SIMTRAN I: a computer code for the simultaneous calculation of oxygen distributions and temperature profiles in Zircaloy during exposure to high-temperature oxidizing environments

SIMTRAN I is a Fortran IV computer program written for the IBM 360/91 system which solves SIMultaneously the TRANsport equations for both heat and mass flow for the one-dimensional, multiphase, moving-boundary, transient-temperature transport problem in a finite-geometry system defined by cylindrical coordinates. The code utilizes an ideal diffusion model which requires uniform layer growth of all phases and assumes the existence of thermodynamic equilibrium at all interfaces at all times. While SIMTRAN was constructed specifically for the consideration of oxidation phenomena during the reaction of Zircaloy fuel tubes with steam under high-temperature transient oxidation conditions, only minor changes are necessary to make it generally applicable to other materials and a number of oxidation, diffusion, and heat-transfer problems. A variety of boundary-condition options permit the mathematical simulation of a wide range of oxidation experiments. The basic operational input to the code, which must include physical property, thermodynamic, and kinetic data over the desired temperature range, was selected from a variety of literature sources

SIMTRAN I: a computer code for the simultaneous calculation of oxygen distributions and temperature profiles in Zircaloy during exposure to high-temperature oxidizing environments

SIMTRAN I is a Fortran IV computer program written for the IBM 360/91 system which solves SIMultaneously the TRANsport equations for both heat and mass flow for the one-dimensional, multiphase, moving-boundary, transient-temperature transport problem in a finite-geometry system defined by cylindrical coordinates. The code utilizes an ideal diffusion model which requires uniform layer growth of all phases and assumes the existence of thermodynamic equilibrium at all interfaces at all times. While SIMTRAN was constructed specifically for the consideration of oxidation phenomena during the reaction of Zircaloy fuel tubes with steam under high-temperature transient oxidation conditions, only minor changes are necessary to make it generally applicable to other materials and a number of oxidation, diffusion, and heat-transfer problems. A variety of boundary-condition options permit the mathematical simulation of a wide range of oxidation experiments. The basic operational input to the code, which must include physical property, thermodynamic, and kinetic data over the desired temperature range, was selected from a variety of literature sources