Effect of Concentration Gradient on Explosion Characteristics of Industrial Combustible Gas Cloud
The concentration distribution of combustible gas cloud formed by industrial pipeline leakage is often uneven.In order to simulate the explosion of industrial combustible gas leakage and improve the accuracy of calculation,the explosion process of industrial combustible gas cloud was simulated with parallel gradient concentration gas cloud explosion as the research object,and the characteristics of gas cloud explosion caused by industrial combustible gas leakage were simulated with uniform gas cloud and multi-layer heterogeneous hemispherical gas cloud with parallel gradient concentration as the research object.The effects of ignition position,concentration distribution on the explosion of hydrogen gas cloud were studied by taking three parallel concentration gas clouds as examples.The results showed that compared with the uniformly distributed gas cloud,the explosion shock wave generated by the gas cloud with gradient concentration was significantly weakened,and the more uneven the hydrogen concentration distribution and the lower the hydrogen concentration at the ignition position,the smaller the explosion overpressure generated.The results of this paper provide data reference for the prediction of the consequences of hydrogen gas cloud explosion and accident prevention.
Industrial combustible gas cloudExplosion overpressureNumerical simulationParallel concentration gradient
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