Accession Number:

AD0653015

Title:

DERIVATION OF HYPERBOLIC TURBULENT DIFFUSION EQUATION

Descriptive Note:

Technical rept.

Corporate Author:

ARMY ELECTRONICS COMMAND FORT HUACHUCAAZ RESEARCH DIV

Personal Author(s):

• Meyers, Ronald E.

Report Date:

1967-05-01

Pagination or Media Count:

24.0

Abstract:

A three dimensional hyperbolic differential equation based on finite correlated particle velocities is derived which is appropriate to modeling anisotropic turbulent diffusion in the atmosphere. Cauchy initial data, the mean wind, the Reynolds stress tensor, and a typical frequency of pulsation are required for complete solution. The outlines of plumes and puffs may be obtained with only knowledge of the Reynolds stress tensor and mean wind velocity. The classical parabolic diffusion equations are a limiting form of this hyperbolic model.

Descriptors:

• *ATMOSPHERIC MOTION
• *THREE DIMENSIONAL FLOW
• VELOCITY
• WIND
• ANISOTROPY
• DIFFUSION
• ATMOSPHERE MODELS
• NUMERICAL METHODS AND PROCEDURES
• PARTIAL DIFFERENTIAL EQUATIONS
• PARTICLES
• TURBULENCE

Subject Categories:

• Atmospheric Physics
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE