G. Montenegro

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A correct prediction of the ignition process represents a fundamental prerequisite for a successful CFD simulation of combustion SI engines. Ignition involves many scales, physical and chemical phenomena that need to be described in detail. Within this context, the authors developed a Lagrangian model that can be used to predict the first stages of the(More)
Efficiency improvement is one of the main challenges in all fields of design. The reduction of power losses is becoming a great concern also in the design of power transmissions. For this reason it is important to have specific models available in order to quantify the power losses during the design stage. The power losses of a gear transmission can be(More)
CFD simulation of the combustion process is very important for a correct prediction of both engine performance and pollutant emissions such as soot and NOx. However, combustion modeling involves many complex phenomena that need to be handled in detail. Among them, the most important ones are represented by initial flame kernel formation, flame propagation,(More)
A detailed analysis of mass non-conservation in the proximity of thermal contact discontinuities, when solving 1-D gas dynamic flow equations with finite difference numerical methods, is carried out in this paper. A wide spectrum of finite difference numerical methods has been applied to solve such conditions. Thermal contact discontinuities are very common(More)
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