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Showing result 1 - 5 of 9 swedish dissertations matching the above criteria.
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1. CFD Simulations for Film Cooling : Reduced Models at Engine Like Conditions
Abstract : In gas turbines some parts are exposed to combustion gases with temperatures well above the melting temperature of the material. Therefore, various cooling techniques are utilized in order to protect the parts exposed to these hot gases. One such technique, film cooling, is a common and well established way to protect the exposed parts. READ MORE
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2. Numerical Studies of Flow and AssociatedLosses in the Exhaust Port of a Diesel Engine
Abstract : In the last decades, the focus of internal combustion engine development has moved towards more efficient and less pollutant engines. In a Diesel engine, approximately 30-40% of the energy provided by combustion is lost through the exhaust gases. The exhaust gases are hot and therefore rich of energy. READ MORE
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3. Aerothermodynamics and exergy analysis in turbocharger radial turbine
Abstract : Coupling of turbomachine to reciprocating automotive engine in turbocharging leads to complex fluid flow and thermal characteristics in the turbine. Some undesirable characteristics include heat transfer, flow pulsation and secondary flow due to the complex geometry of the upstream exhaust manifold. READ MORE
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4. Flow and heat transfer in a turbocharger radial turbine
Abstract : In the past decades, stricter legislation has been imposed to improve fuel economy and to reduce tail-end emissions of automotive vehicles worldwide. One of the important and effective technologies adopted by the automobile manufacturers to fulfill legislation requirements is the turbocharger technology. READ MORE
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5. Numerical Investigation of Radial Turbines Subject to Pulsating Flow
Abstract : In the optic of a more sustainable society, research and development of highly efficient fluid machines represent a fundamental process to satisfy the rapidly growing energy needs of the modern world. Radial turbines are characterized by higher efficiencies for a larger range of inflow conditions compared to axial turbines. READ MORE