Evaluation of interference to the changing of measurement geometry in of multiphase flows using the MCNP-X code
Palavras-chave:
Multiphase flows, volume fraction, MCNP-X code, gamma ray attenuation.Resumo
This work aim evaluate the interference in the results of the geometry changes and obtaining the best measuring geometry to provide the volume fractions accurately by evaluating different geometries simulations (ranging the source-detector position, flow schemes and homogeneity Makeup) in the MCNP-X code. The study was performed for two types of biphasic compositions of materials (oil-water and oil-air), two flow regimes (annular and smooth stratified) and was varied the position of each material in relative to source and detector positions. Another study to evaluate the interference of homogeneity of the compositions in the results was also conducted. All these variations were simulated with two different types of beam, divergent beam and pencil beam. From the simulated geometries, it was possible to compare the differences between the areas of the spectra generated for each model. The results indicate that the flow regime and the differences in the material’s densities interfere in the results being necessary to establish a specific simulation geometry for each flows regime. However, the simulations indicate that changing the type of collimation of sources do not affect the results, but improving the counts statistics, increasing the accurate.Referências
Peixoto P.N.B., Salgado C.M., “Study of geometry to obtain the volume fraction of multiphase flows using the MCNP-X code.” In: International Nuclear Atlantic Conference, (2015).
Salgado, C.M., Brandão, L.E.B., SCHIRRU, R., Pereira, C.M.N.A., Conti, C.C.“Validation of a NaI(Tl) detector's model developed with MCNP-X code”. In:Progress in Nuclear Energy (New Series), v. 59, p. 19-25 (2012).
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Publicado
2015-12-04
Como Citar
Peixoto, P. N. B., & Salgado, C. M. (2015). Evaluation of interference to the changing of measurement geometry in of multiphase flows using the MCNP-X code. Instituto De Engenharia Nuclear: Progress Report, (2), 17. Recuperado de https://revistas.ien.gov.br/index.php/ienprogressreport/article/view/163
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Seção
Application of Nuclear Techniques in Health and Environment