Search for dissertations about: "heat transfer analysis using cfd"
Showing result 21 - 25 of 28 swedish dissertations containing the words heat transfer analysis using cfd.
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21. Variable Valve Actuation in a Spark Ignition Engine - A Flow Field and Heat Release Study
Abstract : The objective of this thesis was to find ways of improving part-load efficiency for a spark ignition engine by studying the effects of variable-valve actuation on fluid flow and combustion. The in-cylinder flow was measured with laser doppler velocimetry, LDV, and particle image velocimetry, PIV. READ MORE
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22. Experimental and analytical study of thermal mixing at reactor conditions
Abstract : High-cycle thermal fatigue due to turbulent mixing of streams at distinct temperatures is an interdisciplinary issue affecting safety and life extension of existing reactors together with the design of new reactors. It is challenging to model damage and thermal loads arising from the above mixing. READ MORE
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23. Sustainable Energy Conversion from Biomass Waste Combustion
Abstract : Various biomass-type conversions into sustainable heat and power, from dedicated crops to solid biomass waste via the combustion process, are at the center of scientific and industrial focus today. However, biomass combustion contribution to global particulate matter (PM) emission has become one of the biggest challenges that remain in the development of sustainable biomass combustion systems. READ MORE
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24. Thermal Design of Electrical Machines - Investigation and Evaluation of Cooling Performances
Abstract : This Thesis focuses on thermal design of permanent magnet synchronous electrical machines (PMSM) used in hybrid vehicles (HEVs) or zero emission vehicles (ZEVs). Electrical machines in such applications are usually designed with high power density requirements but within limited spaces, which lead to high rate of heat generation but low rate of heat dissipation. READ MORE
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25. Model Developments to Study Some Aspects of Improving Efficiencies in EAF Plants
Abstract : The aim of this thesis is to investigate some aspects of improvements with respect to the energy consumption and raw material selection as well as the understanding of the influence of uncertainties on the performance in electric arc furnace (EAF) plants. The effect of electromagnetic stirring on the scrap melting and post combustion capacity are investigated in two EAFs by using computation fluid dynamic (CFD) models. READ MORE