Search for dissertations about: "lifting surface"

Showing result 1 - 5 of 11 swedish dissertations containing the words lifting surface.

  1. 1. Numerical optimization of hull/propeller/rudder configurations

    Author : Kaijia Han; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fuel cost savings; optimization; pressure fluctuation; self-propulsion; RANS; verification and validation; cavitation; open water; lifting surface; hull-propeller-rudder; effective wake; efficiency; aspect ratio; lifting line; interaction;

    Abstract : The new framework of the global economy has stimulated and expanded the shipbuilding and shipping industry, especially in Asia in the twenty-first century. This induces urgent and high requirements on designing and building both conventional and new types of ships with high performance, such as high speed, manoeuvrability, seaworthiness and so on. READ MORE

  2. 2. Development of Vortex Filament Method for Aerodynamic Loads on Rotor Blades

    Author : Hamidreza Abedi; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; free wake; aerodynamic load; wind turbine; vortex lattice method; rotor blade; lifting surface; prescribed wake; lifting line;

    Abstract : Wind power is currently one of the most reliable new energy sources serving as an alternative tofossil fuel generated electricity and is known as a widely distributed clean and renewable sourceof energy. It is now the world’s fastest growing energy source and has also become one of themost rapidly expanding industries. READ MORE

  3. 3. Laser welding and cladding the effects of defects on fatigue behaviour

    University dissertation from Luleå tekniska universitet

    Author : Md. Minhaj Alam; Luleå tekniska universitet.; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Manufacturing Systems Engineering; Produktionsutveckling;

    Abstract : The thesis focuses on weld defects in laser processed materials (for laser welding, laser hybrid arc welding and laser cladding) and their effect on the fatigue life of components. Component properties were studied with particular emphasis on the macro and micro surface geometry, weld defects and clad defects. READ MORE

  4. 4. Modelling nutrient transport from forest ecosystems to surface waters : The model ForSAFE-2D

    University dissertation from Lund University, Faculty of Science, Department of Physical Geography and Ecosystem Science

    Author : Giuliana Zanchi; Lunds universitet.; Lund University.; Lunds universitet.; Lund University.; [2016-11]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; forest; dynamic modelling; hydrology; biogeochemistry; ecosystem service;

    Abstract : Skogar tillhandahåller en mångfald av produkter och tjänster som alla är kopplade till vattenresurser. Träd behöver vatten för att växa och samtidigt förändrar träd kvalitén och kvantiteten av avrinningen genom modifiering av vatten- och näringsämneskretsloppet. READ MORE

  5. 5. Asymmetric lateral loading of the human trunk

    University dissertation from Stockholm : Karolinska Institutet, Department of Neuroscience

    Author : Qiang-Min Huang; Karolinska Institutet.; Karolinska Institutet.; [2001]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Eccentric; concentric; isokinetic; electromyography; co-activation; trunk; spinal biomechanics; contraction patterns; lateral bending; lifting and lowering; balance; kinematics; postural control; IAP; support translation.;

    Abstract : The overall aim of this thesis was to characterize the biomechanics and neuromuscular control of the human trunk in response to asymmetric lateral loading. The pulling force and strength capacities as well as muscle activation patterns, trunk kinematics and postural balance in relation to lateral trunk flexion and loading were given special consideration. READ MORE