The inflammable gas alarm is widely used for petrochemical trade, It is applied to exammine the leakage in dangerous places. It is an important instrument to guarantee production and body safety.
Then, the process of leakage and combustion of the indoor fuel gas was numerical simulated by FLUENT6.1 software. Several cases in different conditions (igniting position, igniting time, leak speed and ventilate condition) had been simulated.
The last, the spread of the flame was determined by both igniting position and the ventilation condition at the beginning of the combustion, and the combustion status after the fiashover was determined by the indoor mean concentration of the fuel gas.
In this paper, a physical model was founded from the real fire scene. Then, the process of leakage and combustion of the indoor fuel gas was simulated by FLUENT6.1 software and the simulation of empty room and blocked room was accomplished.
Assume an axisymmetric blunt body or a symmetric profile is located in a uniform supersonic combustible gas mixture stream with the parameters M1, p1, and T1.
Reliable simulation of leaks, dispersion and dilution of flammable gas mixtures are important in order to estimate the risk in industrial gas safety analysis.
The problem of thermal explosion in a flammable gas mixture with addition of volatile fuel droplets is studied based on the asymptotic method of integral manifolds.
The addition of p-type metal oxides, such as NiO and MnO, to the SnO2 matrix was found to be effective in increasing the sensitivity towards inflammable gas.
The effects of air reactor temperature, fuel reactor temperature, and ratio of water to coal on the composition of fuel gas, recirculation of oxygen carrier particles, etc., are discussed.