Sökning: "secondary transfer effects"

Visar resultat 1 - 5 av 39 avhandlingar innehållade orden secondary transfer effects.

1. 1. Numerical and Experimental Investigations of Design Parameters Defining Gas Turbine Nozzle Guide Vane Endwall Heat Transfer

   Författare :Frank G. Rubensdörffer; Torsten Fransson; Albin Bölcs; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Turbomachinery; secondary flow; endwall heat transfer; linear cascade test facility; CFD; RANS; V2F turbulence model; combustion chamber nozzle guide vane interface; heat shield; cavity; cooling air; Mechanical energy engineering; Mekanisk energiteknik;

   Sammanfattning : The primary requirements for a modern industrial gas turbine consist of a continuous trend of an increasing efficiency combined with very low emissions in a robust, cost-effective manner. To fulfil these tasks a high turbine inlet temperature together with advanced dry low NOX combustion chambers are employed. LÄS MER

3. 2. Heat Transfer and Fluid Flow Investigations in Ribbed Ducts and Impinging Jets Using Liquid Crystal Thermography and PIV

   Författare :Xiufang Gao; Värmeöverföring; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Thermal engineering; applied thermodynamics; Termisk teknik; termodynamik; Particle Image Velocimetry PIV .; Liquid Crystal Thermography LCT ; secondary flow; impinging jets; Enhanced heat transfer; ribbed ducts;

   Sammanfattning : This thesis presents experimental investigations of local heat transfer and detailed flow measurements in ribbed rectangular ducts and impinging jets. The advanced measurement methods, Liquid Crystal Thermography (LCT) and Particle Image Velocimetry (PIV) are adopted to provide full field characteristics. LÄS MER

4. 3. It's who you know and what you know : exploring the relationship between education and prejudice in adolescence

   Författare :Lena Werner; Mikael Hjerm; Ingemar Johansson Sevä; Maureen A. Eger; Pieter Bevelander; Umeå universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; anti-immigrant attitudes; education; critical thinking; multicultural education; teacher qualification; intergroup contact theory; secondary transfer effects; friendship; Sociology; sociologi;

   Sammanfattning : Background: Previous studies have consistently identified an association between higher levels of education and lower levels of anti-immigrant sentiment, but the underlying reasons for this relationship remain unclear. Therefore, this research aims to help explain why education matters for attitudes toward immigrants. LÄS MER

5. 4. Influence of Bridge Structures on the Electron Transfer in Donor-Acceptor Systems

   Författare :Mikael Winters; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; molecular wire; electron transfer; porphyrin; conjugated oligomer;

   Sammanfattning : In this Thesis, porphyrin-based donor-acceptor systems have been used to study photoinduced electron transfer processes. Principally, two different sets of systems have been investigated. LÄS MER

7. 5. Energy Transfer Processes and Quenching Pathways in Lanthanide Complexes: The Role of Structural Changes

   Författare :Daniel Kocsi; K. Eszter Borbas; Raphaël Tripier; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; lanthanide; luminescence; sensitisation; quenching; electron transfer; organic chromophores; fluorination; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi; Chemistry with specialization in Organic Chemistry; Kemi med inriktning mot organisk kemi;

   Sammanfattning : Due to their unique magnetic and luminescent properties, trivalent lanthanides (Ln(III)) have been widely utilised in cellular imaging. Ln(III) luminescence is usually sensitized by a light-harvesting ‘antenna’, a chromophore that can transfer the excitation energy to the Ln(III). LÄS MER