Host: The Japan Society of Mechanical Engineers
Name : The Ninth International Conference on Modeling and Diagnostics for Advanced Engine Systems (COMODIA 2017)
Date : July 25, 2017 - July 28, 2017
Numerical calculations were carried out in order to investigate the mixture formation, ignition and combustion processes in a diesel spray impinging to wall. We modeled the spray formed by injecting n-heptane into a constant-volume vessel under high temperature and pressure. The fuel droplets were described by discrete droplet model. The flow and turbulent diffusion processes were calculated based on large eddy simulation in order to describe the processes of local non-homogeneous mixture formation and its heat release. We also investigated flame structure and heat transfer to the wall during the impingement process. Results show that heat transfer to the wall becomes larger, especially in the peripheral region around stagnation point because of the high temperature and thin boundary layer. In the outer region, the heat transfer decreases developing as the boundary layer becomes more developed.
