Search for dissertations about: "thesis topics in fluid engineering"

Showing result 1 - 5 of 31 swedish dissertations containing the words thesis topics in fluid engineering.

  2. 1. Numerical Investigation of Some Heat Transfer Topics with Relevance to Gas Turbines

    Author : Arash Saidi; Värmeöverföring; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vakuumteknik; Maskinteknik; vacuum technology; vibration and acoustic engineering; hydraulics; Mechanical engineering; plasma; fluiddynamik; Gaser; Ribbed ducts; intercoolers; EASM; EVM; gas turbine; CFD; heat exchangers; extended surfaces; offset strip fin; heat transfer enhancement; Thermal engineering; applied thermodynamics; Termisk teknik; hydraulik; termodynamik; Gases; plasmas; fluid dynamics; vibrationer; akustik;

    Abstract : The first part of the investigation is related to the heat transfer and fluid flow problem inside ribbed ducts with a square cross section. The typical applications of this problem are in the cooling of gas turbine blades and guiding vanes. The second part is related to application of intercoolers in gas turbine systems. READ MORE

  4. 2. On Electrified Fluid Power Systems in Mobile Machinery

    Author : Samuel Kärnell; Liselott Ericson; Petter Krus; Rudolf Scheidl; Linköpings universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fluid power; Electrification; Variable displacement; Pump-controlled systems;

    Abstract : High power density in combination with flexible power distribution possibilities and extreme robustness are reasons why fluid power has been the preferred technology in mobile machinery, such as excavators and cranes, since the mid-20th century. In principle, the machines have been powered by a combustion engine which powers a pump, with the output from the pump being distributed to different functions via valves. READ MORE

  5. 3. Modelling strategies for thin imperfect interfaces and layers

    Author : Mathieu Gaborit; Peter Göransson; Olivier Dazel; Lucie Rouleau; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; uncertainties; thin layers; numerical methods; simplified models; poroelastic materials; incertitudes; couches fines; méthodes numeriques; modèles simplifiés; matériaux poroélastiques; osäkerheter; tunna lager; numeriska metoder; förenklade modeller; poroelastiska medier; Engineering Mechanics; Teknisk mekanik;

    Abstract : The global trend towards quieter environments has been one of the key topics of acoustics research for years. The recent tightening of the regulations on noise exposure as well as the many reports on the impact of noise on human health confirm this situation and stress ever more the need for innovative mitigation strategies. READ MORE

  6. 4. Entrained flow studies on biomass fuel powder conversion and ash formation

    Author : Per Holmgren; Markus Broström; Kentaro Umeki; Rainer Backman; Kevin Whitty; Umeå universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; Thermochemical biomass conversion; particle image velocimetry; gasification; entrained flow reactor; ash transformation; equilibrium calculations; slag formation;

    Abstract : Reducing the global dependence on fossil fuels is of paramount importance in tackling the environmental challenges we face, not only tomorrow, but already today. Biomass offers a renewable supply of CO2-neutral raw material that can be converted into many different forms of fuels and valuable chemicals, making it a prime candidate for the technologies of tomorrow. READ MORE

  7. 5. Innovative noise control in ducts

    Author : Maaz Farooqui; Mats Åbom; Hans Bodén; Tamer Elnady; Jeong-Guon Ih; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Locally resonant materials; slow sound; acoustic impedance; metallic foam; low frequency noise; mufflers; lined ducts; grazing flow; flow duct; impedance eduction.; Vehicle and Maritime Engineering; Farkostteknik;

    Abstract : The objective of this doctoral thesis is to study three different innovative noise control techniques in ducts namely: acoustic metamaterials, porous absorbers and microperforates. There has been a lot of research done on all these three topics in the context of duct acoustics. READ MORE