Sökning: "Sprays"

Visar resultat 21 - 25 av 79 avhandlingar innehållade ordet Sprays.

1. 21. LES of Jets and Sprays Injected into Crossflow

   Författare :Mirko Salewski; Strömningsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gaser; fluid dynamics; large eddy simulation; spray; plasmas; Gases; lagrangian particle tracking; jet in crossflow; fluiddynamik; plasma;

   Sammanfattning : The objective of this thesis is to numerically simulate a fluid jet injected into a crossflow of the same or another fluid, respectively. Such flows are encountered in many engineering applications in which cooling or mixing plays an important role, e.g. gas turbine combustors. LÄS MER

3. 22. Experimental characterization of spray-guided gasoline DI sprays

   Författare :Mikael Skogsberg; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : .... LÄS MER

4. 23. Experimental Investigation of Impinging Diesel Sprays for HCCI Combustion

   Författare :Fredrik Wåhlin; Hans-Erik Ångström; José Javier López Sánchez; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering mechanics; Teknisk mekanik;

   Sammanfattning : Engine research and development is to a large extent driven by the quest of lowering exhaust emissions and fuel consumption. The combination of low emissions and low fuel consumption is not the simultaneous characteristic of the world’s primary engine concepts, the diesel and the spark-ignited (SI) engine. LÄS MER

5. 24. Hollow cone gasoline/ethanol sprays under cold start conditions

   Författare :Jonas Wärnberg; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SIDI; Cold start; PIV; Piezo-injector; PDA; Ethanol; SI; SGDI; E85; Direct injection stratified charge; LIF; Spark ignition; Mie;

   Sammanfattning : To decrease the release of CO2 from fossil fuels into the atmosphere, within the transportation sector the efficiency of vehicles and their engines must be increased. Additionally renewable fuels may be used to further decrease our reliance on fossil fuels. LÄS MER

7. 25. Numerical Studies of Methanol PPC Engines and Diesel Sprays

   Författare :Mateusz Pucilowski; Strömningsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Methanol; Partially Premixed Combustion PPC ; spray-wall interaction; piston geometry; multiple injections; ICE; ignition front; diffusion flame; combustion mode; RANS; LES; PPC; Diesel spray;

   Sammanfattning : The global environment suffers from utilizing fossil fuels to powering internal combustion engines (ICE), due to the massive amounts of released CO2. Besides the global impact, the local environments experience high concentrations of harmful pollutants such as NOx, CO, soot and particulate matter (PM). LÄS MER