INPUT DATA OF BURNING WOOD FOR CFD MODELLING USING SMALL-SCALE EXPERIMENTS
DOI:
https://doi.org/10.14311/CEJ.2017.04.0038Keywords:
Combustion of wood, Pine, FDS, Cone calorimeter, FTCH, Small-size experimentAbstract
The paper presents an option how to acquire simplified input data for modelling of burning wood in CFD programmes. The option lies in combination of data from small- and molecular-scale experiments in order to describe the material as a one-reaction material property. Such virtual material would spread fire, develop the fire according to surrounding environment and it could be extinguished without using complex reaction molecular description. Series of experiments including elemental analysis, thermogravimetric analysis and difference thermal analysis, and combustion analysis were performed. Then the FDS model of burning pine wood in a cone calorimeter was built. In the model where those values were used. The model was validated to HRR (Heat Release Rate) from the real cone calorimeter experiment. The results show that for the purpose of CFD modelling the effective heat of combustion, which is one of the basic material property for fire modelling affecting the total intensity of burning, should be used. Using the net heat of combustion in the model leads to higher values of HRR in comparison to the real experiment data. Considering all the results shown in this paper, it was shown that it is possible to simulate burning of wood using the extrapolated data obtained in small-size experiments.
Downloads
References
KIM, Mihyun Esther, Dembsey Nicholas. Engineering guide for estimating material pyrolysis for fire modelling. Worcester Polytechnic Institute, 2012.
GANDELOVÁ, Libuše, Petr HORÁČEK a Jarmila ŠLEZINGEROVÁ. Nauka o dřevě. Vyd. 2. Brno: Mendelova zemědělská a lesnická univerzita, 2002. ISBN 8071575771.
HIGUCHI, Takayoshi. Biosynthesis and biodegradation of wood components. Orlando: Academic Press, 1985. ISBN 0123478804.
GAO, Ming, Caiyun SUN and Kai ZHU. Thermal degradation of wood treated with guanidine compounds in air: Flammability study. Journal of Thermal Analysis and Calorimetry [online]. 2004, vol. 75, no. 1, s. 221-232. ISSN 1388-6150.
AGGARWALL, P. and D. DOLLIMORE. A thermal analysis investigation of partially hydrolyzed starch. Thermochimica Acta, 319, 17-25, 1998. [6] SHEN, Dekui, Xiao RUI, Gu SAI and Huiyan ZHANG. The Overview of Thermal Decomposition of Cellulose in Lignocellulosic Biomass. Cellulose-Biomass Conversion. InTech. 2013. ISBN 978-953-51-1172-6
ČSN 73 0824. Požární bezpečnost staveb - Výhřevnost hořlavých látek. Praha: Úřad pro technickou normalizaci, metrologii a státní zkušebnictví, 1992. [8] BABRAUSKAS, Vytenis. SFPE handbook of fire protection engineering [online]. Sage Publications, Inc, 2016. 164 s. ISBN 0734-9041.
MCGRATTAN, K. et al. Fire Dynamics Simulator User’s Guide. Sixth Edition. NIST - National Institute of Standards and Technology, VTT - Technical Reasearch Centre of Finland. Also available: http://firemodels.github.io/fds-smv/
ISO 5659-2. Plastics -- Smoke generation -- Part 2: Determination of optical density by a single-chamber test. Geneve: International Organization for Standardization. 2017.
Downloads
Published
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
