Have a personal or library account? Click to login

Numerical Modelling of Underventilated Fire in a Compartment

Architecture, Civil Engineering, Environment
Volume 11 (2018): Issue 2 (June 2018)
By:
Open Access
|Apr 2019

Figures & Tables

Figure 1.

Figure of the analyzed room
Figure of the analyzed room

Figure 2.

Numerical mesh (symmetry plane visible)
Numerical mesh (symmetry plane visible)

Figure 3.

Temperature distribution at two time moments for Case1
Temperature distribution at two time moments for Case1

Figure 4.

Mass fraction of CO2 distribution at two time moments for Case1
Mass fraction of CO2 distribution at two time moments for Case1

Figure 5.

Distribution of mass fraction of O2 at two time moments for three Cases [kg/kg]
Distribution of mass fraction of O2 at two time moments for three Cases [kg/kg]

Figure 6.

Distribution of mass fraction of CO2 at two time moments for three Cases [kg/kg]
Distribution of mass fraction of CO2 at two time moments for three Cases [kg/kg]

Figure 7.

Distribution of temperature at two time moments for three Cases [K]
Distribution of temperature at two time moments for three Cases [K]

Figure 8.

Distribution of air velocity vectors at two time moments for three Cases [m/s]
Distribution of air velocity vectors at two time moments for three Cases [m/s]

Figure 9.

Variability in time of mass fraction of O2 at the height of 2.0 m (left tree).
Variability in time of mass fraction of O2 at the height of 2.0 m (left tree).

Figure 10.

Variability in time of volume flow rate through vent A
Variability in time of volume flow rate through vent A

Figure 11.

Variability in time of temperature [K] at the height of 0.5 andw 2.0 m (left tree)
Variability in time of temperature [K] at the height of 0.5 andw 2.0 m (left tree)

Numerical model summary

Feature Value
Turbulence model k-omega SST
Combustion model Non-premixed combustion
Fuel Methane (CH4)
Fluid material Mixture (according to PDF table, ideal gas)
Operating pressure 10325 Pa
Temperature 288 K
Gravitational acceleration 9.81 m/s2
Solver Pressure based
Calculation mode Transient
Pressure / velocity coupling Simple
Under-relaxation factorsPressure0.3
Momentum0.2
Energy1.0
OthersDefault
Calculation mode Transient
Time step Adaptive (0.001 – 0.6 s)

Considered cases

Air inlet
Case 1inlet A
Case 2inlet A, B
Case 3inlet A, B, C
DOI: https://doi.org/10.21307/acee-2018-029 | Journal eISSN: 2720-6947 | Journal ISSN: 1899-0142
Journal RSS Feed
Language: English
Page range: 115 - 123
Submitted on: Feb 3, 2018
Accepted on: Mar 26, 2018
Published on: Apr 4, 2019
Published by: Silesian University of Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
Ventilation controlled fire,
Supplied opening,
Exhaust opening,
Ansys Fluent
Related subjects:
Architecture and design,
Architecture,
Architects, buildings

© 2019 Małgorzata KRÓL, Aleksander KRÓL, published by Silesian University of Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Previous articleVolume 11 (2018): Issue 2 (June 2018)Next article