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Technical Report NTB 85-37

Me. TRAD - 2 D A multiple coordinate computer code for calculation of transport by diffusion in two dimensions

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A computer code for the modelling of heat conduction or diffusive mass transport has been produced for use in the safety analysis of radioactive waste repositories.

MC.TRAD-2D (Multi-Coordinate Transport by Diffusion in 2-Dimensions) solves the diffusion equation in rectangular, cylindrical or polar plane coordinates. The code has been used in the analysis of heat dissipation from radioactive waste and in the study of near field nuclide migration.

The present report contains a technical description of the code, a user's manual describing input requirements and the full range of options and a verification study whereby the code's performance in solving a number of (thermal) test problems is compared with analytical solutions to the same problems.

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