Search for dissertations about: "bend pipe"
Showing result 1 - 5 of 10 swedish dissertations containing the words bend pipe.
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1. Experimental study of turbulent flows through pipe bends
Abstract : This thesis deals with turbulent flows in 90 degree curved pipes of circular cross-section. The flow cases investigated experimentally are turbulent flow with and without an additional motion, swirling or pulsating, superposed on the primary flow. READ MORE
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2. Studies of sound generation and propagation in flow ducts
Abstract : This thesis contains three papers investigating problems of interest for noise control in ducts. The first part of this thesis treats the sound propagation in rectangular ducts with flexible walls. Various experimental techniques are performed to measure the internal sound propagation and radiation to the surrounding. READ MORE
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3. 1D engine simulation of a turbocharged SI engine with CFD computation on components
Abstract : Techniques that can increase the SI- engine efficiency while keeping the emissions very low is to reduce the engine displacement volume combined with a charging system. Advanced systems are needed for an effective boosting of the engine and today 1D engine simulation tools are often used for their optimization. READ MORE
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4. Numerical computations of the unsteady flow in a radial turbine
Abstract : Non-pulsatile and pulsatile flow in bent pipes and radial turbine has been assessed with numerical simulations. The flow field in a single bent pipe has been computed with different turbulence modelling approaches. READ MORE
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5. Vortices in turbulent curved pipe flow-rocking, rolling and pulsating motions
Abstract : This thesis is motivated by the necessity to understand the flow structure of turbulent flows in bends encountered in many technical applications such as heat exchangers, nuclear reactors and internal combustion engines. Flows in bends are characterised by strong secondary motions in terms of counter-rotating vortices (Dean cells) set up by a centrifugal instability. READ MORE