Sökning: "Drag reduction"

Visar resultat 1 - 5 av 66 uppsatser innehållade orden Drag reduction.

  1. 1. A case study on Trucks’Crossmembers at Volvo Group

    Master-uppsats, KTH/Produktionsutveckling

    Författare :Aman Sultania; [2023]
    Nyckelord :;

    Sammanfattning : This thesis aims at investigating the crossmember business within the context of Volvo Trucks, with a focus on identifying standardization opportunities and optimizing the supply chain for improved efficiency and cost savings. The objectives of this study include mapping commonalities in design, raw material grade, surface finish, and thickness across different trucks and brands. LÄS MER

  3. 2. Cable Shape Optimization - Drag Reduction of Cables Used in Marine Applications

    Master-uppsats, KTH/Teknisk mekanik

    Författare :Simon Garpenquist; [2023]
    Nyckelord :Wind Tunnel Experiment; Computational Fluid Dynamics; Aerodynamic Forces; Drag Reduction; Shape Optimization; Flow around Cylinders; Yacht Racing;

    Sammanfattning : It is important to understand the aerodynamic properties of tensioned cables (e.g. used in suspension bridges and yacht riggings), both for drag reduction and vibrational suppression purposes. LÄS MER

  4. 3. A cross-correlation analysis of a warm super-Neptune using transit spectroscopy

    Kandidat-uppsats, Uppsala universitet/Institutionen för fysik och astronomi

    Författare :Elias Önerud; [2023]
    Nyckelord :Cross-correlation; cross-correlation spectroscopy; cross-correlation analysis; super-Neptune; astronomy; astrophysics; WASP-107; WASP-107 b; CRIRES ; SysRem; exoplanet; transmission spectrum; transit;

    Sammanfattning : A study was made in order to deduce whether certain chemical species, namely water (H2O) and carbon monoxide (CO), are present in the atmosphere of the exoplanet WASP-107 b, which lies about 200 light-years away from Earth in the constellation Virgo. The project was carried out at Uppsala University at the Department of Physics and Astronomy. LÄS MER

  5. 4. När platserna inte räcker till : En kvalitativ studie om gatekeeping inom dansvärlden

    Kandidat-uppsats, Södertörns högskola/Sociologi

    Författare :Linn Yttersjö; [2023]
    Nyckelord :dance world; dance residency; selection; gatekeeping; uncertainty; uncertainty reduction; conventions; dansvärld; dansresidens; urval; gatekeeping; osäkerhet; osäkerhetsreducering; konventioner;

    Sammanfattning : The aim of this study is to widen the sociological knowledge about how gatekeepers make selections, in contexts characterized by uncertainty. This is examined through the dance world as empirical case, based on the question “How do gatekeepers orientate themselves in the uncertainty that characterizes decision-making around which dance artists should be assigned dance residencies?”. LÄS MER

  7. 5. Active flow control of the turbulent boundary layer over a NACA4412 wing profile for skin friction drag reduction

    Master-uppsats, KTH/Teknisk mekanik

    Författare :Giacomo Semprini Cesari; [2023]
    Nyckelord :Active flow control; drag reduction; numerical simulations; turbulent boundary layer; wings;

    Sammanfattning : In the context of building a framework for active flow control of turbulent boundary layers in wings, a set of large-eddy simulation (LES) are implemented in OpenFOAM. The flow around a NACA4412 wing profile is simulated at 5° angle of attack and Re_c = 400˙000. LÄS MER