Sökning: "one-dimensional flow"

Visar resultat 21 - 25 av 52 uppsatser innehållade orden one-dimensional flow.

1. 21. Thermal Analysis of a Sea Wave Generator

   Master-uppsats, KTH/Elkraftteknik

   Författare :Ezequiel Quijada; [2017]
   Nyckelord :sea wave power generator; magnet overheating; demagnetization; heat transfer; conjugate heat transfer; thermal resistance; Comsol Multiphysics; cooling technique;

   Sammanfattning : Wave power has been increasing the interest of many researchers looking for alternative sustainable energy sources since the reserves have proved to be capable of satisfying a considerable percentage of the world´s energy demands. This option has not been adopted as a sustainable source since there are some challenges in the process of designing a low cost device that converts the kinetic energy of the waves into electric energy and that could still be efficient enough to be competitive against other options. LÄS MER

3. 22. Pressure loss characterization for cooling and secondary air system components in gas turbines

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Frida Isaksson; [2017]
   Nyckelord :Gas turbines; cooling and secondary air system; pressure losses; discharge coefficient; minor loss; one-dimensional modelling;

   Sammanfattning : There is a constant struggle to increase the efficiency in gas turbines, where one method is to have a higher inlet temperature to the turbine. Often, this results in temperatures higher than the critical temperature of the materials, which makes cooling of the components an important part of the turbine. LÄS MER

4. 23. Measurement of Thermal Insulation properties of TBC inside the Combustion chamber

   Uppsats för yrkesexamina på grundnivå, Luleå tekniska universitet/Materialvetenskap

   Författare :Siamak Kianzad; [2017]
   Nyckelord :Materials; TBC; Thermal barrier coating; heat flux; crack; combustion chamber; heavy duty diesel engine; single-cylinder; dummy valve; 8YSZ; YSZ; segmented cracks; radiative heat transfer; lanthanum gadolinium; EB-PVD; PVD; APS; CVD; horizontal cracks; vertical cracks; crack propagation; crack initiation;

   Sammanfattning : This master thesis project was performed in collaboration with Scania CV AB, Engine Materials group. The purpose with the project was to investigate different ceramic TBC (Thermal Barrier Coating) thermal insulation properties inside the combustion chamber. LÄS MER

5. 24. VisCon - Visualisering av tvådimensionell konsolidering i undervisningssammanhang

   Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Byggnadsmekanik; Lunds universitet/Institutionen för byggvetenskaper

   Författare :Karin Forsman; [2017]
   Nyckelord :Technology and Engineering;

   Sammanfattning : When a ground surface is subjected to a load an increased level of stress will occur in the soil underneath. As soil material has a limited permeability, an increased stress will initially result in an excess pore water pressure. However, as time passes the water will flow and the pore water pressure will even out. LÄS MER

7. 25. Understanding Sn-seeded InSb nanowire growth

   Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Fasta tillståndets fysik

   Författare :Hengfang Zhang; [2017]
   Nyckelord :Science General;

   Sammanfattning : III-Sb semiconductor nanowires have drawn a lot of attention because of their many promising applications, such as thermoelectric generation, low power high efficient electronics and quantum transport. Gold as a catalyst seed particle has been dominating for many years assisting nanowires growth. LÄS MER