Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
권호 표지
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Oblique Angle Effect of Impinging Jet on Heat Flow Characteristics of a Corrugated Structure

충돌제트의 경사각도가 파형 구조의 열유동 특성에 미치는 영향

  • Hwang, Byeong Jo (School of Mechanical Engineering, Yonsei University) ;
  • Kim, Seon Ho (School of Mechanical Engineering, Yonsei University) ;
  • Joo, Won Gu (School of Mechanical Engineering, Yonsei University) ;
  • Cho, Hyung Hee (School of Mechanical Engineering, Yonsei University)
  • Received : 2016.12.20
  • Accepted : 2017.03.02
  • Published : 2017.04.01
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Abstract

A numerical analysis is made of the fluid flow and heat transfer characteristics in the corrugated structure that traps the spent air in the corrugations between impinging jets to reduce crossflow effects on downstream jets in the array. All computations are performed by considering three-dimensional, steady state, and incompressible flow by using the ANSYS-CFX 15.0 code. Averaged jet Reynolds number is 10,000. The oblique angles of impingement jets on the spanwise section are $70^{\circ}$, $80^{\circ}$, $90^{\circ}$, and the oblique angles of impingement jets on the streamwise section are $70^{\circ}$, $90^{\circ}$, $110^{\circ}$. The investigation focuses on the oblique angle influence of impinging jet array on the fluid flow and heat transfer characteristics of a corrugated structure.

파형 구조는 배열 충돌제트 하류에서의 횡방향 유동 영향을 줄이기 위해 충돌제트 사이의 파형 속에 사용된 냉각 공기를 유입시키며, 이러한 파형 구조에서의 유동 및 열전달 특성에 대해 수치해석을 수행하였다. 모든 계산은 3차원, 정상상태, 비압축성 유동으로 고려하였으며 ANSYS-CFX 15.0 코드를 사용하였다. 제트 홀에서 평균 Reynolds 수는 10,000이며, Spanwise 단면에서 충돌제트의 경사각도는 $70^{\circ}$, $80^{\circ}$ 및 $90^{\circ}$ 이고, Streamwise 단면에서 충돌제트의 경사각도는 $70^{\circ}$, $90^{\circ}$ 및 $110^{\circ}$ 이다. 본 연구에서는 배열 충돌제트의 경사각도가 파형 구조의 유동 및 열전달 특성에 미치는 영향에 대해 고찰하였다.

Keywords

References

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