Global ETD Search
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Showing 1 to 7 of 7 for “"Wake effect"”.
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Predicting Interference Patterns Between Offshore Wind Farms through Wake Analysis
This research is to characterize the wake effect from a cluster of large-scale offshore wind turbines with the purpose of optimizing spacing between separate farms to avoid wake interference. Placing wind turbines within a field of disturbed flow decreases power output, and in some cases, threatens …
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Aerodynamics Analysis of Small Horizontal Axis Wind Turbine Blades by Using 2D and 3D CFD Modelling
… non-linear k-ω solver so that the rotational effect can be studied. These three-dimensional models were used for predicting the performance of a small horizontal axis wind turbine. Moreover, the analysis of wake effect and aerodynamic noise can be carried out when the rotational effect was …
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Analytical Unsteady Aerodynamic Models for Horizontal Axis Wind Turbines
… wind tunnel and field test data. The unsteady wake is modeled using vortex methods. The analysis covers unsteady loading due to fast pitch change at constant wind speed, and varying wind speed at constant pitch. The analysis can be extended to more complex conditions. The work starts by …
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Effects of Moisture on Combustion of Live Wildland Forest Fuels
… provided by the lower leaf, creating a wake effect which displaced hot gases from the flat-flame burner as well as entrained surrounding room temperature gas. A semi-physical model based on fluid dynamics and heat and mass transfer was developed that included the observed plateau at …
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Improvements in the numerical modelling of wake effects for wave energy converter farms
… the available numerical methodologies to assess wake effects for WEC farms in order to quantify their impact on the surrounding wave field. Two different methodologies have been developed in order to better represent WECs in wave propagation models (WPMs), the type of model to resolve wave …
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Decomposition-based, complementarity models for renewable energy generation system design optimization
… constraints are introduced so that the nonsmooth wake effect can ultimately be considered in a continuously differentiable optimization formulation; and a decomposed formulation is derived through multi-scenario decomposition. It is shown that the design problem can be effectively solved by a …
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Computations of bubble dynamics with heat transfer
… by displacing liquid, particularly in the wake region behind the bubble. This, in turn, increases heat transfer from the hot surface, by continuously bringing cooler liquid into contact with the hot surface and removing hot liquid from the surface. However, despite its industrial relevance, …