Computational Scheme Of Aerodynamic-Acoustic-Structure Coupling For Acoustic Effects On Aeroelastic Structures

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dc.contributor.authorYu, Kok Hwa
dc.date.accessioned2016-11-24T01:43:05Z
dc.date.available2016-11-24T01:43:05Z
dc.date.issued2011-07
dc.description.abstractThis thesis presents a development of a computational scheme involving aerodynamicacoustic- structure coupling in studying the acoustic effects on aeroelastic structure. For this particular problem, it involved multi-disciplinary interaction between aerodynamics, acoustics and structural dynamics in solving the acousto-aeroelastic problem. The first step is to model the wing structural using Finite Element Method (FEM) and tested for the free vibration analysis. In the aerodynamic part, a comprehensive consideration is devoted on aerodynamic basis in developing the aerodynamic model forĀ· unsteady subsonic flow using two- and three-dimensional unsteady panel method. For validation, the present method is compared with commercial software like FLUENT and other researchers' work using predominant techniques such as the Doublet Lattice Method (DLM) formulation obtained from Blair (1992). Using the pressure distribution generated by unsteady panel method, the unsteady pressure coefficient is then converted into frequency domain before assembled in the aeroelastic equation. The solution for aeroelastic problem is eventually obtained using k-method. In the last part, the acoustic modeling is carried out using Boundary Element Method (BEM). Utilizing the BEM formulation, the acoustic pressures are obtainect on the structure surface. Subsequently, combining the aerodynamic and acoustic loadings, the developed acousto-aeroelastic equation is formed and the outcomes are demonstrated on typical wing structures. Two standard wing models were used in this study and they are rectangular and AGARD 445.6 wing models. Using the described computational approach, MATLAB software is utilized in order to model and analyze the problem for this entire research. Thus, this study is centered on computational results and no experimental outcomes will be involved.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/3176
dc.subjectMulti-disciplinary interaction between aerodynamics, acoustics and structural dynamicsen_US
dc.subjectin solving the acousto-aeroelastic problem.en_US
dc.titleComputational Scheme Of Aerodynamic-Acoustic-Structure Coupling For Acoustic Effects On Aeroelastic Structuresen_US
dc.typeThesisen_US
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