Search for dissertations about: "Bluff-body"
Showing result 6 - 10 of 26 swedish dissertations containing the word Bluff-body.
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6. Dynamics of Exhaust Valve Flows and Confined Bluff Body Vortex Shedding
Abstract : This thesis can be divided into two interconnected topics; engine exhaust-valve flows and confined bluff-body vortex shedding. When optimising engine flow systems it is common to use low order simulation tools that require empirical inputs, for instance with respect to flow losses across the exhaust valves. READ MORE
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7. Drag Reduction by means of Active Flow Control Applied on a Generic Truck A-pillar: a Numerical and Experimental Study
Abstract : The overall goal of this thesis is to isolate and control the flow mechanism characterizing the flow separation occurring at the A-pillar of a truck. The study aims to gain knowledge of the flow physics of the separation mechanism, and to eventually suppress the afore mentioned separation by means of an Active Flow Control. READ MORE
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8. Unsteady Numerical Simulations of Flow around Heavy Vehicles, Trains and Passenger Cars
Abstract : In this thesis several simulations have been carried out aimed at improving the knowledgeof vehicle aerodynamics and improving the flow around vehicles with respect to theaerodynamic drag. Four flows around different simplified vehicles have been considered. READ MORE
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9. Minimize Vortex Drag of a Passenger Car
Abstract : The aerodynamic drag force is the single biggest resistance force for a passenger car toovercome at highway speeds. Since all driving resistance forces can be directly linked tofuel consumption this has become a significant priority in recent years. READ MORE
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10. Numerical Study of Laminar, Transitional and Turbulent Flow Past Rectangular Cylinders
Abstract : The subject of flow past slender bluff bodies is of relevance to technical problems associated with energy conservation, structural design and acoustic emissions. The present work is restricted to an important sub-class of slender bluff body flow --- the incompressible flow around a stationary cylinder having a rectangular cross section, the cylinder being exposed to a constant free stream velocity. READ MORE