AAAR 37th Annual Conference October 14 - October 18, 2019 Oregon Convention Center Portland, Oregon, USA
Abstract View
A Multiscale Study of Soot Morphology and Evolution in Combustion Devices
KHALED MOSHARRAF MUKUT, Eirini Goudeli, Somesh Roy, Marquette University
Abstract Number: 435 Working Group: Combustion
Abstract Soot morphology is an important factor which affects the aging of soot particles in and outside of a combustion device. The current study investigates potential effects of different factors such as temperature, pressure, exhaust gas recirculation (EGR), etc. on soot morphology in a high-pressure spray combustion configuration. A stochastic soot model is used to model the soot formation in engine combustion network’s (ECN) constant volume combustion chamber with n-dodecane fuel. The soot aggregates are quantified by different parameters such as surface area, volume, fractal dimension, collision diameter, C/H ratio, etc. at different locations during different stages of combustion to investigate the morphological evolution of soot particles. Different stages of soot formation will also be investigated from a first-principal point of view using reactive molecular dynamics simulations. The results from combustion CFD at the device scale and molecular dynamics at microscale will be carefully analyzed and compared to gain a better understanding of the process of soot evolution in combustion devices.