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국내 최대 정보 기계·건설 공학연구정보센터
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  • 시편연마기 Minitech 233~365 series
  • 국내학술지

    13 0
    국내학술지 제목 게시판 내용
    제목(국문) Point-Collocation Non-intrusive Polynomial Chaos 기법을 활용한 평판 주위 난류 유동장 해석
    제목(영문) TURBULENT FLOW SIMULATION AROUND FLAT PLATE BASED ON POINT-COLLOCATION NON-INTRUSIVE POLYNOMIAL CHAOS METHOD
    저자 장경식 (J.K.S ,울산대학교 기계공학부 ) ▷공저자네트워크등록하기
    고아림 (A.R. Ko ,한서대학교 항공시스템대학원 ) ▷공저자네트워크등록하기
    초록
    초록(영문)

    In the present work, uncertainty quantification based on the point-collocation Non-intrusive Polynomial
    Chaos was studied in turbulent flow around the flat plate using Menter 's SST k-m model. Two random variables
    of fl, model coefficient of Menter's SST k-m model and U00 , the freestream velocity are considered fl, model
    coefficient was assumed to be uniformly distributed and the freestream velocity U00
    , normally distributed with a
    certain value of variance. First, the uncertainty quantification with the single random variable of each one was
    simulated for sensitivity analysis of each parameter on the outputs such as drag coefficient and skin friction one.
    When the normal distribution of freestream velocity is considered, the drag coefficient showed the same type oj
    distribution with 0.9% standard deviation. The uniform distribution of ff with the internals of 0.0784 and 0.1024
    had an effect on 5% variance on drag coefficient. When two random variables are considered simultaneously, the
    distribution of drag coefficient showed closer type with one of model coefficient (3*. The convergence rate of mean
    value was late than that with single random variable and standard deviation was not converged until the 5th
    order of gPC.

    keyword Uncertainty Quantification, Non-Intrusive Polynomial Chaos, Flat Plate Flow, SST k-w model, Turbulence modeling
    저널명 한국전산유체공학회지 ▷관련저널보기
    VOL 23
    PAGE 0094
    발표년도 2018
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