Numerical Investigation Of Fire Inside The Compartment With The Effect Of Ventilation
Journal Title: International Journal of Engineering and Science Invention - Year 2018, Vol 7, Issue 10
Abstract
The objective of the present study is to investigate the effect of ventilation in building subjected to the fire inside the compartment using CFAST software with a similar concept of CFD simulation. The effect of turbulent parameters, combustion, soot formation, thermal radiation, heat transfer, and pyrolysis of combustible solid fuel have been studied to find out the variation of temperature, the concentration of N2, CO, CO2 and layer height in the fire under the effect of ventilation numerically. The temperature distribution and concentrations of N2, CO, CO2, and O2 to the effect of inside the compartment are increased within a fraction of time and then it will be decreased due ventilation when the door and windows are opened during the fire. Similarly, the temperature distribution and concentrations of N2 CO, CO2, and O2 inside the compartment will be increased and then decreased. However, the magnitude of above parameters is low when the door and windows are opened that is due to the effect of ventilation. The upper layer temperature is found as 890 K in case of without ventilation but the upper layer temperature is decreased to 700 K with ventilation due to flue gases flow out through the opening. Also, the concentration of CO is reduced from 0.7% in volume to 0.53% in volume due to the effect of ventilation. The results show that the ventilation plays a major part in the brutality of fire in any compartment. The computer program is used to create the models relies heavily on various assumptions such as the ambient temperature, wind, humidity, and the simplicity of the furniture inside the compartments. Therefore, these results only provide a certain level of accuracy, which is acceptable for investigation in small compartments. The simulation data obtained in the study has been validated with real measured data available in literature in order to attain a more accurate result. The reproduction results are well agreed with the experimental results published in the literature in a similar type of problems.
Authors and Affiliations
ssuyambazhahan . , fahad Al- Mufadi, alaboodi S Abdulaziz
Keywords
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