Sökning: "Air drag"

Visar resultat 1 - 5 av 67 uppsatser innehållade orden Air drag.

  1. 1. Aerodynamics simulations of Scania trucks using OpenFOAM

    Master-uppsats, KTH/Teknisk mekanik

    Författare :Ziyi Liu; [2024]
    Nyckelord :Heavy-duty truck; Computational fluid dynamics; Air drag; OpenFOAM;

    Sammanfattning : In the field of heavy-duty vehicles, fuel efficiency and environmental protection are factors that need to be focused on, while the aerodynamic drag generated during vehicle travelling is one of the most influential aspects. This thesis delves into the aerodynamic simulation of Scania trucks using the open-source Computational Fluid Dynamics (CFD) tool, OpenFOAM v2206. LÄS MER

  3. 2. Thermal Analysis of Wave Energy Converter : Developing a Compact CHT Model for Operational Insights

    Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära

    Författare :Jakob Jidbratt; Joel Leckström; [2023]
    Nyckelord :Computational Fluid Dynamics; CFD; Conjugate Heat Transfer; CHT; Wave Energy Converter; WEC; Moving mesh; Ball screw;

    Sammanfattning : Climate change is a critical global issue that continues to shape the way we understand and interact with the world around us. It is discussed more than ever before, especially in politics. LÄS MER

  4. 3. Aerodynamic Analysis of Reflex Airfoils at Low Reynolds Numbers

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

    Författare :Alexander Elliott Meyer Ströborg; [2022]
    Nyckelord :low Reynolds number; reflex airfoils; CFD; XFOIL;

    Sammanfattning : Low Reynolds number airfoil analysis has become increasingly significant as urban air mobility vehicles and unmanned aerial vehicles surge in popularity. The Green Raven project at KTH Aero aims to use reflex airfoils where little data is available beyond classical analysis. LÄS MER

  5. 4. Fatigue Life Prediction of a Topology-Optimised Polyamide-12 Part Manufactured with Multi-Jet Fusion Technology

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

    Författare :Shylesh Mahendran; [2022]
    Nyckelord :Fatigue Life; Topology Optimisation; Polyamide-12; PA12; Trötthetsliv; Topologioptimering; Polyamid-12; PA12;

    Sammanfattning : Additive manufacturing methods has been prevailing for several decades and the recent technological advancements brings in the flexibility and consideration for large-scale production in the industries. The components manufactured with these methods have wide variety of applications and therefore, it is crucial to investigate the mechanical performance of the printed parts. LÄS MER

  7. 5. Extended Kalman Filter as Observer for a Hydrofoiling Watercraft : Modelling of a new hydrofoiling concept, based on the Spherical Inverted Pendulum Model

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Adam Thålin; [2022]
    Nyckelord :Extended Kalman Filter; Hydrofoiling; Spherical Inverted Pendulum; Sensor Fusion; Simulink; Bärplan; Extended Kalman Filter; Farkostteknik; Inverterad Pendel; Sensorfusion; Sex frihetsgrader; Simulink;

    Sammanfattning : Hydrofoiling in general has the potential to revolutionize watercraft in the future since it allows smoother and faster transport on water with less energy consumption than traditional planning hulls. Even if the concept of hydrofoiling has been around since the last century, development in control theory and material science together with increased computing power has led to a growing interest for the technology. LÄS MER