Sökning: "Detached Eddy Simulation"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden Detached Eddy Simulation.

  1. 1. A CFD Study Of The Aerodynamic Eects OfPlatooning Trucks

    Master-uppsats, KTH/Mekanik

    Författare :David Norrby; [2014]
    Nyckelord :;

    Sammanfattning : In the present work the aerodynamic forces on trucks driving in so-called platoon are investigated in a numerical fashion. Driving in platoon, or convoy, refers to in an orderly manner driving in a line, one truck after the other, taking advantage of the unrecovered _ow behind each truck. The phenomenon is called slipstreaming or drafting. LÄS MER

  3. 2. Sensitivity Analysis of Near-Wall Turbulence Modeling for Large Eddy Simulation of Incompressible Flows

    Master-uppsats, KTH/Numerisk analys, NA

    Författare :Khan Raqib Mahmud; [2014]
    Nyckelord :;

    Sammanfattning : Wall layer models are very important for the simulation of turbulent flows in complex geometries to characterize the significant flow features. For the simulation of turbulent flows, the performance of Large Eddy Simulation techniques with different wall layer models which we refer to as near-wall turbulence modeling for turbulent flows are analyzed. LÄS MER

  4. 3. Numerical study of a wind tunnel setup for measuring train slipstream with Detached Eddy Simulation

    Master-uppsats, KTH/Fordonsdynamik

    Författare :Yogeshwar Dhanabalan; [2013]
    Nyckelord :Train Aerodynamics; Slipstream; Detached Eddy Simulation;

    Sammanfattning : High speed trains have become an integral part of the transportation systems around the world. With increasing speed, very high velocities are generated in the region around the train known as slipstream. Experimental studies have been conducted over the last few decades to study the effect of these phenomena. LÄS MER

  5. 4. Numerical Investigation of Flow Induced Noise in a Simplified HVAC Duct with OpenFOAM

    Master-uppsats, KTH/Flygdynamik

    Författare :Cong Wang; [2013]
    Nyckelord :;

    Sammanfattning : Due to the growing demand for comfort, the noise generated by HVAC components should be considered by the designers. Flow induced noise is one of the major contributors to the noise in HVAC systems. By means of computational aero-acoustics(CAA), the mechanism of noise generationis able to be studiedin the design phase. LÄS MER

  7. 5. CFD Study of the Flow around a High-Speed Train

    Master-uppsats, KTH/Aerodynamik

    Författare :Florian Guillou; [2012]
    Nyckelord :Computational Fluid Dynamic; slipstream; Reynolds Averaged Navier Stokes model; k-ω SST model; aerodynamic; Aerodynamic Train Model; wake; high-speed train;

    Sammanfattning : This document is a report summering the master thesis work dealing with the Computational Fluid Dynamic (CFD) study of the flow around a high-speed train. The model is a scaled 1:50 generic train with two cars, one inter-car gap and simplified bogies. LÄS MER