Prediction of Gas Explosion Overpressure in Pipe Using the ME Model

Based on the analysis of characters of gas explosion overpressure in pipe, the method of using the ME model to predict the overpressure in pipe is put forward to. In the paper, the ME model is revised on the basis of law of conservation of energy and resembling law of explosion energy to eliminate error caused by using the original ME model to evaluate gas explosion overpressure in pipe. Then combined with explosion blast reflecting theory the calculation methods of gas explosion overpressure in pipe are presented. In order to confirm the validation of the revised ME model, calculated data are compared with experiment data and with CFD software simulated data. The results show that the calculated data coincide with experiment data and that there is a good agreement between the calculated data and simulated data. The calculation methods can be applied for risk analysis and assessment for flammable gas explosion accidents in pipe. It can also provide important reference for the design of explosion relief venting and safety measures against the effects of gas explosion in pipe.