• Title/Summary/Keyword: Modified Garabedian-McFadden method

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The Inverse Design Technique of Propeller Blade Sections Using the Modified Garabedian-McFadden Method (Modified Garabedian-McFadden 방법을 이용한 프로펠러 날개 단면의 역설계 기법)

  • C.M. Jung;J.K. Cho;W.G. Park
    • Journal of the Society of Naval Architects of Korea
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    • v.36 no.4
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    • pp.28-36
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    • 1999
  • An efficient inverse design method based on the MGM(Modified Garabedian-McFadden) method has been developed. The 2-D Navier-Stokes equations are solved for obtaining the surface pressure distributions and coupled with the MGM method to perform the inverse design. The MGM method is a residual-correction technique, in which the residuals are the difference between the desired and the computed pressure distribution. The developed code was applied to several airfoil shapes and the propeller. It has been found that they are well converged to their targeting shapes.

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The Inverse Design Technique of Axial Blade Using the Parallel Calculation (병렬 연산을 이용한 축류 블레이드의 역설계)

  • Cho, J. K.;Ahn, J. S.;Park, W. G.
    • 유체기계공업학회:학술대회논문집
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    • 1999.12a
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    • pp.200-207
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    • 1999
  • An efficient inverse design technique based on the MGM (Modified Garabedian-McFadden) method has been developed. The 2-D Navier-Stokes equations are solved for obtaining the surface pressure distributions and coupled with the MGM method to perform the inverse design. The solver is parallelized by using the domain decomposition method and the standard MPI library for communications between the processors. The MGM method is a residual-correction technique, in which the residuals are the difference between the desired and the computed pressure distribution. The developed code was applied to several airfoil shapes and the axial blade. It has been found that they are well converged to their target pressure distribution.

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An Inverse Design for Nose Shape of a Cylindrical-Shaped Submerged Body (원통형 수중운동체 두부 형상 역설계)

  • Jung Chul-Min
    • Journal of the Korea Institute of Military Science and Technology
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    • v.7 no.3 s.18
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    • pp.69-76
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    • 2004
  • In this paper, an efficient inverse design method for nose shape of submerged body based on the MGM(Modified Garabedian-McFadden) design method has been developed. The MGM design method is a residual-correction technique, in which the residuals are differences between the desired and the computed pressure distributions. 3-D incompressible Wavier-Stokes equation was adopted for obtaining the surface pressure distribution and combined with the MGM design method to perform the inverse design of nose shape of submerged body. The design method was verified by applying to several airfoil shapes. Improved design shapes could be obtained when the method was applied to nose shapes of submerged body.