Sökning: "NACA"

Visar resultat 1 - 5 av 28 uppsatser innehållade ordet NACA.

  1. 1. Weight Optimization of Vertical-Axis Wind Turbine Blades constructed in Swedish Fossil Free Steel : With respect to fatigue life time

    Master-uppsats, Linnéuniversitetet/Institutionen för maskinteknik (MT)

    Författare :Johannes Hall; Albin Larsson; [2023]
    Nyckelord :VAWT; Wind Turbine Blade; SSAB; Fossil-Free; Weight Optimization; Topology Optimization; Sizing Optimization; NACA 0018; STRENX 1300; Abaqus; Tosca Structure; VAWT; Vindturbinblad; SSAB; Fossilfritt; Viktoptimering; Topologioptimering; Size-Optimering; NACA 0018; STRENX 1300; Abaqus; Tosca Structure;

    Sammanfattning : Wind turbines have been utilized for centuries to harness energy from the wind. Commercial wind turbine blades are typically made from composite materials, which are difficult to recycle, leading to blades ending up in landfills at the end of their lifecycle. Additionally, these materials contribute to microplastic pollution. LÄS MER

  3. 2. CFD Optimization of Hydrofoiling Concept for A New Era of Sea Transports

    Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Författare :Anlun Li; [2022]
    Nyckelord :Optimization; Hydrofoil; FoilCart; Transportation; CFD; Optimering; Hydrofoil; FoilCart; Transport; CFD;

    Sammanfattning : The aim of this master thesis is to develop and optimize the main wing of a T-shaped hydrofoil for a small passenger vessel called FoilCart. The project is in collaboration with KTH Maritime Robotic Lab. The existing prototype of the hydrofoil is built by a company called ZPARQ\cite{Zparq}, but the efficiency of the main wing is not optimized. LÄS MER

  4. 3. Bättre kurskontroll-och styregenskaper för Project Oceanbirds experimentbåt

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Marcus Olivecrona; Edvin Hagberg; [2022]
    Nyckelord :oceanbird; roder; centerbord; segling;

    Sammanfattning : Sjötransport står i dagsläget för 80 % av vår globala godstransport och representerar3 % av de globala utsläppen. Åtgärder tas för att minska utsläppen och rederietWallenius Marine har ambitionen att utveckla ett fartyg som med vindenergi tar sigframåt, något som skall minska dess utsläpp med upp till 90 %. LÄS MER

  5. 4. Wake analysis for NACA4412 in free-flight condition

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :William Nord Nilsson; Oskar Hedström; [2021]
    Nyckelord :;

    Sammanfattning : The purpose of this project is to evaluate the differences in the wake of a NACA 4412 airfoil in free-flight condition compared to wind tunnel and also investigate wall-interference. This was done using two sets of angles of attack, 5 degrees and 8 degrees. LÄS MER

  7. 5. Rig Performance Evaluation for Wind Powered Pure Car Carrier

    Master-uppsats, KTH/Marina system

    Författare :Valérie Aurore Bouysses; [2020]
    Nyckelord :;

    Sammanfattning : Carrying around 80-90% of world volume of goods, the shipping industry has a considerable environmental impact. The International Maritime Organization (IMO) fixed a 50% greenhouse gases emission reduction target by 2050 with respect to 2008 levels. LÄS MER