Search for dissertations about: "shock waves"

Showing result 1 - 5 of 48 swedish dissertations containing the words shock waves.

  2. 1. On focusing of strong shock waves

    Author : Veronica Eliasson; Nicholas Apazidis; Nils-Erik Molin; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; shock focusing; imploding shock; converging shock; reflected shock; annular shock tube; Fluid mechanics; Strömningsmekanik;

    Abstract : Focusing of strong shock waves in a gas-filled thin test section with various forms of the reflector boundary is investigated. The test section is mounted at the end of the horizontal co-axial shock tube. Two different methods to produce shock waves of various forms are implemented. READ MORE

  4. 2. On focusing of shock waves

    Author : Veronica Eliasson; Nicholas Apazidis; John Dear; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; converging shock; Euler equations; imploding shock; Mach reflection; regular reflection; shock focusing; shock tube; Fluid mechanics; Strömningsmekanik;

    Abstract : Both experimental and numerical investigations of converging shock waves have been performed. In the experiments, a shock tube was used to create and study converging shock waves of various geometrical shapes. Two methods were used to create polygonally shaped shocks. READ MORE

  5. 3. On dynamics and thermal radiation of imploding shock waves

    Author : Malte Kjellander; Nicholas Apazidis; Gabi Ben-Dor; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; converging shock waves; polygonal shock waves; temperature measurments; argon; plasma creation; ionisation; spectrometry; Engineering mechanics; Teknisk mekanik;

    Abstract : Converging cylindrical shock waves have been studied experimentally. Numericalcalculations based on the Euler equations and analytical comparisons basedon the approximate theory of geometrical shock dynamics have been made tocomplement the study.Shock waves with circular or polygonal shock front shapes have been createdand focused in a shock tube. READ MORE

  6. 4. Transient Electromagnetic Waves in Nonlinear Media

    Author : Daniel Sjöberg; Institutionen för elektro- och informationsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signal processing; nonlinear materials; Electromagnetic waves; instantaneous response; waveguides; shock waves; entropy condition; Elektronik och elektroteknik; Electronics and Electrical technology; Signalbehandling; Electromagnetism; optics; acoustics; Elektromagnetism; optik; akustik;

    Abstract : This thesis is concerned with the propagation of transient electromagnetic waves in nonlinear media. It consists of a General Introduction and five scientific papers. The General Introduction gives a broad overview of nonlinear electromagnetic phenomena. READ MORE

  7. 5. Stability results for viscous shock waves and plane Couette flow

    Author : Mattias Liefvendahl; KTH; []
    Keywords : nonlinear stability; shock waves; Couette flow; Chebyshev spectral method; resolvent estimates; threshold amplitudes;

    Abstract : .... READ MORE