Sökning: "transport barriers"

Visar resultat 1 - 5 av 137 avhandlingar innehållade orden transport barriers.

1. 1. Collisional transport in edge transport barriers and stellarators

   Författare :Stefan Buller; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fusion; tokamak; plasma physics; stellarator; impurity transport; collisional transport; transport; pedestal;

   Sammanfattning : Nuclear fusion has the potential to generate abundant and clean energy. In magnetic confinement fusion, the temperatures needed to achieve fusion are obtained by confining a hot plasma with magnetic fields. LÄS MER

3. 2. Turbulent and neoclassical transport in tokamak plasmas

   Författare :Istvan Pusztai; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; thermonuclear fusion; tokamaks; microinstabilities; transport analysis; isotope effect; impurity transport; neoclassical transport; transport barriers; turbulent transport;

   Sammanfattning : One of the greatest challenges of thermonuclear fusion is to understand, predict and to some extent control particle and energy transport in fusion plasmas. In the present thesis we consider theoretical and experimental aspects of collisional and turbulent transport in tokamak plasmas. LÄS MER

4. 3. Transport Barriers in Plasmas and Fluids

   Författare :Robert Moestam; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; DNS; transport barriers; Zonal flows; L-H mode transition; turbulence simulations; drift waves; flux tube simulations; nonlinear instabilities; linear instabilities;

   Sammanfattning : In the present work different mechanisms for generation and suppression of turbulence are studied. The suppression of nonlinearly generated turbulence stabilized by temperature boundary conditions as well as turbulence generated by linear instabilities and suppressed by nonlinearly generated secondary flows are treated. LÄS MER

5. 4. Transport barriers in plasmas and fluids

   Författare :Robert Moestam; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LES; drift waves; transport barriers; vortex equation; linear instabilities;

   Sammanfattning : .... LÄS MER

7. 5. Den gemensamma transportpolitiken : Elimineringen av hinder för de gränsöverskridande vägtransporterna inom den Europeiska Gemenskaperna 1958-1992

   Författare :Juan Bergdahl; Uppsala universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economic history; European Community; Common Transport Policy; road transport; infrastructure; institutional theory; Ekonomisk historia; Economic history; Ekonomisk historia; Ekonomisk historia; Economic History;

   Sammanfattning : This dissertation analyses the European Community's political efforts to eliminate barriers to Community road transport between and within the member states. In this context, the study concentrates on the Community's activities to remove barriers to market access, such as limitations to the freedom to provide transport services, and pshysical barriers such as infrastructure capacity restrictions, checks and inspections at Community internal borders. LÄS MER