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- W2325942760 abstract "A low-speed wind tunnel is developed for fluid dynamics research at Reykjavik University. The tunnel is intended for conducting research on the flow past micro air vehicles, as well as fundamental research on turbulence. High flow quality is elemental for both research projects. The tunnel is of open suction type and is composed of a square inlet with a honeycomb and turbulence screens, settling chamber, contraction, experimental section housing, diffuser, and axial fan. In this paper, we describe the details of the design optimization procedure of the contraction, which is a key to getting a high quality flow in the experimental section. A high-fidelity computational fluid dynamic (CFD) flow solver is used to capture the nonlinear flow physics. Due to the high computational expense of the CFD simulations, surrogate-based optimization (SBO) is used to accelerate the design process. The SBO approach replaces direct optimization of the high-fidelity (accurate but computationally expensive) model by iterative optimization of a properly corrected lowfidelity model. Here, we exploit variable-resolution CFD simulations, as well as a simple multiplicative response correction technique to construct the surrogate model of the wind tunnel contraction, allowing us to optimize its shape at a low computational cost. To our knowledge, it is the first application of SBO to wind tunnel contraction design. The optimum nozzle design is verified using a high-fidelity CFD simulation." @default.
- W2325942760 created "2016-06-24" @default.
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- W2325942760 date "2012-06-25" @default.
- W2325942760 modified "2023-10-17" @default.
- W2325942760 title "Surrogate-Based Shape Optimization of Low-Speed Wind Tunnel Contractions" @default.
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- W2325942760 doi "https://doi.org/10.2514/6.2012-3344" @default.
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