Sökning: "proper orthogonal decomposition POD"

Visar resultat 1 - 5 av 32 avhandlingar innehållade orden proper orthogonal decomposition POD.

  1. 1. Utilization of Decomposition Techniques for Analyzing and Characterizing Flows

    Författare :Christian Carlsson; Strömningsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Decomposition techniques; Proper orthogonal decomposition; Dynamic mode decomposition; Extended dynamic mode decomposition; Swirl switching; Swirling flow; Low swirl burner; Fluid-structure interaction;

    Sammanfattning : This thesis presents the utilization of two different decomposition techniques, proper orthogonal decomposition (POD) and dynamic mode decomposition (DMD), for enhanced understanding of flow structures and their stability. The advantages of these techniques are shown for a range of flow situations, most of which are turbulent. LÄS MER

  3. 2. Active Flow Control for Reducing Drag on Trucks: from Concept to Full Scale Testing

    Författare :Guglielmo Minelli; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; AFC; Experiments; Vehicle Aerodynamics; Partially-Averaged Navier-Stokes; PANS; LES; Wind Tunnel; POD; Active Flow Control; Large Eddy Simulations; Proper Orthogonal Decomposition; PIV;

    Sammanfattning : There is no doubt that road vehicle transportation is needed to improve efficiency, to reduce power consumption and to contribute to a sustainable mobility. Aerodynamics plays a crucial role in this, and its optimization can have a significant impact on fuel efficiency. LÄS MER

  4. 3. Wind Tunnel Studies of Turbulent Wakes

    Författare :Murat Tutkun; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; surface visualization; wind tunnel; two-point correlation; proper orthogonal decomposition; pod; bump; wake; axisymmetric wake; hot-wire anemometry; separation; turbulence;

    Sammanfattning : .... LÄS MER

  5. 4. Swirl stabilized premixed flame analysis using of LES and POD

    Författare :Piero Iudiciani; Strömningsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Precessing Vortex Core; Swirl stabilization; Lean Premixed Combustion; Proper Orthogonal Decomposition; Large Eddy Simulation;

    Sammanfattning : For environmental and human health reasons, the regulations on the emissions from combustion devices are getting more and more strict. In particular, it is important to abate the emission of pollutants deriving from combustion in gas turbines. A solution is the use of swirl stabilized, lean premixed combustion. LÄS MER

  7. 5. Structure of Zero Pressure Gradient High Reynolds Number Turbulent Boundary Layers

    Författare :Murat Tutkun; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fourier decomposition.; proper orthogonal decomposition; large scale structures; Turbulent boundary layers; zero pressure gradient; wind tunnel; calibration; cross-correlations; hot-wire; two-point correlations; high Reynolds number;

    Sammanfattning : This thesis presents part of the large research program funded by the European Commission calledWallturb: A European synergy for the assessment of wall turbulence. The main aim of this researchprogram is to create new experimental and numerical databases on the characteristics of turbulent wall-bounded flows, especially turbulent boundary layers. LÄS MER