Earticle

초록

영어

In this study, infrared thermometry techniques were used to conduct surface wetting performance tests (wicking tests) on micropillar structures with good fluid supply capabilities to enhance the critical heat flux. Wicking tests were conducted based on various micropillar shapes (i.e., diameter and spacing) to investigate the surface wetting performance near the boiling point of the fluid(~100°C). The surface temperature was increased from 20°C to 95°C, to examine the wicking performance The shape of the micropillars were quantified by the roughness and the effect of the roughness and temperature on the wicking performance was analyzed. As a result, we confirmed that the roughness of the micropillars increases the capillary pressure, improving the wicking performance. The sample D04 G10 with the highest roughness coefficient at room temperature (r=2.51) exhibited the highest wicking coefficient, showing a 170% improvement in wicking performance compared to D04G20 with the smallest roughness coefficient at room temperature(r=1.51). Additionally, the D04 G10 sample (r=2.51) recorded a 50% improvement in the wicking coefficient at the highest temperature(95°C) compared to room temperature(20°C). The wicking coefficient data will be utilized as a database for developing a new correlation for critical heat flux.

목차

ABSTRACT
1. 서론
2. 연구방법
2.1  마이크로 필라 제작 방법
2.2 위킹 시험
2.3 데이터 분석 및 불확실도
3. 결과
3.1 마이크로 필라에서의 위킹 특성
3.2 마이크로 필라에서 형상에 따른 위킹 특성
3.3 마이크로 필라에서 온도에 따른 위킹 특성요약 및 비등열전달 활용방안
4. 결론
References

키워드

저자

• 이유명 [ Yoo-Myeong Lee ]
• 박현묵 [ Hyun-Muk Park ]
• 남현택 [ Hyeon-Taek Nam ]
• 김용현 [ Yong-Hyeon Kim ]
• 이동휘 [ Dong-Hwi Lee | Jeonbuk National University ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국기계항공기술학회지(구 한국기계기술학회지) [Journal of the Korean Society of Mechanical and Aviation Technology ]

• 간기

  격월간

• pISSN

  1229-604X

• eISSN

  2508-3805

• 수록기간

  1999~2026

• 등재여부

  KCI 등재

• 십진분류

  KDC 550 DDC 620