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A harmonic balance method for nonlinear fluid structure interaction problems
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DOI：10.1016/j.compstruc.2018.02.003.png)
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Abstract
En 中文
Over the past decade the Harmonic-Balance technique has been established as a viable alternative to direct time integration methods to predict periodic aeroelastic instabilities. This article reports the progress made in using a frequency updating procedure, based on a coupled fluid-structural solver using the Harmonic-Balance formulation. In particular, this paper presents an efficient implicit time-integrator that accelerates the convergence of the structural equations of motion to the final solution. To demonstrate the proposed approached, the paper includes a detailed investigation of the impact of input parameters and exercises the method for two types of fluid-structural nonlinear instabilities: transonic limit-cycle oscillations and vortex-induced vibrations. (C) 2018 The Authors. Published by Elsevier Ltd.
Keywords:
Limit cycle oscillations
Vortex-induced vibrations
Aeroelasticity
CFD
Harmonic balance
Nonlinear
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