article · French
Etude sur Simulateur des Régimes Transitoires des Concentrations dans une Installation de Diffusion Gazeuse
CEA Report No. 2010, authored by Delarousse, Trouvé, and Jacques from the Uranium Isotope Separation Studies Service at Saclay. Describes an electromechanical analog simulator built from CSF fire-control computer components to solve up to 35 linear differential equations representing transient isotope concentration regimes in gaseous diffusion cascades. The report covers the mathematical derivation of simulation equations via finite-difference approximation, hardware architecture (functional blocks, 5-rack layout, 472 kc/s HF integrators), accuracy assessments (2% steady-state, 2–10% transient), and practical applications including perturbation compensation, predetermined transitions, and full start-up schedule optimization for a 640-stage uranium enrichment plant.