Sökning: "hydrodynamic load"

Visar resultat 1 - 5 av 12 uppsatser innehållade orden hydrodynamic load.

  1. 1. Lastkapacitet hos murar byggda med C3C blocksystem -översvämningslaster

    Uppsats för yrkesexamina på grundnivå, Linnéuniversitetet/Institutionen för byggteknik (BY)

    Författare :Johan Blomberg; Alfred Sörgårn; [2021]
    Nyckelord :flood; c3c; capacity; concrete; concrete blocks; exceptional loads; eurocode; floating debris; water load; overturning; sliding; friction; översvämning; c3c; kapacitet; betong; betongblock; exceptionella laster; eurokod; drivgods; vattenlast; stjälpning; glidning; friktion;

    Sammanfattning : Floods are the natural disaster that causes the most deaths and economic damage in the world. Sweden has been relatively spared from casualties in connection with floods, but the material damage is significant. In the future, larger and more frequent floods are expected. LÄS MER

  3. 2. SUSTAINABLE LUBRICATION FOR FUTURE TRANSMISSIONS : Micropitting performance of Glycerol-based lubricants

    Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Zapata Tamayo Juan Guillermo; [2021]
    Nyckelord :micropitting; mild sliding wear; surface coating; diamond-like carbon DLC; glycerol-based lubrication; green lubricant; rolling contact fatigue; rolling-sliding;

    Sammanfattning : Achieving sustainable lubrication by using environmentally friendly formulated lubricants has became an essential component of the transition process from fossil-powered vehicles to electrified transportation. Mixtures, or aqueous solutions of molecules such as polyhydroxy alcohols, and glycols usually known as green lubricants make it possible to achieve low friction coefficients under different lubrication conditions, which constitutes a potential alternative to improve the tribological performance of moving parts in automotive systems, at the same time that the environmental requirements are satisfied. LÄS MER

  4. 3. Hardware-In-the-Loop simulation of a small scale prototype of a Wave Energy Converter

    Uppsats för yrkesexamina på avancerad nivå, Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Författare :Anton Magnusson; [2020]
    Nyckelord :Hydrodynamics; Hardware-In-the-Loop; WEC-Sim; Wave Energy Converter; NEMOH; Hydrodynamik; Hardware-In-the-Loop; WEC-Sim; vågenergikonverterare; NEMOH;

    Sammanfattning : Renewable energy sources are a hot topic, both when it comes to climate change and the constant increase in demand of electricity due to population growth and a more electrified society. One such energy source is wave energy - an energy source with great potential but still relatively new with the need for further development. LÄS MER

  5. 4. Nutrients spreading with cloudburst modeling

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Nikita Smiyanov; [2020]
    Nyckelord :MIKE21; 2D-modeling; nutrients; phosphorus; nitrogen; cloudburst; land-use; MIKE21; 2D-modellering; närsalter; fosfor; kväve; skyfall; markanvändning;

    Sammanfattning : Climate change and environmental disasters are strongly dependent. Humanity is facing considerable changes in environmental adaptions and remediation of contaminated sites. Water is a valuable resource that should be protected and prevented from hazardous influences. LÄS MER

  7. 5. Anpassning av småskaliga vattenkraftverk för ö-drift av lokalt elnät

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Elektricitetslära

    Författare :Jonatan Fredriksson; [2019]
    Nyckelord :small hydropower; hydropower; Kaplan; turbine; transient; disturbance; resilliance; power grid; island; islanding; adapting; island mode; frequency control; dummy load; Kaplan; Kaplanturbin; elnät; ö-nät; ö-drift; vattenkraft; småskaliga vattenkraftverk; transient störningstålighet; indexprov; kombineringsprov; lokalt elnät;

    Sammanfattning : This master thesis examines technical requirements for small hydro power plants (HPP) to operate proximate parts of the power grid in island mode. The work examines how small hydropower can be modified and complemented with additional technologies to achieve sufficient frequency control capabilities. LÄS MER