Sökning: "urban flows"

Visar resultat 1 - 5 av 97 avhandlingar innehållade orden urban flows.

1. 1. Urban heavy metals : Stocks and flows

   Författare :Louise Sörme; Linköpings universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Heavy metais; urban areas; Substance flow analysis; inflow; stock; outflow; diffuse emisson; waste; wastewater treatment plant; legislation; Tungmetaller; miljöaspekter; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

   Sammanfattning : Levels of heavy metals in different media are high today, both in Stockholm and other urban areas. Where do the metals come from? Production emissions and point sources are not the answer, since earlier research has shown that production emissions are lower than emission from goods during use (the diffuse emission). LÄS MER

3. 2. URBAN SEGREGATION AND URBAN FORM : From residential segregation to segregation in public space

   Författare :Ann Legeby; Lars Marcus; Eva Öresjö; Anna-Johanna Klasander; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; urban segregation; urban form; urban design; housing segregation; residential segregation; public space; co-presence; public life; spatial affordance; Architecture; Arkitektur;

   Sammanfattning : Urban segregation is considered a major social problem in Sweden and several national anti-segregation initiatives have been launched to decrease social and ethnic segregation but so far only with marginal effects (SOU 2005:29). Urban design and town planning are rarely the focus in national anti-segregation initiatives; the architectural issue has mainly been confined to matters concerning housing policies. LÄS MER

4. 3. An exerimental study of the flow in a sharp-heel draft tube

   Författare :Urban Andersson; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningslära; Fluid Mechanics;

   Sammanfattning : The goal of the Turbine 99 Draft Tube experiments is to provide extensive experimental data on a well-defined sharp-heel draft-tube flow. The data bank has served as calibration data for the simulation challenge presented by the Turbine 99 workshop in Porjus in June 1999. LÄS MER

5. 4. An experimental study of the flow in a sharp-heel Kaplan draft tube

   Författare :Urban Andersson; Torbjørn K Nilsen; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningslära; Fluid Mechanics;

   Sammanfattning : This research project was originally part of a package (Turbine-99 Draft Tube) that had a mutual goal, to improve the understanding of draft tube flow and establish Best Practise Guidelines for simulation of draft tube flow.The draft tube is situated after the runner in a Hydropower turbine to recover as much of the remaining head and kinetic energy as possible before the water leaves the turbine. LÄS MER

7. 5. On Turbulence Modelling for Bilge Vortices: A Test of Eight Models for Three Cases

   Författare :Urban Svennberg; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wake; turbulence modelling; nonlinear eddy-viscosity model; bilge vortices; ship flow; jet; Navier-Stokes equation; two-equation model; Reynolds stress model; vortex;

   Sammanfattning : This work is a test, in three steps, of turbulence models for the calculation of the flow field around ships. Eight models ranging from k-e and k-w models to a Reynolds-stress model (RSM) are tested. LÄS MER