in several positions inside the runner. From the measurements the natural frequencies and mode-shapes of the runner were calculated using EMA. The influence of the added mass and of the boundary conditions is presented and discussed. |
dc.format.extent | 9 p. |
dc.language.iso | eng |
dc.publisher | IOPScience |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids |
dc.subject | Àrees temàtiques de la UPC::Enginyeria mecànica |
dc.subject.lcsh | Turbine pumps |
dc.title | Analysis of the dynamic response of pump-turbine runners. Part I: Experiment |
dc.type | Conference lecture |
dc.subject.lemac | Turbines hidràuliques |
dc.contributor.group | Universitat Politècnica de Catalunya. FLUIDS - Enginyeria de Fluids |
dc.identifier.doi | 10.1088/1755-1315/15/5/052015 |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 11858025 |
dc.description.version | Postprint (published version) |
dc.date.lift | 10000-01-01 |
local.citation.author | Presas, A.; Valero, M.; Huang, X.; Egusquiza, E.; Farhat, M.; Avellan, F. |
local.citation.contributor | IAHR Symposium on Hydraulic Machinery and Systems |
local.citation.pubplace | Beijing |
local.citation.publicationName | IOP Conference Series: Earth and Environmental Science |
local.citation.startingPage | 1 |
local.citation.endingPage | 9 |