DOI QR코드

DOI QR Code

2차원 지면 효과에 대한 난류 유동장 해석 Part I. 중첩 격자 기법 적용에 대한 연구

Turbulent Flow Simulations on 2-Dimensional Ground Effect Part I. Verification on the Overlap Grid Method

  • 김윤식 (한국해양연구원 해양시스템안전연구소) ;
  • 이재은 (한국과학기술원 항공우주공학전공 대학원) ;
  • 김유진 (한국과학기술원 항공우주공학전공 대학원) ;
  • 권장혁 (한국과학기술원 항공우주공학 전공)
  • 발행 : 2007.08.31

초록

지면효과에 대한 수치해석을 위한 격자생성 과정에서 발생하는 어려움을 해소하기 위하여 중첩격자 기법을 이용한 수치해석 기법의 타당성에 대한 연구를 수행하고 그 신뢰성을 검증하였다. 지면효과가 있는 경우와 없는 경우 RAE 101 익형주위의 저속 난류 유동장에 대한 수치해석을 수행하였고 다중블록격자 기법과 중첩격자 기법을 적용한 수치해석 결과를 실험결과와 비교하였다. 이를 통하여 중첩격자 기법을 이용함으로써 지면효과에 대한 수치해석과정을 정확하고 격자생성 문제없이 효과적으로 수행할 수 있음을 보였다.

Study on the feasibility assessment for applying the overlap grid method to numerical calculations on the ground effect has been performed. The objective of the present study is to settle the problem in the grid generation process. A low Mach number preconditioned turbulent flow solver using the overlap grid and the multi-block grid methods has been developed and applied to the ground effect simulation around the RAE 101 airfoil. It has been verified that the overlap grid method not only can provide sufficiently accurate solutions but also work out the grid generation problem in the ground effect simulations.

키워드

참고문헌

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