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Browsing Engineering by Subject "Aeroelasticity"

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    NUMERICAL SIMULATION OF HYPERSONIC FLUID-STRUCTURE INTERACTION ON CANTILEVER PLATE WITH OSCILLATING SHOCK IMPINGEMENT
    (I.O.E, 2024-03) Paudel, Prabin; Shahi, Sanskar Chandra; Pandey, Sarthak; Kharel, Sashakta; Bhattarai, Sudip
    When an entity surpasses the velocity of sound, it undergoes a process where it compresses the air molecules preceding it, resulting in the formation of a region characterized by heightened pressure called a shock wave. When this shock wave encounters a physical framework, the framework becomes exposed to a load of pressure, potentially leading to structural deformation. These scenarios, wherein the interaction between a fluid medium and structures is involved, are effectively tackled through the discipline of fluid-structure interaction (FSI). In the case of hypersonic vehicles, shock waves impact the structures of control surfaces, thereby instigating fluid-structure interaction within said structures. The scope of this study is to carry out a numerical simulation of Hypersonic Fluid-Structure Interaction on a Cantilever plate with oscillating shock impingement location using the UNSW Canberra’s HyMAX benchmark test case. The numerical simulation is carried out in two approaches i.e. Low Fidelity Modeling (LFM) and High Fidelity Modeling (HFM). In LFM, the problem is modeled based on shockwave Expansion Theory , Piston Theory and Euler Bernoulli Model. Whereas in HFM, the problem is solved by coupling a fluid solver, OpenFOAM, with a structural solver, CalculiX, via a coupling library, preCICE. The shock-generating wedge was given a predefined oscillating rotating motion with a frequency of 42 Hz.