Sökning: "wave interaction"

Visar resultat 11 - 15 av 293 avhandlingar innehållade orden wave interaction.

  1. 11. Supersonic flow separation with application to rocket engine nozzles

    Författare :Jan Östlund; KTH; []
    Nyckelord :turbulent; boundary layer; shock wave; interaction; overexpanded; rocket nozzle; flow separation; control; side-load; experiments; models; review;

    Sammanfattning : The increasing demand for higher performance in rocketlaunchers promotes the development of nozzles with higherperformance, which basically is achieved by increasing theexpansion ratio. However, this may lead to flow separation andensuing instationary, asymmetric forces, so-called side-loads,which may present life-limiting constraints on both the nozzleitself and other engine components. LÄS MER

  3. 12. Flow Processes in Rocket Engine Nozzles with Focus on Flow Separation and Side-Loads

    Författare :Jan Östlund; KTH; []
    Nyckelord :turbulent; boundary layer; shock wave; interaction; intermittent; overexpanded; rocket nozzle; flow separation; side-load; models; criteria; prediction; review;

    Sammanfattning : .... LÄS MER

  4. 13. Relativistic light-matter interaction

    Författare :Tor Kjellsson Lindblom; Eva Lindroth; Bernard Piraux; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Time-dependent Dirac equation; Beyond dipole effects; Relativistic effects; High-Intensity laser-matter interaction; teoretisk fysik; Theoretical Physics;

    Sammanfattning : During the past decades, the development of laser technology has produced pulses with increasingly higher peak intensities. These can now be made such that their strength rivals, and even exceeds, the atomic potential at the typical distance of an electron from the nucleus. LÄS MER

  5. 14. Aspects of Wave Interaction in Nonlinear Media

    Författare :Björn Hall; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Selected aspects of various types of nonlinear wave interaction are investigated. These aspects are studied in terms of Nonlinear Schrödinger equations, mainly analytically and numerically, but also experimentally. LÄS MER

  7. 15. Finite Element Modelling of Fluid-Structure Interaction

    Författare :Göran Sandberg; Byggnadsmekanik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Finite Element Method; Coupled problem; fluid-structure interaction; Transient; Acoustics; Caviation; Time Stepping; Symmetric; Nonlinear acoustics; Submerged structures; finite element method; Coupled problem; Fluid-structure interaction; Transient; Acoustics; Cavitation; Time Stepping; Symmetric; Nonlinear acoustics; Submerged structures;

    Sammanfattning : The dynamic interaction between non-viscid, compressible fluid and an elastic structure is studied. Finte element formulations, using the weighted residual method, are derived. Different primary variables in the fluid domain are used and different source functions are considered. LÄS MER