Sökning: "premixed stratified turbulent combustion"
Visar resultat 1 - 5 av 8 avhandlingar innehållade orden premixed stratified turbulent combustion.
1. Extension of OpenFOAM Library for RANS Simulation of Premixed Turbulent Combustion
Sammanfattning : Unsteady multi-dimensional numerical simulation of turbulent flames is a well recognized tool for research and development of future internal combustion engines capable for satisfying stringent requirements for ultra-low emission and highly efficient energy conversion. To attain success, such simulations need, in particular, well elaborated Computational Fluid Dynamics (CFD) software, as well as advanced predictive models of turbulent burning. LÄS MER
2. On the Modeling of Premixed Combustion under Varying Equivalence Ratios
Sammanfattning : This thesis deals with numerical simulation of reactive flows. The numerical method is three dimensional and unsteady, which allows for spatial and temporal resolution of most of the scales of the fluid motion and the reaction process. In the turbulent cases studied, scales down to Taylor scales are resolved. LÄS MER
3. Numerical Modelling of Fuel Injection and Stratified Turbulent Combustion in a Direct-Injection Spark-Ignition Engine Using an Open Source Code
Sammanfattning : Stringent regulations on the emission of pollutants, especially carbon dioxide (CO2), necessitate the development of advanced combustion technologies. Gasoline direct injection (GDI) into the combustion chamber of a Spark Ignition (SI) engine is a combustion strategy that is widely recognized as having the potential to improve fuel efficiency of internal combustion engines for passenger cars. LÄS MER
4. Large eddy simulation of combustion using linear-eddy subgrid modeling
Sammanfattning : As emissions regulations are getting stricter and efficiency requirements of internal combustion engines (ICE) are increasing, different concepts to improve combustion are being investigated. For example lean stratified premixed combustion, homogeneous charge compression ignition (HCCI), use of more exhaust gas recirculation (EGR) to reduce NOx etc. LÄS MER
5. A representative interactive linear-eddy-model (RILEM) for simulating spray combustion
Sammanfattning : Engine development aims at reducing pollutant emissions (e.g. NOx , soot,UHC) while maintaining high efficiencies. Detailed experimental resultsin combination with precise numerical predictions are of great importancein order to develop combustion systems for new clean and efficient inter-nal combustion engines. LÄS MER