Target 2<\/strong>: To develop capability to simulate Finnish forest fuels ignition and combustion now and in future climate scenarios. Focus is on CFD (FDS) simulations.<\/p>\n\n\n\n Target 3<\/strong>: Capability to generate models of fuel mass and class distributions from the remote sensing data.<\/p>\n\n\n\n (Project Supervisor and leader – <\/strong>Prof. Simo Hostikka, Project member – <\/strong>Dr. D. Shanmugasundaram)<\/strong><\/p>\n\n\n\n (Project leader – <\/strong>Prof. Miina Rautiainen, Project member – <\/strong>Dr. Aarne Hovi)<\/strong><\/p>\n\n\n\n (Project leader – <\/strong>Dr. Henrik Lindeberg)<\/strong><\/p>\n\n\n\n (Project leader – <\/strong>Dr. Ilkka Vanha-Majamaa, Project member<\/strong> – Dr. Ekaterina Shorohova)<\/strong><\/p>\n\n\n\n 4)<\/strong> External Collaboration: Western Norway University of Applied Sciences:<\/mark><\/strong> Prof. Maria de Las Nieves Fernandez Anez<\/p>\n\n\n\n The goal of the research project is to characterize five different fuel particulates from Scandinavian forests, formulate pyrolysis models and validate them using laboratory-scale cone calorimeter and fire spread experiments. Model development also includes the creation of a particle cloud description from remote sensing data. To develop a pyrolysis model, fuel characterization (TGA and cone experiments) were carried out for the following live and fresh fuels:<\/p>\n\n\n\n Cone calorimeter experiments are essential for modelling the pyrolysis of porous forest fuels because they provide heat release, mass loss and ignition data at the material scale under well-defined external heat fluxes that are representative of fire conditions. These measurements are crucial for calibrating and validating the sub-models of pyrolysis used in physics-based fire simulations, including reaction rates, the heat of pyrolysis, and char yields. <\/p>\n\n\n\n Using conventional solid holders in cone calorimeter experiments can suppress gas transport and distort how highly porous forest fuels burn. This results in non-representative pyrolysis parameters. Therefore, it is particularly important to use a porous sample holder for the selected fuels, as this preserves natural aeration, permeability, and internal heat transfer pathways, which have a strong influence on devolatilization. Consequently, all the cone calorimeter experiments were carried out in this work using a new porous stainless steel sample holder with an opening area of 50%. The length and width of the sample holder are 10 cm, whereas the height is 3 cm.<\/p>\n<\/div>\n<\/div>\n\n\n Conferences<\/strong><\/p>\n\n\n\n The research is funded by the Finnish Fire Protection Fund (Palosuojelurahasto).<\/p>\n\n\n\nProject members<\/mark><\/h2>\n\n\n\n
1) Aalto University:<\/mark> a) Fuel characterization and development of fire spread model<\/span><\/em><\/strong><\/h4>\n\n\n\n
b) Particle cloud model creation based on LiDAR data<\/span><\/em> <\/strong><\/h4>\n\n\n\n
2) H\u00e4me University of Applied Sciences – HAMK:<\/mark> Choice of fuel selection<\/span><\/em> <\/strong><\/h4>\n\n\n\n
3) Natural Resources Institute Finland – LUKE:<\/mark> Sample collection and choice of fuel selection<\/em><\/span> <\/strong><\/h4>\n\n\n\n
Fuel characterization- TGA and cone calorimeter experiments<\/mark><\/h2>\n\n\n\n
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<\/a><\/a>Particle cloud model<\/mark><\/h3>\n\n\n\n
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Visible research output<\/mark><\/h3>\n\n\n\n
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Work in progress<\/mark><\/h3>\n\n\n\n
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Funding<\/mark><\/h3>\n\n\n\n
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