03696cam a2200517Ii 4500102325939MiAaHDL20250726000000.0m d cr bn ---auaua090519e198006 maua bt f000 0 eng d(MiU)990161179200106381sdr-miu.990161179200106381(MiU)MIU01000000000000016117920-goog(OCoLC)326837208(MiU)Aleph016117920LHLengLHLOCLCFOCLCOOCLCQCODTRAALMAIND 301.45/39:707ADA 090340AFGL TR 80-186Dewan, Edmond M.,1931-http://id.loc.gov/authorities/names/n88011040http://id.loc.gov/rwo/agents/n88011040A One-dimensional vertical diffusion parameter for extremely inhomogeneous, layered turbulence in stratified fluids /Edmond M. Dewan.Hanscom AFB, Massachusetts :Air Force Geophysics Laboratory, Air Force Systems Command, United States Air Force,1980.51 pages :illustrations ;28 cm.texttxtrdacontentunmediatednrdamediavolumencrdacarrierAFGL-TR ;80-186Environmental Research Papers ;No. 707Research supported by the Air Force Geophysics Laboratory, Air Force Systems Command, United States Air Force, Hanscom AFB, Massachusetts.Aeronomy Division Project 6687.ADA090340 (from http://www.dtic.mil)."16 June 1980."Includes bibliographical references (pages 47-48).A self-consistent method of characterizing vertical turbulent transport by means of a diffusion parameter is demonstrated for the extremely inhomogeneous case of layered turbulence in a stratified fluid. Between the horizontal turbulent layers, horizontal laminar flow is assumed to occur, and molecular diffusion is ignored. The layers are assumed to occur at random heights with random thickness. An analogy is made between the process of random mixing layers and the finite difference representation of the diffusion equation. It is demonstrated by means of a series of digital computer experiments that, in the case where total mixing takes place within the turbulent layers, the diffusion parameter herein developed is the valid one to use (in contrast to 'eddy diffusivity'). The relation between this inhomogeneous diffusion parameter and practical experimental measurements is given. The motive behind this investigation involves vertical transport of pollution in the environment in general and in the stratosphere in particular.Mode of access: Internet.Turbulent diffusion (Meteorology)fasthttp://id.worldcat.org/fast/1159233Stratosphere.fasthttp://id.worldcat.org/fast/1134447Fluid dynamics.fasthttp://id.worldcat.org/fast/927973Differential equations.fasthttp://id.worldcat.org/fast/893446Computer simulation.fasthttp://id.worldcat.org/fast/872518Differential equations.http://id.loc.gov/authorities/subjects/sh85037890Computer simulation.http://id.loc.gov/authorities/subjects/sh85029533Stratosphere.http://id.loc.gov/authorities/subjects/sh85128527Fluid dynamics.http://id.loc.gov/authorities/subjects/sh85049376Turbulent diffusion (Meteorology)http://id.loc.gov/authorities/subjects/sh85138755U.S. Air Force Geophysics Laboratory.http://id.loc.gov/authorities/names/n79109638http://id.loc.gov/rwo/agents/n79109638Technical Report Archive & Image Library (TRAIL)3901509513965810232593920241218000345.020250726000000.020260310140653.02026-03-11T07:37:43Z2024-04-27T17:30:02ZSDR-MIUmiuALMAprepare.pl-004-009BKsdr-miu.990161179200106381MiUSDRGWLA016117920mdp.39015095139658MIU990161179200106381MIUGWLA20260311googlemdp.390150951396581980pdbibUS fed doc