Shape sensitivity analysis of flutter characteristics of a low aspect ratio supersonic wing using analytical method

Yang, Chao; Yang, Yong; Wu, Zhigang

doi:10.1007/s11431-012-4933-3

Cited by 2 publications

(3 citation statements)

References 11 publications

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“…The cross-section of a wing is characterized by many parameters describing not only the size of the profile (the skin thickness, spar or rib sectional area) but also the shape of the profile (rectangular, parabolic), rib/spar locations, and the total number of spars/ribs-see References [197][198][199][200][201]. The fundamental aim of the analysis is to design the thickness distribution satisfying the criterion (16) (the minimum weight of a structure).…”

Section: Cross-section Parameters-variable (Stepped) Thicknessmentioning

confidence: 99%

Optimal Design of Plated/Shell Structures under Flutter Constraints—A Literature Review

2019

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Aeroelastic optimization has become an indispensable component in the evaluation of divergence and flutter characteristics for plated/shell structures. The present paper intends to review the fundamental trends and dominant approaches in the optimal design of engineering constructions. A special attention is focused on the formulation of objective functions/functional and the definition of physical (material) variables, particularly in view of composite materials understood in the broader sense as not only multilayered laminates but also as sandwich structures, nanocomposites, functionally graded materials, and materials with piezoelectric actuators/sensors. Moreover, various original aspects of optimization problems of composite structures are demonstrated, discussed, and reviewed in depth.

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Section: Cross-section Parameters-variable (Stepped) Thicknessmentioning

confidence: 99%

Optimal Design of Plated/Shell Structures under Flutter Constraints—A Literature Review

2019

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“…However, methods that can resolve all speeds accurately and efficiently are in high demands because many zones of different speeds will appear in practical configurations' computations [2]. For example, when we simulate an aircraft at a hypersonic speed, the flow will slow down by the strong viscosity near the wall and low speeds' zones will appear.…”

Section: Introductionmentioning

confidence: 99%

“…For these purposes, a method that can simulate compressible flows accurately should satisfy demands of the low speeds. Till date, extensive numerical tests, including our previous work [3], have indicated that the famous compressible computational methods, such as upwind schemes (flux functions) widely used today, are of no help to the low speeds' simulations [2,4]. They seem to provide excessive numerical dissipation in continuous regions because they are designed to have optimal numerical dissipation in discontinuities.…”

Section: Introductionmentioning

confidence: 99%

A parameter-free upwind scheme for all speeds’ simulations

Yan

Sun

et al. 2015

Sci. China Technol. Sci.

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With the rapid development of the computational fluid dynamics (CFD), a parameter-free upwind scheme capable of simulating all speeds accurately and efficiently is in high demand. To achieve this goal, we present a new upwind scheme called AUSMPWM in this paper. This scheme computes the numerical mass flux as the AUSMPW+ and computes the interfacial sound speed in a different way. Also, it computes the pressure flux by limiting the dissipation if the Mach number is less than 1. Series of numerical experiments show that AUSMPWM can satisfy the following attractive properties independent of any tuning coefficient: (1) Robustness against the shock anomaly and high discontinuity's resolution; (2) high accuracy on hypersonic heating prediction and capability to give smooth reproductions of heating profiles; (3) low dissipation at low speeds; and (4) strong grid, reconstruction scheme, and Mach number independence in low speeds' simulations. These properties suggest that AUSMPWM is promising to be widely used to accurately and efficiently simulate flows of all speeds. shock anomaly, AUSMPW+, ausmpwm, all speeds, computational fluid dynamics Citation: Qu F, Yan C, Sun D, et al. A parameter-free upwind scheme for all speeds' simulations. Sci China Tech Sci,

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Shape sensitivity analysis of flutter characteristics of a low aspect ratio supersonic wing using analytical method

Cited by 2 publications

References 11 publications

Optimal Design of Plated/Shell Structures under Flutter Constraints—A Literature Review

Optimal Design of Plated/Shell Structures under Flutter Constraints—A Literature Review

A parameter-free upwind scheme for all speeds’ simulations

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