Sökning: "Drag reduction"

Visar resultat 11 - 15 av 66 uppsatser innehållade orden Drag reduction.

  1. 11. Numerical Study on Aerodynamic Drag Reduction on a Rear Wing of a Formula Student Car

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

    Författare :Mahim Ahsan; [2021]
    Nyckelord :;

    Sammanfattning : The importance of aerodynamics in racing has increased substantially over the past decades. Racing vehicles utilize different aerodynamic devices, to redirect the airflow around the vehicle in a beneficial way. The increase in downforce using an aerodynamic wing package increases drag force. LÄS MER

  3. 12. Luge Aerodynamics: Drag Reduction through Posture Changes

    Master-uppsats, KTH/Strömningsmekanik och Teknisk Akustik

    Författare :Malte Sloma; [2021]
    Nyckelord :;

    Sammanfattning : Luge is an Olympic discipline that challenges athletes to race down an ice track at high velocities. By means of computer simulations, this study exam-ines how posture changes of the athlete affect the aerodynamics to decrease drag. LÄS MER

  4. 13. Noise Reduction of Scintillation Camera Images Using UNET: A Monte Carlo Simulation Approach

    Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

    Författare :Johanna Korpijärvi; [2021]
    Nyckelord :Medicine and Health Sciences;

    Sammanfattning : Background The project aims to reduce the noise in planar 111-In projections with a machine learning model. Method Sixteen base phantoms were used to create 696 phantoms in XCAT. An anterior planar projection was simulated with 111-In and ten uptake curves for each phantom in SIMIND. LÄS MER

  5. 14. Optimal torque split strategy for BEV powertrain considering thermal effects

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

    Författare :Dhananjay Yadav; [2021]
    Nyckelord :Optimal torque-split control strategy; battery electric vehicles; thermal model of electric machines; system identification; model order reduction; co-simulation.; Optimal vridmomentsdelningsstyrningsstrategi; batteridrivna fordon; termiska modeller av elektriska maskiner; systemidentifiering; minskning av modellorder; samsimulering.;

    Sammanfattning : A common architecture for electric vehicles is to have two electric machines one each on the front and rear axle. Despite the redundancy, this configuration ensures performance. Being energy efficient is equally important for electric vehicles to deliver a sufficiently high range. LÄS MER

  7. 15. Neural Network Based Model Predictive Control of Turbulent Gas-Solid Corner Flow

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Signaler och system

    Författare :Simon Wredh; [2020]
    Nyckelord :computational fluid dynamics; machine learning; system identification; control theory; multi-phase flow; gas-solid flow; rans; lagrangian particle tracking; neural network; model predictive control; bio-aerosol;

    Sammanfattning : Over the past decades, attention has been brought to the importance of indoor air quality and the serious threat of bio-aerosol contamination towards human health. A novel idea to transport hazardous particles away from sensitive areas is to automatically control bio-aerosol concentrations, by utilising airflows from ventilation systems. LÄS MER