The Climate chamber system is an essential facility for aerodynamic performance development of commercial vehicles to investigate air flow field characteristics in different climatic conditions. In particular, the analysis of airflow fields within the chamber system is an essential consideration for optimal design. In this study, the pressure characteristics and velocity uniformity in the test section area were predicted with blower impeller rotational speed using CFD. The velocity uniformity is affected by the distance from the blower nozzle outlet, reaching up to 72.7% at 695 RPM. The pressure differential between 300 RPM and 740 RPM shows an approximate difference of 2651 Pa, with a high-pressure distribution observed along the right side wall of the blower. These results are expected to be used as design data applicable for improving the performance of environmental chamber systems.

Abstract
1. 서 론
2. 전산해석
    2.1 지배방정식
    2.2 해석방법 및 경계조건
    2.3 해석모 델링 및 격자시스템
3. 결과 및 토론
    3.1 환경 챔버 내 유동특성 분석
    3.2 환경 챔버 내 유속균일도 및 압력특성분석
4. 결 론
후 기
References

• 공병진(Master course, Dept. of Mechanical Engineering, Wonkwang University) | Byeong-Jin Kong
• 박다인(Ph. D. Student, Dept. of Mechanical Engineering, Wonkwang University) | Da-In Bak
• 이상호(Dept. of Mechanical Engineering, Wonkwang University) | Sang-Ho Lee Corresponding author