본 연구에서는 conchas-spray 코드를 근간으로 하여 기관 실린더 내의 난류유 동과 난류연소 현상을 경제적이고 정확하게 해석할 수 있는 다차원 수치해석 프로그램 을 개발하므로, 전기점화 기관의 흡입, 압축, 연소 과정에 대한 수치해석의 가능성을 제시하고, 스월수 0.0, 0.6, 1.2와 2.4의 파라미터 연구를 통하여 스월이 난류유동 및 난류연소에 미치는 영향을 파악하였다.
A multidimensional simulation of turbulent flow and combustion with swirl in the cylinder of SI engine is implemented to clarify the effects of swirl. present simulation employs the ICED-ALE numerical technique, the skew-upwind difference scheme, a modified k_.epsilon. turbulence model, a combustion model of Arrhenius type and turbulence-mixing-control type. First, the calculations for swirling flow in an axisymmetric cylinder are carried out. The results are compared with the experimental data to validate the numerical analysis. Second, the calculations for intake, compression and combustion processes in an axisymmetric cylinder are performed. The effects of swirl on turbulent flow and combustion are examined through the parametric study of swirl number 0.0, 0.6, 1.2 and 2.4. As a result, it is numerically shown that the turbulent kinetic energy and the swirl velocity, which are produced during the intake process, affect the combustion process.
