Unsteady RANS based impulse response studies of AGARD wing for aeroelastic and flutter analysis

Sharanappa, Sajjan V and Padmanabhan, MA and Mandal, S and SenGupta, G and Dutta, PK (2011) Unsteady RANS based impulse response studies of AGARD wing for aeroelastic and flutter analysis. In: Symposium on Applied Aerodynamics and Design of Aerospace Vehicle (SAROD 2011), November 16-18, 2011, Bangalore, India.

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    Abstract

    A study and evaluation of the CFD code IMPRANS developed by CTFD division of NAL is presented for aeroelastic analysis. The transient response of the AGARD 445.6 wing to a step change in the angle of attack is generated using implicit Reynolds averaged Navier-Stokes solver IMPRANS. The frequency domain characteristics of the wing are derived from the CFD data, and validated against the results of DLM method from NASTRAN software. The work highlights a practical method for generating accurate CFD based unsteady aerodynamics data with significantly reduced computational effort as compared to the other excitations.

    Item Type: Conference or Workshop Item (Paper)
    Uncontrolled Keywords: Unsteady CFD, RANS solver, Step input, Impulse response, Aeroelasticity, Flutter
    Subjects: AERONAUTICS > Aerodynamics
    Division/Department: Computational and Theoretical Fluid Dynamics Division, Other, Other, Other, Computational and Theoretical Fluid Dynamics Division
    Depositing User: Smt Bhagya Rekha KA
    Date Deposited: 24 Jan 2012 09:55
    Last Modified: 24 Jan 2012 09:55
    URI: http://nal-ir.nal.res.in/id/eprint/10275

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