한국추진공학회지 (Journal of the Korean Society of Propulsion Engineers)

  • 제23권4호
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  • Pages.28-34
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  • 2019
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  • 1226-6027(pISSN)
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  • 2288-4548(eISSN)
한국추진공학회 (The Korean Society of Propulsion Engineers)
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후퇴익형 형상의 와류발생기가 있는 핀휜 유동의 전열 및 유동 특성 분석에 관한 수치적 연구

Numerical Study on Heat Transfer and Flow Characteristics of Pin Fin with Swept Airfoil Shape Vortex Generator

  • Lee, Changhyeong (Department of Aerospace Engineering, Pusan National University) ;
  • Oh, Yeongtaek (Department of Aerospace Engineering, Pusan National University) ;
  • Bae, Jihwan (Department of Aerospace Engineering, Pusan National University) ;
  • Lee, Deukho (Department of Aerospace Engineering, Pusan National University) ;
  • Kim, Kuisoon (Department of Aerospace Engineering, Pusan National University)
  • 투고 : 2018.12.24
  • 심사 : 2019.05.23
  • 발행 : 2019.08.01
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⟨ 이전 논문 다음 논문 ⟩

초록

본 연구에서는 터빈 냉각에 널리 사용되는 핀-휜 배열에 대한 연구를 진행하였다. 본 연구에서 원형 튜브 전방에 익형 와류발생기가 위치하며, 익형 단면 형상은 NACA-9410을 사용하였다. 본 논문에서는 와류 발생기가 있는 핀-휜 배열 유동의 전열 성능과 유동 특성을 수직인 방향으로 변화시키며 기존의 핀-휜 유동과 비교하였다. 레이놀즈수 영역은 6000, 10000 그리고 15000 세 가지를 계산하였다. 전산 해석은 상용 프로그램인 ANSYS v18.0 CFX, 난류 모델은 $k-{\omega}$ SST를 사용하였다. 결과적으로 전열 성능은 최대 5.8% 증가하였고 압력 손실은 1% 미만으로 증가하였다.

In this study, pin-fin arrays, which are widely used for cooling turbine blades, were studied. The vortex generator in pin-fin arrays is located in front of the circular tube. The cross-section of the vortex generator is NACA-9410. The purpose of this study is to analyze heat transfer performance and flow characteristics of pin-fin arrays. The position of vortex generator is changed with the vertical flow direction on the bottom wall. Pin-fin arrays were calculated with 6000, 10000 and 15000 Reynolds number. The commercial program ANSYS v18.0 CFX and the turbulence model $k-{\omega}$ SST were used. As a result, the heat transfer performance increased up to 5.8% and pressure loss increased less than 1%.

키워드

참고문헌

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