본문 바로 가기

로고

국내 최대 기계 및 로봇 연구정보
통합검색 화살표
  • Virtuous6D
  • 국내학술지

    292 0
    국내학술지 제목 게시판 내용
    제목(국문) Solid volume fraction이 20% 인 다공성 실린더 주위의 유동 해석
    제목(영문) NUMERICAL SIMULATION OF FLOW PAST A POROUS CYLINDER WITH 20% SOLID VOLUME FRACTION
    저자 장경식 (Kyoung Slk Chang ,한서대학교 항공기계학과 ) ▷공저자 네트워크 보기
    (G Constantinescu ,Assistant professor, University of Iowa IIHR ) ▷공저자네트워크등록하기
    초록

    -

    초록(영문)

     

    The presence of a layer of vegetation which is relevant in river engineering or coastal engineering can modify the overall flow resistance, turbulent characteristics of flow. The patch of vegetation can be modelled and studied in a simple porous cylinder by previous researchers. Fully three dimensional Large Eddy Simulation is conducted in flow past a porous cylinder with a solid volume fraction (SVP) of 20%. The porous cylinder of diameter D contains 89 smaller cylinders which diameter is 0.048D in a regular staggered way. Reynolds number based on porous cylinder diameter D and the bulk velocity is 10,000. The large scale shedding is qualitatively similar to the one observed in the non-porous case (SVF= I00%). The difference in the dynamics of the separated shear layer and the streamwise }low penetrating through the porous cylinder are compared with those in the non-porous cylinder. In particular, the wake billows form a larger distance from the back of the porous cylinder.
    keyword Large Eddy Simulation, Porous cylinder, Coherent structure, Separated Shear Layer
    대와류모사, 다공성 실린더, 응집 구조, 박리전단층
    저널명 한국전산유체공학회지 ▷관련저널보기
    VOL 17
    PAGE 87-98
    발표년도 2012
    원문파일 국문다운로드
    • 페이스북아이콘
    • 트위터 아이콘

    서브 사이드

    서브 우측상단1