Aeroelastic and Aerothermoelastic Behavior in Hypersonic Flow
Citations
257 citations
Cites background or methods from "Aeroelastic and Aerothermoelastic B..."
...42 Aerothermoelastic flutter margin of the modified low-aspect-ratio wing along a representative hypersonic trajectory [70]....
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...ACATEmethodology that incorporated the heat transfer between the fluid and the structure using CFD-based aerodynamic heating computations was described in [70]....
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...In a similar approach to [70], Gupta et al....
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...36 Flutter envelope of the low-aspect-ratio wing, calculated using third-order PT, Euler, and NS aerodynamics [70]....
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...For both configurations, higher grid resolution near the surface was required at high Mach numbers due to the reduced thickness of the shock layer [70,180]....
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224 citations
111 citations
Cites background or methods from "Aeroelastic and Aerothermoelastic B..."
...The NASA Langley CFL3D code [46,47], used previously by the authors [34,42,48] to conduct studies on the hypersonic aeroelastic behavior of generic reusable launch vehicles and lifting surfaces, is also used in this study for CFD-based aeroelastic analysis....
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...At the other end of the spectrum, advances in computing capabilities have enabled the use of computational fluid dynamics (CFD) modeling of unsteady aerodynamics in hypersonic aeroelastic studies [34,35]....
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...This apparent thickness influences both the surface pressure distribution and the vehicle aeroelastic stability [31,32,34]....
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...However, such approaches remain impractical for detailed aerothermoelastic analysis over an extended trajectory [34,36,37]....
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...This grid configuration and density was selected based on a mesh refinement study in [34] that demonstrated convergence of lift and moment coefficients to within 5%and average y values for thefirst grid point off the surface to less than 2....
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99 citations
Cites background or methods from "Aeroelastic and Aerothermoelastic B..."
...Recent research on aerothermoelastic stability of a HSV control surface used computational fluid dynamics (CFD) to compute the aerodynamic heating alongwith finite element thermal and structural models to assess its behavior in hypersonic flow [17]....
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...Note that cells are clustered near the surface, leading edge, and midchord, since these locations correspond to maximum flow gradients [17]....
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...While [17] reduced the order of the equations of motion by applying a truncated set of free vibration mode shapes, an eigenvalue solution was still computed at each desired point in time to update themode shapes....
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91 citations
References
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"Aeroelastic and Aerothermoelastic B..." refers methods in this paper
...Therefore, several different approaches have emerged as alternatives to partial regridding in transient aeroelastic computations, among them being dynamic meshes [39], the space–time formulation [40–42], the arbitrary/mixed Eulerian–Lagrangian formulation [43,44], the multiple-field formulation [45,46], the transpiration method [7,47], the exponential-decay/transfinite-interpolation (TFI) method [48,49], the modified spring analogy [33], and the finite macroelement method [49,50]....
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909 citations
"Aeroelastic and Aerothermoelastic B..." refers methods in this paper
...Intervening mesh points on block faces are updated using TFI, a scheme [51] that efficiently maps grid displacements from one block face to another using polynomial functions....
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833 citations
783 citations
"Aeroelastic and Aerothermoelastic B..." refers methods in this paper
...Therefore, several different approaches have emerged as alternatives to partial regridding in transient aeroelastic computations, among them being dynamic meshes [39], the space–time formulation [40–42], the arbitrary/mixed Eulerian–Lagrangian formulation [43,44], the multiple-field formulation [45,46], the transpiration method [7,47], the exponential-decay/transfinite-interpolation (TFI) method [48,49], the modified spring analogy [33], and the finite macroelement method [49,50]....
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...This scheme is a modification of the spring analogy [39] by using axial spring stiffness....
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