Search for dissertations about: "Fredrik Wallin"

Showing result 1 - 5 of 13 swedish dissertations containing the words Fredrik Wallin.

  1. 1. Added Values of Remote Collected Electricity Consumption Data : Software Solutions for Demand-Side Management

    Author : Fredrik Wallin; Mälardalens högskola; []

    Abstract : .... READ MORE

  2. 2. Aerodynamic Design and Optimization of Intermediate Ducts for High By-pass Ratio Jet Engines

    Author : Fredrik Wallin; Chalmers University of Technology; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Intermediate transition ducts; vortex generators; S-shaped ducts; response surface methodology; source term model; optimization;

    Abstract : Demands on improved efficiency and reduced noise levels cause a strive toward high by-pass ratio commercial aero engines. This results in multi-spool aero engines with small high-pressure ratio cores and large fans. The low-pressure system has a lower rotational speed and a larger radius than the high-pressure core system. READ MORE

  3. 3. Flow Control and Shape Optimization of Intermediate Turbine Ducts for Turbofan Engines

    Author : Fredrik Wallin; Chalmers University of Technology; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CFD; response surface methodology; intermediate turbine duct; vortex generators; turbine intermediate case; endwall contouring; turbine center frame; body-force model; shape optimization; mid-turbine frame; flow control;

    Abstract : Demands on improved efficiency, reduced emissions and lowered noise levels cause a strive towards high by-pass ratios of commercial turbofan engines. This results in an increased radial offset between the high- and low-pressure turbines. Thus the design of the intermediate turbine duct connecting the two turbines becomes more challenging. READ MORE

  4. 4. New opportunities provided by the Swedish electricity meter reform

    Author : Fredrik Wallin; Erik Dahlquist; Eva Thorin; Peter Roots; David Natusch; Mälardalens högskola; []
    Keywords : automatic meter reading AMR ; advanced metering infrastructure AMI ; peak load; consumption patterns; visualize; consumption feed-back; added values; demand-based; tariffs; bottom-up modeling; web-based applications; TECHNOLOGY; TEKNIKVETENSKAP; Energy- and Environmental Engineering; energi- och miljöteknik;

    Abstract : The reduction of the impact of energy consumption is a priority issue and a major challenge that concerns every country in the world. This is a complex task that needs to be tackled from several angles in the search for areas where optimizations and savings can be made. READ MORE

  5. 5. Key Challenges in Decision Making for Automotive E/E Architectures

    Author : Peter Wallin; Jakob Axelsson; Christer Norström; Stig Larsson; Fredrik Ekdahl; Mälardalens högskola; []
    Keywords : automotive E E architectures; challenges; decision making; TECHNOLOGY; TEKNIKVETENSKAP; Computer Science; datavetenskap;

    Abstract : The amount of electronics in vehicles is growing quickly, thus systems are becoming increasingly complex making the engineering of these software intensive systems more and more difficult. In particular, an architecture supporting the business goals is a prerequisite for successful design. READ MORE