Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"turbulence simulation"”.
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Bidirectional adaptive optics architectures for optical communication through atmospheric turbulence
… the deleterious effects of clear-weather turbulence, namely beam spread, beam wander, angle-of-arrival spread, and scintillation, which leads to low end-to-end power transfer from the transmitter to receiver. Decreases in the power transfer result in lower communication rates and may …
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Crackle noise from high-speed free-shear-flow turbulence
… noise is lacking, and in particular, the root turbulence mechanisms that give rise to the skewed acoustic signal are unknown. Direct numerical simulations (DNS) of high-speed free-shear-flow turbulence are used to assess the underlying mechanisms and quantify near-field nonlinearity as …
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Large Eddy Simulations of complex turbulent flows
… is developed using a combination of Large Eddy Simulation (LES) and Immersed Boundary Method (IBM) concepts. LES is an intermediate approach to turbulence simulation in which the onus of modeling of “universal” small scales is appropriately transferred to the resolution of “problem-dependent” …
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Flow regimes in canopy turbulence
… regimes over canopies using direct numerical simulations. The term `canopy' refers to a group of substantial roughness elements protruding into the flow, which generally results in two distinct regions of interest: the near-canopy region, where the flow is directly influenced by the canopy, …
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Characteristics of flame-turbulence interactions in freely propagating turbulent premixed flames under decaying and forced isotropic turbulence conditions
… either forced or decaying background isotropic turbulence to provide detailed insights into the features of flame-turbulence interactions; however, none have made direct comparisons of cases where the turbulence decays or is sustained using a forcing strategy. This study compares the features of …