Uncertainty and Sensitivity Analysis of a Model for Multicomponent Aerosol Dynamics
| Autor: | Jon C. Helton, Ronald L. Iman, J. D. Johnson, C. D. Leigh |
|---|---|
| Rok vydání: | 1986 |
| Předmět: |
Nuclear and High Energy Physics
Variables Mathematical model 020209 energy media_common.quotation_subject Regression analysis 02 engineering and technology Condensed Matter Physics Aerosol 020303 mechanical engineering & transports 0203 mechanical engineering Nuclear Energy and Engineering Chemical engineering Latin hypercube sampling MELCOR 0202 electrical engineering electronic engineering information engineering Environmental science Statistical physics Sensitivity (control systems) Shape factor media_common |
| Zdroj: | Nuclear Technology. 73:320-342 |
| ISSN: | 1943-7471 0029-5450 |
| DOI: | 10.13182/nt86-a16075 |
| Popis: | An uncertainty and sensitivity analysis of the MAEROS model for multicomponent aerosol dynamics is presented. Analysis techniques based on Latin hypercube sampling and regression analysis are used to study the behavior of a two component aerosol in a nuclear power plant containment for a transient accident with loss of AC power (i.e., a TMLB' accident). Conditional on assumed ranges and distributions for selected independent variables (e.g., initial distributions and mass loadings for each component, temperature, pressure, shape factors), estimates are made for distributions of model predictions and for the independent variables which influence these predictions. The analysis indicated that, for the situation under consideration, variables related to agglomeration (e.g., dynamic shape factor, material density, agglomeration shape factor, and turbulence dissipation rate) tended to dominate the observed variability. For comparison, an analysis based on differential techniques is also given. Further, a study of the effects on MAEROS predictions due to the number of particle size classes and the particle size class boundaries is presented. This analysis was performed as part of a project to develop a new system of computer codes (i.e., the MELCOR code system) for use in risk assessments for nuclear power plants. |
| Databáze: | OpenAIRE |
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