한국군사과학기술학회지 (Journal of the Korea Institute of Military Science and Technology)

  • 제13권1호
  • /
  • Pages.164-169
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  • 2010
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  • 1598-9127(pISSN)
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  • 2636-0640(eISSN)
한국군사과학기술학회 (The Korea Institute of Military Science and Technology)
권호 표지

적합직교분해를 이용한 2차원 실린더 후류 유동장 분석 및 재구성

Analysis and Reconstruction of the 2-D Cylinder Wake Flow Using POD

  • 이희남 (순천대학교 기계우주항공공학부) ;
  • 김기희 (순천대학교 대학원)
  • 투고 : 2009.10.21
  • 심사 : 2010.01.08
  • 발행 : 2010.01.05
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초록

Proper Orthogonal Decomposition (POD) is applied to the analysis of 2-dimensional cylinder wake flow. Time histories of flow variables were obtained by the incompressible CFD analysis. By using the method of snapshots the correlation matrix was constructed, and then eigenvalues, POD modes and time coefficients were calculated. Finally the flow field was reconstructed by using a few of the lower POD modes, and compared to the original ones.

키워드

참고문헌

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  2. R. Holmes, J. Lumley, C. Buckwalter, "Turbulence, Coherent Structures, Dynamical Systems and Symmetry", Cambridge University Press, 1999.
  3. L. Sirovich and M. Kirby, "Low-dimensional Procedure for Characterization of Human Faces", J. Opt. Soc., Vol. 4, No. 3, pp. 519-524, 1987. https://doi.org/10.1364/JOSAA.4.000519
  4. 함희정, 김대곤, "POD 기법을 이용한 철골뼈대구조의 모드인자 파악", 대한건축학회논문집 구조계 제23권 제9호, pp. 23-30, 2007.
  5. CFD code SC/TETRA user's manual, http://www.cedic.biz