Prasad, Chandra Shekhar; Pešek, Luděk Efficient prediction of classical flutter stability of turbomachinery blade using the boundary element type numerical method. (English) Zbl 1464.74067 Eng. Anal. Bound. Elem. 113, 328-345 (2020). Summary: In this paper classical flutter phenomena in power turbine rotor is studied. A medium fidelity 2D flow solver based on boundary element method is developed for this purpose. The classical flutter parameters in turbomachinery cascades such as aerodynamic damping at different inter-blade phase angle are estimated using flutter stability analysis flow solver. The flow solver is developed using 2D unsteady potential flow based panel method. The unsteady aerodynamic loading on the vibrating cascade is estimated using a traveling-wave mode oscillation. The simulated aerodynamic damping and pressure coefficient using boundary element method are compared against both experimental data and the computational fluid dynamics model’s results at different flow conditions. The boundary element based method results demonstrate good agreement with experimental data. The boundary element based flow solver shows significant reduction in computational time compared to computational fluid dynamics model. MSC: 74H45 Vibrations in dynamical problems in solid mechanics 74S15 Boundary element methods applied to problems in solid mechanics 65N38 Boundary element methods for boundary value problems involving PDEs 74H55 Stability of dynamical problems in solid mechanics Keywords:turbomachinery; aeroelasticity; panel method (PM); aerodynamic damping (AD); traveling wave mode (TWM); classical flutter; boundary element method (BEM) PDFBibTeX XMLCite \textit{C. S. Prasad} and \textit{L. Pešek}, Eng. Anal. Bound. Elem. 113, 328--345 (2020; Zbl 1464.74067) Full Text: DOI References: [1] Atassi, H.; Akai, T., Effect of blade loading and thickness on the aerodynamics of oscillating cascades, 16th aerospace sciences meeting, 277 (1978) [2] Panovsky, J.; Kielb, R., A design method to prevent low pressure turbine blade flutter, J Eng Gas Turbine Power, 122, 1, 89-98 (2000) [3] Fransson T. Udine: lecture notes/introduction to blade flutter in axial flow turbomachinery. 1993. [4] Hess, J. L., Calculation of potential flow about arbitrary three-dimensional lifting bodies, Final Technical Report MDC J5679-01 (1972), Naval Air Systems Command, Department of the Navy [5] Prasad, C. S.; Dimitriadis, G., Application of a 3D unsteady surface panel method with flow separation model to horizontal axis wind turbines, J Wind Eng Ind Aerodyn, 166, 74-89 (2017) [6] Prasad, C.; Chen, Q.-Z.; Bruls, O.; D’Ambrosio, F.; Dimitriadis, G., Advanced aeroservoelastic modeling for horizontal axis wind turbines, Proceedings of the 9th international conference on structural dynamics, EURODYN 2014, Porto, Portugal, 3097-3104 (2014) [7] Prasad, C.; Chen, Q.-Z.; Bruls, O.; D’Ambrosio, F.; Dimitriadis, G., Aeroservoelastic simulations for horizontal axis wind turbines, Proc Inst Mech Eng Part A, 231, 2, 103-117 (2017) [8] Katz, J.; Plotkin, A., Low-speed aerodynamics (2001), Cambridge University Press: Cambridge University Press New York, USA · Zbl 0976.76003 [9] McFariand, E., Solution of plane cascade flow using improved surface singularity methods, J Eng Power, 104, 669 (July 1982) [10] Article ID: 312430 [11] Barbarossa, F.; Parry, A. B.; Green, J. S.; di Mare, L., An aerodynamic parameter for low-pressure turbine flutter, J Turbomach, 138, 5, 51001 (2016) [12] Fransson, T., Aeroelasticity in axial flow turbomachines (1999), Von Karman Institute for Fluid Dynamics: Von Karman Institute for Fluid Dynamics Brussels, Belgium [13] Verdon, J. M., Review of unsteady aerodynamic methods for turbomachinery aeroelastic and aeroacoustic applications, AIAA J, 31, 2, 235-250 (1993) · Zbl 0776.76003 [14] V07BT36A022-V07BT36A022 [15] Camara E. Validation of time domain flutter predictiontool with experimental results. 2015. [16] Carta, F. O., An Experimental Investigation of Gapwise Periodicity and Unsteady Aerodynamic Response in an Oscillating Cascade I -Experimental and Theoretical Results, Tech. Rep (1982), NASA [17] McCroskey, W. J.; McAlister, K.; Carr, L.; Pucci, S.; Lambert, O.; Indergrand, R., Dynamic stall on advanced airfoil sections, J Am Helicopter Soc, 26, 3, 40-50 (1981) [18] Hansen, Y. C., An introduction to the theory of aeroelasticity (2008), Dover Publication Inc: Dover Publication Inc Mineola, New York · Zbl 1156.74001 [19] Vogt, D., Experimental Investigation of Three-Dimensional Mechanisms in Low-Pressure Turbine Flutter (2005), Ph.D. Thesis [20] Vimmr, J.; Bublík, O.; Pecka, A.; Pešek, L.; Procházka, P., Numerical and experimental study of fluid flow in simplified blade cascade with prescribed harmonic motion, EPJ web of conferences, 180, 02116 (2018), EDP Sciences This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. In some cases that data have been complemented/enhanced by data from zbMATH Open. This attempts to reflect the references listed in the original paper as accurately as possible without claiming completeness or a perfect matching.