AN OBJECTIVE METHOD FOR DETERMINING THE GENERALIZED TRANSPORT. TENSOR FOR TWO-DIMENSIONAL EULERIAN MODELS

An objective method for deriving the components of a generalized transport tensor for a two-dimensional model is presented. The method used representative meridional and vertical velocities and thermodynamic scalars at a uniform grid to reduce the problem to solving two flux equations for two unknowns. One unknown is the stream function, coefficient of an antisymmetric tensor, which corrects the Eulerian mean motions for Stokes drift. The other is a time constant, which converts the deviatory velocity tensor (Reynold's stress tensor for temporal averaging) to a symmetric transport tensor. The complete asymmetric tensor is called a transport rather than a diffusion tensor because its divergence yields both advection and diffusion by the deviatory velocities. Advantages and disadvantages of Lagrangian and Eulerian averages are also discussed. (Author)

• Corporate Authors:

  Oregon State University, Corvallis

  Corvallis, OR  United States  97331

  Federal Aviation Administration

  800 Independence Avenue, SW
  Washington, DC  United States  20591
• Authors:
  • Danielsen, E F
  • Hipskind, R S
• Publication Date: 1980-8-15

Media Info

• Pagination: 70 p.

Subject/Index Terms

• TRT Terms: Fourier analysis; Grids (Coordinates); Lagrangian functions; Mathematical models; Tensor analysis; Time; Transport properties (Physics); Wind
• Uncontrolled Terms: Transport properties; Two dimensional
• Subject Areas: Materials;

Filing Info

• Accession Number: 00328217
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FAA/EE-80-32
• Contract Numbers: DOT-FA77WA-3992
• Files: NTIS, USDOT
• Created Date: Mar 12 2003 12:00AM