Sökning: "Vortex rope"

Hittade 2 uppsatser innehållade orden Vortex rope.

1. 1. Techniques to inject pulsating momentum

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Strömningslära och experimentell mekanik

   Författare :Jelle Kranenbarg; [2020]
   Nyckelord :Hydro power; Rotating Vortex Rope; Flow control; Fluidic actuator; Synthetic jet actuator; Piston actuator; CFD;

   Sammanfattning : Hydro power plants are an essential part of the infrastructure in Sweden as they stand for a large amount of the produced electricity and are used to regulate supply and demand on the electricity grid. Other renewable energy sources, such as wind and solar power, have become more popular as they contribute to a fossil free society. LÄS MER

3. 2. Expanding operation ranges using active flow control in Francis turbines

   M1-uppsats, Umeå universitet/Institutionen för tillämpad fysik och elektronik

   Författare :Sebastian Adolfsson; [2014]
   Nyckelord :Hydropower; flow control; rheingans; vortex rope; air injection; water injection; draft tube; pressure surge;

   Sammanfattning : This report contains an investigation of fluid injection techniques used in the purpose of reducing deleterious flow effects occurring in the draft tube of Francis turbines when operating outside nominal load. There is a focus on implement ability at Jämtkrafts hydroelectric power plants and two power plants were investigated, located in series with each other named Lövhöjden and Ålviken. LÄS MER