Sökning: "ignition delay time"
Visar resultat 1 - 5 av 15 avhandlingar innehållade orden ignition delay time.
1. Numerical Study on Combustion Features of Gasified Biomass Gas
Sammanfattning : There is a great interest to develop biomass combustion systems for industrial and utility applications. Improved biomass energy conversion systems are designed to provide better combustion efficiencies and environmental friendly conditions, as well as the fuel flexibility options in various applications. LÄS MER
2. Numerical Modelling of Diesel Spray Injection, Turbulence Interaction and Combustion
Sammanfattning : This thesis covers two main topics. The first is numerical modelling ofcavitating diesel injector flows, focusing on describing suchflows using asingle-phase cavitation model based on a barotropic equation of statetogetherwith a homogenous equilibrium assumption. LÄS MER
3. Homogeneous Ignition - Chemical Kinetic Studies for IC-Engine Applications
Sammanfattning : Calculations on a Homogeneous Charge Compression Ignition (HCCI) engine have been performed. Zero-dimensional models were used. The simplest model compressed the gas to auto-ignition, using temperature and pressure at a certain crank angle position obtained from engine experiments. LÄS MER
4. Learning control for flex-fuel CI engine and fuel cell
Sammanfattning : This thesis investigated the modeling and control problems in the context of the flex-fuel compression-ignition (CI) engine and fuel cell, which shows great potential in the transition from fossil fuel to renewable energy sources.The modeling parts included the flex-fuel engine combustion process and intake system, and the system scale fuel cell model. LÄS MER
5. Development of Transient Flamelet Library Based Combustion Models
Sammanfattning : Three different methods for Reynolds-averaged Navier-Stokes computational fluid dynamics modeling of non-premixed ignition and combustion using tabulated chemistry have been developed. All methods make use of flamelet libraries, where the flamelet auto-ignition process is parameterized using a progress variable. LÄS MER