Configuration factors for ground level fireballs with shadowing
This paper presents new configuration factors for a fireball located at ground level, as radiation emitting source, and a differential receiver, considering the shadow effect of a third finite area that stands between them. The configuration factors were obtained with the combination of a numerical...
| Authors: | ; ; ; |
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| Format: | Article |
| Publication date: | 2018 |
| Country: | España |
| Institution: | Universitat Politècnica de Catalunya (UPC) |
| Repository: | UPCommons. Portal del coneixement obert de la UPC |
| Language: | English |
| OAI Identifier: | oai:upcommons.upc.edu:2117/112961 |
| Online Access: | https://hdl.handle.net/2117/112961 https://dx.doi.org/10.1016/j.jlp.2017.12.010 |
| Access Level: | Open access |
| Keyword: | Sphere Radiation Aboveground Fireball Firewall Thermal radiation View factor Esfera Radiació Àrees temàtiques de la UPC::Enginyeria química |
| Summary: | This paper presents new configuration factors for a fireball located at ground level, as radiation emitting source, and a differential receiver, considering the shadow effect of a third finite area that stands between them. The configuration factors were obtained with the combination of a numerical method and a ray-tracing algorithm and are summarized in form of a practical single chart. This work contributes significantly to the knowledge of configuration factors between a sphere and a differential receiver considering the shadow effect because so far, there are no references in existing catalogs in the literature about this specific geometry. Configuration factors serve as inputs for surface-to-surface radiation transport calculations and other like. In chemical engineering, the radiant field produced by a fireball has a strong interest in consequences assessment. Current fireball models do not consider the shadow effect, overestimating vulnerability by thermal radiation and leading to greater safety distances. A case study has been performed to show the interference of a protection wall with respect to the radiation intensity received by a target. |
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