Experiments and numerical simulation on methane flame quenching by water mist

2001 ◽  
Vol 14 (6) ◽  
pp. 603-608 ◽  
Author(s):  
Hiroshi Shimizu ◽  
Manai Tsuzuki ◽  
Yasuo Yamazaki ◽  
A Koichi Hayashi
Keyword(s):  
Numerical Simulation ◽  
Water Mist ◽  
Methane Flame ◽  
Flame Quenching

scholarly journals A Numerical Approach of the Influence of Water Temperature in the Extinction of Fire Developed in Closed Spaces

2022 ◽  
Vol 960 (1) ◽  
pp. 012006
Author(s):  
P Cozma ◽  
D Pavel ◽  
C A Safta ◽  
A Chisacof
Keyword(s):  
Numerical Simulation ◽  
Fire Behavior ◽  
Numerical Approach ◽  
Water Mist ◽  
Simulation Approach ◽  
Influence Of Water ◽  
Different Temperatures ◽  
Fire Extinguish ◽  
Different Diameters ◽  
In Fire

Abstract The aim of this work is to make a visual investigation of the fire behavior during the extinguish process with water mist at different temperatures, different diameters of the nozzle and different angles of diffusion jet, too. It was used a numerical simulation approach to analyze 24 scenarios regarding the influence of mist water in fire extinguish process. The main test was focused on a given enclosure with dimensions of 1.0 × 1.0 × 3.0 m and the fire source placed inside, in the middle. The enclosure is considered opened on the upper part. From the numerical simulation values, we concluded the best scenario in fire extinguish process using water mist.

scholarly journals Effect of the Flow of Large Water Droplets on the Water Mist Sprays

2014 ◽  
Vol 2 (2) ◽  
pp. 27-37
Author(s):  
László Beda ◽  
Csaba Szikra
Keyword(s):  
Numerical Simulation ◽  
Velocity Field ◽  
Large Diameter ◽  
Water Mist ◽  
Cfd Model ◽  
Water Droplets ◽  
Numerical Studies ◽  
Dynamic Simulator ◽  
Fire Dynamic Simulator ◽  
Large Water

Abstract The purpose of this study is to investigate the velocity field generated by water droplets with relatively large diameter that has great effect on the movement of several orders of magnitude smaller particles. A CFD model, Fire Dynamic Simulator (FDS) version 5.5.3 was used for the numerical simulation. The data obtained from the numerical studies are analysed.

Numerical Simulation of Turbulent Biogas Combustion

2007 ◽  
Author(s):  
Beibei Yan ◽  
Xuesong Bai ◽  
Guanyi Chen ◽  
Changye Liu
Keyword(s):  
Numerical Simulation ◽  
Mass Flow ◽  
Flame Temperature ◽  
Combustion Process ◽  
Methane Combustion ◽  
Operational Parameters ◽  
Heating Value ◽  
Air Supply ◽  
Methane Flame ◽  
Secondary Air

Operating parameters are considered important for the biogas combustion process and the resulted flame features. The paper investigated the influence of typical parameters through numerical simulation, which include the dimension of combustor, fuel and air mass flow, and secondary air supply. The results from the simulations show that the biogas combustion behaves, to some extent, similarly to the methane combustion, yet significant differences exist between their flames. The combustion process is fairly sensitive to the geometrical and operational parameters. Biogas flame temperature is even lower compared to the methane flame temperature because biogas contains CO2 resulting in low heating value, therefore it is not straightforward to obtain stable combustion. Preheated secondary air or reduced its mass flow may have to be used in this case.

Experiments and numerical simulation on the suppression of explosion of propane/air mixture by water mist

2021 ◽  
Vol 223 ◽  
pp. 192-201
Author(s):  
Keisuke Nakahara ◽  
Akira Yoshida ◽  
Makihito Nishioka
Keyword(s):  
Numerical Simulation ◽  
Water Mist
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