Search for dissertations about: "cavity wall"

Showing result 1 - 5 of 48 swedish dissertations containing the words cavity wall.

  2. 1. A Study of Turbulent Natural Convection Boundary Layers Using Large-Eddy Simulation

    Author : Darioush Gohari Barhaghi; Chalmers tekniska högskola; []
    Keywords : natural convection boundary layer; DNS; LES; radiation heat transfer; free convection; cavity; vertical cylinder;

    Abstract : The structure of turbulent natural convection boundary layers in differentgeometries and the effect of the buoyancy on a mixed convection boundarylayer are investigated. These geometries comprise a vertical finitecylinder, a vertical infinite channel, a cavity and a vertical finite channel. READ MORE

  4. 2. Impedance and Instabilities in the MAX IV 3 GeV Ring

    Author : Galina Skripka; Lunds universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Collective effects; geometric impedance; resistive wall impedance; wakefields; particle tracking; harmonic cavity;

    Abstract : To ensure the beam with an ultralow emittance and high current the possible effects deteriorating the beam stability must be investigated. When ultrarelativistic particles travel in the vacuum chamber they induce electromagnetic fields which can act back on them and the following particles. READ MORE

  5. 3. Abdominal wall complications after urological surgery

    Author : Maria Hermann; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Background: Abdominal wall complications such as incisional hernia, bulging, and pain are known complications of surgery in the abdominal cavity. Most previous studies have been conducted on general surgical procedures, whereas few have been conducted on patients treated for urological cancer. READ MORE

  6. 4. Propagation of weak shock waves in an elliptical cavity

    Author : Göran Gustafsson; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningslära; Fluid Mechanics;

    Abstract : The propagation of weak shock waves in a planar elliptical cavity is studied theoretically and experimentally. The results are of interest in the design of an elliptical high-speed water jet generator operating in a transient fashion with electrically generated shocks in the acoustic regime. READ MORE

  7. 5. Low Phase Noise GaN HEMT Oscillator Design based on High-Q resonators

    Author : Mikael Hörberg; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; resonator coupling; reflection oscillator; MMIC; phase noise; cavity resonator; low-frequency noise; GaN HEMT; MEMS;

    Abstract : The thesis considers the design and optimization of oscillators targeting low phase noise, given boundary conditions from the technology. Crucial technology figures are power capability, RF noise figure, low-frequency noise and the quality factor (Q-factor) of the resonator. READ MORE