• 제목/요약/키워드: 콜부르크-화이트 방정식

검색결과 1건 처리시간 0.014초

콜부르크-화이트 방정식의 수치해와 이의 적용 (Numerical Solution of Colebrook-White Equation and It's Application)

  • 김민환;송창수
    • 상하수도학회지
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    • 제19권5호
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    • pp.613-618
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    • 2005
  • In analysis of pipelines or pipe network we calculated the friction loss using Hazen-Williams or Manning formula approximately, or found one by friction coefficient from Moody diagram graphically. The friction coefficient is determined as a function of relative roughness and Reynolds number. But the calculated friction coefficient by Hazen-Williams or Manning formula considered roughness of pipe or velocity of flow. The friction coefficient in Darcy-Weisbach equation was obtained from the Moody diagram. This method is manual and is not exact from reading. This paper is presented numerical solution of Colebrook-White formula including variables of relative roughness and Reynolds number. The suggested subroutine program by an efficient linear iteration scheme can be applied to any pipe network system.