SC3-3: Mixture Formation Process of Wall-Impinging Spray by D.I. Gasoline Injector : Comparison between Experiment and CFD Calculation(SC: Spray and Spray Combustion,General Session Papers)

概要

論文の詳細を見る
The spray-wall interaction is a key factor for optimizing the in-cylinder mixture formation and combustion of a direct injection (D.I.) gasoline engine. In this study, the laser absorption scattering (LAS) technique for non-axisymmetric sprays was newly developed based on the LAS for axisymmetric sprays. The LAS technique for non-axisymmetric sprays makes it possible to quantitatively measure the vapor and liquid distributions and their total mass in the spray. The influence of wall impingement on the evaporation process and the tip penetration of the spray injected by a hole-type injector were investigated. The experimental results were compared with the simulation results using three-dimensional computational fluid dynamics (CFD). The input variables of the spray sub-model parameters and injection conditions were optimized by the genetic algorithm, where the spray tip penetration and the mass of vapor phase obtained by the experiment was selected as objective functions. As for numerical analysis of the mixture formation process in the spray, the accuracy has been improved.
一般社団法人日本機械学会の論文
2008-07-28