In this study, a computational work to investigate the influence of a turbulent wake flow by a rectangular prism with different aspect ratio, which is installed at the inlet of a diffuser. The k-ω model was adopted to simulate the turbulence. The continuity and time averaged Navier-stokes equations were solved by a implicit finite volume scheme. The computational results are qualitatively well compared to existing experimental data by PIV. The results show that the velocity recovery of the subsonic diffuser is dependent on the aspect ratio of rectangular prism.

Abstract
 1. 서론
 2. 수치실험
 3. 결과 및 고찰
 4. 결론
 참고문헌

• 이철재(동명대학교 자동차공학과) | Cheol-Jae Lee
• 조대환(목포해양대학교 기관시스템공학부) | Dae-Hwan Cho