스퀴시 형상 변경에 따른 DOHC 엔진에서의 압축 과정 유동 특성 해석 = In-cylinder Flow Analysis during Compression Process of DOHC Engine for Different Squish Configurations

다국어 초록 (Multilingual Abstract)

The numerical analysis on three-dimensional, unsteady in-cylinder flow of a DOHC spark-ignition engine has been applied to understand the in-cylinder flow patterns for three kinds of squish configurations. Calculations were carried out with CRI/TurboKiva, <br/>
a commercial engine CFD code that can effectively solve the equations for transient chemically reactive fluid flows. The spatial structure and temporal evolution of in-cylinder flow fields during compression stroke have been investigated. The evolution of in-cylinder flow patterns for different squish configurations from IVC to spark timing was mainly discussed at specified crank angles. Mean velocity and turbulent kinetic energy level at the spark location were also obtained with respect to each crank angle. Through this study, it is possible to get the fundamental data involved in the in-cylinder flow structure and physical insight into the desirable squish flow patterns at spark timing for later combustion period.<br/>

목차 (Table of Contents)

• ABSTRACT
  
• 1.서 론
  
• 2.엔진 모델링 및 격자 생성
  
• 3.수치 해석 방법
  
• 4.결과 및 토론
  
• 5.결 론
  
• 6.참 고 문 헌