Sökning: "street grid"

Hittade 5 avhandlingar innehållade orden street grid.

  1. 1. Energy Savings by Using Daylight for Basic Urban Shapes : With a Case Study of Three Different Street Types

    Författare :Bengt Sundborg; Tigran Haas; Jan Ejhed; Ulf Ranhagen; Barbara Matusiak; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; daylight; energy; climate; urban design principles; urban pattern; street grid; Arkitektur; Architecture;

    Sammanfattning : During winter the sun is in short supply. But research at KTH shows that solar radiation can be facilitated while energy consumption for lighting is reduced. This provided that the buildings are appropriately designed. But, unfortunately, the sunlight is often not taken into account and the results are the opposite. LÄS MER

  3. 2. Numerical study on flow and pollutant dispersion inside street canyons

    Författare :Yang Yunkai; Martinac Ivo; Peng Shia-Hui; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Flow; Pollutant dispersion; CFD; Street canyon; Reliability; SRA - Energy; SRA - Energi;

    Sammanfattning : This thesis analyzes the characteristics of flow pattern and vehicle-emitted pollutant dispersion in roughness surface layer. In an urban environment, wind flow and transported-pollutant source interfere strongly with buildings and other roughness elements on the surface ground, which results in complex characteristics of flow pattern and pollutant dispersion in 3D circumstances. LÄS MER

  4. 3. Mobility and opportunistic resource allocation in wireless multimedia networks

    Författare :Vladimir Vukadinovic; Gunnar Karlsson; Nitin Vaidya; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telecommunication; Telekommunikation;

    Sammanfattning : In order to support increasing traffic loads, mobile operators need cost-effective solutions to improve the spectral efficiency of their cellular networks, or to off-load them by diverting some of the load to other networks. Advances in the radio resource management may to some extent reduce the need for costly new deployments. LÄS MER

  5. 4. Prediction and Optimisation of Traffic Noise. A Study on Noise Barriers and Shielded Areas

    Författare :Pontus Thorsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; city canyon; absorption; city noise; insertion loss; traffic noise; soundscape; silent side; noise barrier; ground impedance;

    Sammanfattning : The main contribution of noise levels in cities is today road traffic. The strongest source for all road vehicles is most often the tyre-road contact. This source position close to the ground is fortunate with respect to secondary noise abatement measures, such as absorbing road surfaces or noise barriers. LÄS MER

  7. 5. Numerical Simulations for Studies of Unsteady Combustion in Practical Combustion Devices

    Författare :Sven-Inge Möller; Förbränningsfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; plasmas; fluiddynamik; Gaser; plasma; Thermal engineering; applied thermodynamics; termodynamik; Termisk teknik; fluid dynamics; Gases; Physics; Fysik; Fysicumarkivet A:2002:Möller;

    Sammanfattning : A major problem in the design of combustion equipment is to prevent the occurrence of combustion instabilities. Combustion instabilities appear as periodic oscillations in pressure and heat release through a feedback mechanism between the fluid dynamics and the combustion process. These oscillations may induce e.g. LÄS MER