Welcome to Open Science
Contact Us
Home Books Journals Submission Open Science Join Us News
Effects of Kind of Fluid on the Flutter Speed of Turbine Blades
Current Issue
Volume 3, 2016
Issue 2 (March)
Pages: 11-21   |   Vol. 3, No. 2, March 2016   |   Follow on         
Paper in PDF Downloads: 43   Since Jun. 24, 2016 Views: 1342   Since Jun. 24, 2016
Mohammad Amin Rashidifar, Department of Mechanical Engineering, Islamic Azad University, Shadegan Branch, Shadegan, Iran.
Ali Amin Rashidifar, Department of Electrical and Computer Science, Islamic Azad University, Shadegan Branch, Shadegan, Iran.
Abdullah Abertavi, Department of Electrical and Computer Science, Islamic Azad University, Shadegan Branch, Shadegan, Iran.
In this research paper, a row of blades which consist of a tuned disk and certain number of blades and will be examined. Curved blades that cross a series of free moments of inertia due to bending by cantilevered beams are modeled. Regarding that the disk being tuned, the whole structural and fluid system analysis is focused on a blade and the current around it. Aerodynamic forces during stable and unstable motion in several steps are calculated using ANSYS/ FLOTRAN CFD software and then the real and unreal forces fluid are obtained. On the other hand, the equation of motion in Timoshenko beam is obtained and to determine the system natural frequencies and modes, outside forces are zero and modal analysis while the bending and torsion movements of exposure mode have been done is carried out. By using semi inertia and semi damping and semi elastic of fluid’s elements in inertia and damping and stiffness matrix we can have an eigenvalue equation that solved by using state space method. In this case we can obtain flutter speed of turbine. Then comparison between steam and gas effect as flow on flutter speed were studied.
Blade, Aerodynamics, Flutter, ANSYS CFD, Timoshenko Beam
ANSYS Inc (2004). Release 11.0 Documentation for ANSYS.
Baldelli DH, Lind RC, Brenner M (2005). Robust Aeroelastic Match-Point Solutions Using Describing Function Method. J. Aircraft. 42(6).
Beer FP, Johnstone ERJ (1985), Mechanics of Materials. 2nd ed., McGRAW-HIL Book Company, pp 274-281.
Boyce MP (2001), Gas Turbine Engineering Handbook, Gulf Professional Publishing, Houston, Texas
Campobas MS (2004). Effects of Flow Instabilities on the Linear Harmonic Analysis of Unsteady Flow in Turbomachinery, PhD dissertation. University of Oxford, Oxford, England.
Doi H, Alonso JJ (2002). Fluid/Structure Coupled Aeroelastic Computations for Transonic Flows in Turbomachinery, Proceedings of ASME Turbo Expo held at Amsterdam, The Netherlands, GT-30313.
Feistauer M (2007). Finite Volume and Finite Element Methods in CFD (Numerical Simulation of Compressible Flow), Faculty of Mathematics and Physics, Charles University Prague.
Fransson TH, Verdon JM (1992). Updated report on Standard Configuration for Unsteady Flow Through Vibrating Axial-Flow Turbomachine-Cascades, Standard Configurations, 6/21/01.
Han JH, Han JH, Tani J, Qiu J (2006). Active Flutter Suppression of a Lifting Surface Using Piezoelectric Actuation and Modern Control Theory. J. Sound Vib. 291(3/5): 706-722.
Han SM, Benaroya H, Wei T (1999). Dynamics of Transversely Vibrating Beams Using Four Engineering Theories. J. Sound Vib. 225(5): 935-988.
Hodges DH, Pierce GA (2002). Introduction to Structural Dynamics and Aeroelasticity, Cambrides University Press.
Karadal FM, Seber G, Sahin M, Nalbantoglu V, Yaman Y (2007). State Space Representation of Smart Structures under Unsteady Aerodynamic Loading, Ankara International Aerospace Conference held at Ankara, Turkey, AIAC-2007-034.
Lawrence C, Spyropoulos E, Reddy TSR (2000). Unsteady Cascade Aerodynamic Response Using a Multiphysics Simulation Code, NASA/TM-209635.
Lind R (2002). Match-Point Solutions for Robust Flutter Analysis. J. Aircraft. 39(1): 91-99.
Liu F, Cai J, Zhu, Tsai HM, Wong ASF (2001). Calculation of Wing Flutter by a Coupled Fluid-Structure Method. J. Aircraft. 38(2): 332-4.
Pototzky AS (2008). Modeling State-Space Aeroelastic Systems Using a Simple Matrix Polynomial Approach for the Unsteady Aerodynamics, NASA Langley Research Center, Aeroelasticity Branch, RTO-AVT-154.
Poursaeidi E, Aieneravaie M, Mohammadi MR (2008). Failure analysis of a second stage blade in a gas turbine engine. J. Eng. Failure Analysis. 15: pp 1111–1129.
Reddy TSR, Srivestava R, and Mehmed O (2002). STROP2-LE: A Mistuned Aeroelastic Analysis System Based on a Two Dimensional Linearized Euler Solver, NASA Glenn Research Center, Technical Support Package for Analyzing Aeroelasticity in Turbomachinery, NASA Tech Briefs, LEW-17477-1, NASA/TM-211499.
Reddy TSR, Srivestava R, Mehmed O (1999). Flutter and Force Response Analyses of Cascades Using Two-Dimensional Linearized Euler Solver, NASA Glenn Research Center, NASA/TM-1999-209633.
Reddy TSR, Bakhle MA, Trudell JJ, Mehmed O, Stefko GL (2004). LINFLUX-AE: A Turbomachinery Aeroelastic Code Based on a 3–D Linearized Euler Solver, NASA/TM-212978.
Sadeghi M, Liu F (2005). Coupled Fluid-Structure Simulation for Turbomachinery Blade Rows, 43rd AIAA Aerospace Sciences Meeting and Exhibit held at Reno, NV, AIAA 2005-0018.
Sadeghi M, Lui F (2005). Computation of Cascade Flutter by Uncoupled and Coupled Methods, Int. J. Computational Fluid Dynamics. 19(8): pp 559-569.
Sadeghi M, Lui F(2005). Computation of Cascade Flutter by Uncoupled and Coupled Methods, Int. J. Computational Fluid Dynamics. 19(8): pp 559-569.
Simsek M, Kocaturk T (2007). Free vibration analysis of beams by using a third-order shear deformation theory, Sadhana (Printed in India). 32(3): pp 167–179.
Thomson WT(1988). Theory of Vibration with Applications, 3rd ed., Prentice Hall, Englewood Cliffs, New Jersey 07632.
Willcox KE (2000). Reduecd-Order aerodynamic Models for aeroelastic Control of Turbomachines, PhD dissertation, Massachusetts Inst. Tech., Cambridge, Massachusetts, USA.
Open Science Scholarly Journals
Open Science is a peer-reviewed platform, the journals of which cover a wide range of academic disciplines and serve the world's research and scholarly communities. Upon acceptance, Open Science Journals will be immediately and permanently free for everyone to read and download.
Office Address:
228 Park Ave., S#45956, New York, NY 10003
Phone: +(001)(347)535 0661
Copyright © 2013-, Open Science Publishers - All Rights Reserved