CFD-based analysis of thermocouple measurements in the fire decay and cooling phases in relation to the adiabatic surface temperature
- Author
- Florian Put (UGent) , Andrea Lucherini (UGent) , Ruben Van Coile (UGent) and Bart Merci (UGent)
- Organization
- Project
- Abstract
- The definition of the thermal boundary conditions is usually the first step in a structural fire engineering calculation and is often represented by a single time-temperature curve, which should be referred to as an Adiabatic Surface Temperature. The validation of thermal boundary condition models is commonly performed based on data from large-scale fire experiments, in which thermocouple measurements provide temperature data, with focus on the post-flashover heating and fully-developed phases of a fire. The present study investigates whether thermocouple data obtained during the decay and cooling phases can serve as input for structural fire engineering calculations, and whether they can be used to compare against Adiabatic Surface Temperature models. To this purpose, a series of canonical FDS simulations is performed, representing the thermal boundary conditions that would be encountered in the fire decay and cooling phases, to study the impact of smoke and radiation on thermocouple measurements. The dynamically changing environment in which the thermocouples are situated during the decay and cooling phases (increased radiation due to dilution of the smoke) is shown to be incompatible with fixed values for the convective heat transfer coefficient and the effective emissivity, as used in the framework of the Adiabatic Surface Temperature.
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Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-01J1CMWME5A61DGH2FGPCBDJ8J
- MLA
- Put, Florian, et al. “CFD-Based Analysis of Thermocouple Measurements in the Fire Decay and Cooling Phases in Relation to the Adiabatic Surface Temperature.” Proceedings of the 13th International Conference on Structures in Fire (SiF 2024), edited by L Simões da Silva et al., CMM - Portuguese Steelwork Association, 2024, pp. 1009–19.
- APA
- Put, F., Lucherini, A., Van Coile, R., & Merci, B. (2024). CFD-based analysis of thermocouple measurements in the fire decay and cooling phases in relation to the adiabatic surface temperature. In L. Simões da Silva, P. Vila Real, A. Santiago, H. Craveiro, & L. Laím (Eds.), Proceedings of the 13th International Conference on Structures in Fire (SiF 2024) (pp. 1009–1019). CMM - Portuguese Steelwork Association.
- Chicago author-date
- Put, Florian, Andrea Lucherini, Ruben Van Coile, and Bart Merci. 2024. “CFD-Based Analysis of Thermocouple Measurements in the Fire Decay and Cooling Phases in Relation to the Adiabatic Surface Temperature.” In Proceedings of the 13th International Conference on Structures in Fire (SiF 2024), edited by L Simões da Silva, P Vila Real, A Santiago, H Craveiro, and L Laím, 1009–19. CMM - Portuguese Steelwork Association.
- Chicago author-date (all authors)
- Put, Florian, Andrea Lucherini, Ruben Van Coile, and Bart Merci. 2024. “CFD-Based Analysis of Thermocouple Measurements in the Fire Decay and Cooling Phases in Relation to the Adiabatic Surface Temperature.” In Proceedings of the 13th International Conference on Structures in Fire (SiF 2024), ed by. L Simões da Silva, P Vila Real, A Santiago, H Craveiro, and L Laím, 1009–1019. CMM - Portuguese Steelwork Association.
- Vancouver
- 1.Put F, Lucherini A, Van Coile R, Merci B. CFD-based analysis of thermocouple measurements in the fire decay and cooling phases in relation to the adiabatic surface temperature. In: Simões da Silva L, Vila Real P, Santiago A, Craveiro H, Laím L, editors. Proceedings of the 13th International Conference on Structures in Fire (SiF 2024). CMM - Portuguese Steelwork Association; 2024. p. 1009–19.
- IEEE
- [1]F. Put, A. Lucherini, R. Van Coile, and B. Merci, “CFD-based analysis of thermocouple measurements in the fire decay and cooling phases in relation to the adiabatic surface temperature,” in Proceedings of the 13th International Conference on Structures in Fire (SiF 2024), Coimbra, Portugal, 2024, pp. 1009–1019.
@inproceedings{01J1CMWME5A61DGH2FGPCBDJ8J,
abstract = {{The definition of the thermal boundary conditions is usually the first step in a structural fire engineering
calculation and is often represented by a single time-temperature curve, which should be referred to as an
Adiabatic Surface Temperature. The validation of thermal boundary condition models is commonly
performed based on data from large-scale fire experiments, in which thermocouple measurements provide
temperature data, with focus on the post-flashover heating and fully-developed phases of a fire. The present
study investigates whether thermocouple data obtained during the decay and cooling phases can serve as
input for structural fire engineering calculations, and whether they can be used to compare against Adiabatic
Surface Temperature models. To this purpose, a series of canonical FDS simulations is performed,
representing the thermal boundary conditions that would be encountered in the fire decay and cooling
phases, to study the impact of smoke and radiation on thermocouple measurements. The dynamically
changing environment in which the thermocouples are situated during the decay and cooling phases
(increased radiation due to dilution of the smoke) is shown to be incompatible with fixed values for the
convective heat transfer coefficient and the effective emissivity, as used in the framework of the Adiabatic
Surface Temperature.}},
author = {{Put, Florian and Lucherini, Andrea and Van Coile, Ruben and Merci, Bart}},
booktitle = {{Proceedings of the 13th International Conference on Structures in Fire (SiF 2024)}},
editor = {{Simões da Silva, L and Vila Real, P and Santiago, A and Craveiro, H and Laím, L}},
isbn = {{9789893529225}},
language = {{eng}},
location = {{Coimbra, Portugal}},
pages = {{1009--1019}},
publisher = {{CMM - Portuguese Steelwork Association}},
title = {{CFD-based analysis of thermocouple measurements in the fire decay and cooling phases in relation to the adiabatic surface temperature}},
url = {{https://www.structuresinfire.com/corpo/conferences/sif24.pdf}},
year = {{2024}},
}