Users Guide for the Program TAMDYN. A Modelling Tool for Use on Personal Computers to Simulate Environmental Transport of Contaminants

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    Recent developments in radioecology have ntressed the need for providing uncertainties associated with model predictions. Our aim was to get a flexible computer program to estimate these uncertainties even, for dynamic processes, and mainly for time-dependent solutions of compartmental systems. Therefore, we have combined the uncertainty analysis code TAM3 (written by R. H. Gardener, Oak Ridge National Laboratory, USA) and the code of RKF45 for integration of ordinary differential equations by the Runge-Kutta-Fehlberg method. The source program of TAM3 is written in Turbo Pascal for PC-computers and so is the present extension for dynamic systems. The structure of the compartmental system (number of compartments, non-zero transfer coefficients etc.) can be defined from the input data. The extension to dynamic systems includes an option to modify the values of the state variables and non-transfer parameters during the solution of the differential equations. The modifications are given in the input data and are useful for the simulation of contaminations, harvesting etc.
    Original languageEnglish
    Place of PublicationRoskilde
    PublisherRisø National Laboratory
    Number of pages30
    ISBN (Print)87-550-1457-7
    Publication statusPublished - 1988


    • Risø-M-2741

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