INPUT DATA OF BURNING WOOD FOR CFD MODELLING USING SMALL - SCALE EXPERIMENTS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00316649" target="_blank" >RIV/68407700:21110/17:00316649 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.civilengineeringjournal.cz/archive/issues/2017/2017_4/4-2017-0038.pdf" target="_blank" >http://www.civilengineeringjournal.cz/archive/issues/2017/2017_4/4-2017-0038.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/CEJ.2017.04.0038" target="_blank" >10.14311/CEJ.2017.04.0038</a>

Jazyk výsledku

angličtina

Název v původním jazyce

INPUT DATA OF BURNING WOOD FOR CFD MODELLING USING SMALL - SCALE EXPERIMENTS

Popis výsledku v původním jazyce

The paper presents an option how to acquire simplified input data for modelling of burning wood in CFD programmes. The option lies incombination of data from small-and molecular-scale experimentsin 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 realcone 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 ispossible to simulate burning of wood using the extrapolated data obtained in small-size experiments.

Název v anglickém jazyce

INPUT DATA OF BURNING WOOD FOR CFD MODELLING USING SMALL - SCALE EXPERIMENTS

Popis výsledku anglicky

The paper presents an option how to acquire simplified input data for modelling of burning wood in CFD programmes. The option lies incombination of data from small-and molecular-scale experimentsin 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 realcone 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 ispossible to simulate burning of wood using the extrapolated data obtained in small-size experiments.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA16-18448S" target="_blank" >GA16-18448S: Sdružený model požární zkoušky konstrukce v peci</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

The Civil Engineering Journal

ISSN

1805-2576

e-ISSN

1805-2576

Svazek periodika

2017

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

12

Strana od-do

471-482

Kód UT WoS článku

000424522300010

EID výsledku v databázi Scopus

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