Marine Boundary Layer Intermittency

Abstract

The authors created a version of Chin-Hoh Moeng's NCAR LES code that is more memory efficient, hence allowing us to run larger simulations. We simulated nearly neutral marine boundary layers having a horizontal domain size of 15 km on a side, and an inversion height of 500 m. The runs used about 400 hours of Cray supercomputer time. The LES code was also run on a smaller, 3 km horizontal domain, with 192 cubed grid points. With 15 m resolution in the horizontal, and 5 m in the vertical, these simulations have higher resolution than any previous atmospheric LES. EOF analysis was applied to LES fields which had been Fourier transformed in the horizontal coordinates. The method provides information on the vertical structure of the turbulence as a function of horizontal length scale.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1994
Accession Number
ADA275417

Entities

People

  • John C. Wyngaard

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Boundary Layer Flow
  • Equations
  • Flow
  • Grids
  • Heat Flux
  • Large Eddy Simulation
  • Layers
  • Models
  • Physics
  • Scale Models
  • Simulations
  • Stratified Fluids
  • Turbulence
  • Turbulent Flow
  • Wavelet Transforms

Readers

  • Calculus or Mathematical Analysis
  • Computational Fluid Dynamics (CFD)
  • Ocean-Atmosphere Mesoscale Modeling, Data Assimilation, and Flux Boundary Layers