Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Numerical Models for Atmospheric Diffusion Phenomena by Pseudospectral Method(2) : Spectral Model for a Hilly Terrain of Real Scale

의사스펙트로법에 의한 대기확산현상의 수치모델(2): 실규모의 복잡지형에서의 스펙트로모델

  • 김선태 (대전대학교 공과대학 환경공학과)
  • Published : 1993.09.01
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Abstract

Theoretically, spectral method has the highest accuracy among present numerical methods, but it is generally difficult to apply to complex terrains because of complex boundary conditions. Recently, spectral-element method, basically divide the domain into a set of rectangular subdomain and solve the equation at each subdomain, has been introduced. However, boundary conditions become more complex and requires more computing time, thus spectral-element method is not powerful for all complex terrain problems. In this paper, potential flow theory was intorduced to solve the air flows and diffusion phenomenon in the presence of terrain obstacles. Using the velocity potential-stream line orthogonal coordinate space, the diffusion problems of hilly terrain by pseudospectral method were solved and compared those with no terrain real scale solutions.

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References

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