Search for dissertations about: "isotropic turbulence"
Showing result 1 - 5 of 27 swedish dissertations containing the words isotropic turbulence.
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1. Turbulence modulation effects caused by small droplets using one-dimensional-turbulence
Abstract : This thesis presents a stochastic model to study turbulence modulation effects on gas phases caused by small droplets or more generally speaking particles to achieve a better understanding about the physics and with the aim to provide data for a subgrid-scale (SGS) model for Large-eddy-simulations. The one-dimensional-turbulence (ODT) model addresses one of the major issues for multiphase flow simulations, namely computational costs. READ MORE
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2. An Experimental Study of Reynolds Stress Closures in Shear Free and Weakly Sheared Turbulence
Abstract : The objective of this thesis work is to obtain data enabling evaluation of closure hypotheses used in the Reynolds stress transport (RST) equations. Special attention has been devoted to studies of flow fields with shear free and weakly sheared turbulence. READ MORE
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3. Mean Wind and Turbulence Conditions in the Boundary Layer above Forests
Abstract : As wind turbines have grown, new installation areas become possible. Placing wind turbines in forested landscapes introduce uncertainties to the wind resource estimation. READ MORE
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4. Suspensions of finite-size rigid particles in laminar and turbulent flows
Abstract : Dispersed multiphase flows occur in many biological, engineering and geophysical applications. Understanding the behavior of suspensions is a difficult task. In the present work, we numerically study the behavior of suspensions of finite-size rigid particles in different flows. READ MORE
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5. Towards Improved Scale-Resolving Modeling and Simulations of Turbulent Flows
Abstract : Scale-resolving simulations are viewed as powerful means for predicting complex turbulentflows, as often encountered in aeronautical applications. However, since turbulent scalesspan over a considerable range from the smallest Kolmogorov scales to the largest ofequivalence to configuration size, scale-resolving computations are often demandingon computational resources and, furthermore, on the underlying numerical methodsused in the simulations. READ MORE