다단 축류압축기의 표면조도가 성능에 미치는 영향

다국어 초록 (Multilingual Abstract)

This paper presents roughness effects on flow characteristics and efficiency of multi-stage axial compressor using numerical simulation, which is carried out with a commercially available software, CFX-TASCflow. In this paper, the third of four stages of GE low pressure compressor is considered including one stator and one rotor. Mixing-plane approach is adopted to model the interface between the stator and the rotor: it is appropriate for steady state simulation. First, a flat plate simulation was performed to validate how exact the numerical simulation predicts the roughness effect for smooth and rough walls. Then GE compressor model was calculated about at each roughness height. Concluding, very small roughness height largely affects the performance of compressor and the increasing rate of loss decrease as roughness height increase.

목차 (Table of Contents)

• ABSTRACT
  
• 1. 서론
  
• 2. 연구방법
  
• 3. 수치해석 결과 및 고찰
  
• 4. 결론
  
• 후기
  
• 참고문헌