Accession Number : ADA251448


Title :   Numerical Simulation of Permeation from Deposited Droplets: Model Expansion


Descriptive Note : Final rept.


Corporate Author : ARMY LAB COMMAND WATERTOWN MA MATERIAL TECHNOLOGY LAB


Personal Author(s) : Severe, Geralda ; Meldon, Jerry H


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a251448.pdf


Report Date : Apr 1992


Pagination or Media Count : 75


Abstract : A previously published model of permeation from a droplet has been expanded. Effects of downstream mass transfer resistance and concentration dependence of the diffusion coefficient have been included. An attempt was made to fit experimental results for the permeation of di-iso-propyl-methyl- phosphonate (DIMP) through Neoprene and natural rubber. Simulated data do not reproduce the initial pronounced delay of experimental permeation. Furthermore, no rationale has been identified for the anomalous dependence of breakthrough time upon barrier thickness observed with several experimental systems.


Descriptors :   *MATHEMATICAL MODELS , *COMPUTERIZED SIMULATION , *DROPS , *PHOSPHONATES , *PENETRATION , SIMULATION , THICKNESS , MODELS , COMPUTERS , BARRIERS , NATURAL RUBBER , NEOPRENE , DIFFUSION COEFFICIENT , DIFFUSION , DELAY , MASS TRANSFER , COEFFICIENTS , FLUX(RATE) , MASS , RESISTANCE , RUBBER , DIES


Subject Categories : Organic Chemistry
      Operations Research


Distribution Statement : APPROVED FOR PUBLIC RELEASE