Search for dissertations about: "square"

Showing result 1 - 5 of 590 swedish dissertations containing the word square.

  2. 1. Flocculation in a stirred square tank

    Author : Kalle Pelin; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LDA; square tank; flocculation; particle sizing; CFD; modelling; sliding grid; fluid dynamics;

    Abstract : .... READ MORE

  4. 2. Between square and circle : A study on the behaviour of polygonal steel profiles under compression

    Author : Panagiotis Manoleas; Ove Lagerqvist; Efthymios Koltsakis; Leroy Gardner; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; polygonal; RCPS; plate buckling; shell buckling; towers; transmission lines; wind turbines; high strength steel; Stålbyggnad; Steel Structures;

    Abstract : The present study explores the structural properties of regular convex polygonal cross section (RCPS). Such profiles are commonly used to construct masts and towers, e.g.  transmission towers, light poles etc. READ MORE

  5. 3. Hydrodynamics in a stirred square tank investigated using PIV and LDA measurements

    Author : Jesper Kilander; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; energy dissipation; macro instabilities; large eddy PIV approach; laser doppler anemometry; hydrofoil impeller; particle image velocimetry; hydrodynamics; square tank;

    Abstract : .... READ MORE

  6. 4. Measurement and Analysis of Partial Discharges at Semi-Square Voltages

    Author : Elisabeth Lindell; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; space charge; Partial discharges PDs ; short rise time; partial discharge measuring techniques; square-like voltages; repetitive voltages; corona;

    Abstract : Insulation is today being exposed to voltages having considerably higher frequency components than the conventional power frequency AC 50 Hz or 60 Hz, for example in motors supplied by adjustable speed drives based on pulse width modulated converters. This has in many cases caused unexpected behaviour of the insulation systems. READ MORE

  7. 5. On the Mean Square Error of Transfer Function Estimates with Applications to Control

    Author : Svante Gunnarsson; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mean square error; Transfer function; Estimation; Applications;

    Abstract : In this report we study the mean square error of transfer function estimates obtained by identification. The model quality is related to the use of models in regulator design, and the properties of affecting the bias part of the mean square error, both in fixed parameter control and adaptive control. READ MORE