Saved in:
| Main Author: | |
|---|---|
| Format: | Artículo científico |
| Language: | en |
| Published: |
Sociedade Brasileira de Proteção Radiológica - SBPR
2020
|
| Subjects: | |
| Online Access: | https://www.redalyc.org/articulo.oa?id=722280924028 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Table of Contents:
- Determination of fluid dynamic parameters through imports of CFD images validated in experiments for the MCNPX code Victor Hugo Farias Ferreira da Silva Carlos Costa Dantas Silvio de Barros Melo Fernando Roberto de Andrade Lima Pamalla Rafaelly Barbosa de Oliveira Tennyson Accetti Resende Filho Jorge Alexandre Gomes Lins Eudes Bertony Vieira Bruno Gomes Andrade Milton Santos Viana Biología MCNPX CT gamma Validation Importing CFD Pilot cold unities Nonintrusive gamma ray transmission measurements provided a significant contribution to flow structure models describing the FCC riser multiphase system. Circulating Fluidized Bed (CFB) in pilot cold unities are well-known facilities for parameters estimation. Two-phase is model approach to the fluid dynamic studies considering steady state in operational conditions. Flow characterization by semi empirical literature equations and CFD simulations are carried out in flow parameter estimation followed by CT gamma ray validation. In this work, the Monte Carlo simulation of gamma ray scan importing CFD experiments brings a wide range for the two-phase flow investigation. Computational methods are developed to interface geometry and dynamic functions describing circulating flow. Software implementation steps convert color scales into image grids corresponding to solid density. Therefore, the two-phase flow in CFD simulations was imported in MCNPX geometry. The Monte Carlo tomography simulation of three riser heights 0,65 m, 1,38 m and 3,42 m, yield volumetric fractions of 0,038, 0,013 and 0,004 for the solid radial distribution. The heights are of the three testing sections for monitoring pressure and gamma intensity. Results are compared to CT gamma ray tomography and to literature data. 2020 artículo científico 2319-0612 https://www.redalyc.org/articulo.oa?id=722280924028 en http://www.redalyc.org/revista.oa?id=7222 Brazilian Journal of Radiation Sciences application/pdf Sociedade Brasileira de Proteção Radiológica - SBPR Brazilian Journal of Radiation Sciences (Brasil) Num.3A Vol.8