Accession Number : ADA141905

Title :   Aeroelasticity in Turbomachine-Cascades.

Descriptive Note : Final scientific rept. 15 Dec 82-15 Dec 83,

Corporate Author : ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND) LAB DE THERMIQUE APPLIQUEE

Personal Author(s) : Boelcs,A ; Fransson,T ; Suter,P

PDF Url : ADA141905

Report Date : 01 Feb 1984

Pagination or Media Count : 25

Abstract : The aeroelastician needs reliable efficient methods for calculation of unsteady blade forces in turbomachines. The validity of such theoretical (or empirical) prediction models can only be established if researchers apply their flutter and forced vibration predictions to a number of well documented experimental test cases. Under the present project, a report with nine selected standard configurations for the mutual validity of experimental and theoretical results has been prepared and distributed. Together with the standard configurations, unified nomenclature and reporting formats, to be used in the present work, have been defined. Presently, 'blind tests' predictions are performed at several research institutes, whereafter the experimental and theoretical aeroelastic results will be compiled and analyzed during the third (final) year of the project. The potential for a very positive result from the joint research work has become increasingly larger, as many more institutions than orginally previewed are interested in the establishment of the validity of existing and future theoretical models for flutter. As part of the project, two experimental research programs have been initiated in fields where no data could be found in the open literature. (Author)

Descriptors :   *Aeroelasticity, *Turbomachinery, *Flutter, *Axial flow turbines, *Experimental data, Configurations, Cascades(Fluid Dynamics), Cascade structures, Two dimensional flow, Three dimensional flow, Unsteady flow, Turbine blades, Predictions, Comparison, Model theory, Switzerland

Subject Categories : Fluid Mechanics
      Mechanics
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE