Abstract
Gas explosion accident of cylindrical vessels happens from time to time in industries, which severely threatens the safe operation of the industries. To prevent such accidents, the pressure relief devices are usually installed on the vessels. So, the anti-explosion and pressure-relief design has to be conducted for the vessels. It is the key to analyze the process of gas deflagration and discharge in cylindrical vessels, especially the features of pressure development in cylindrical vessels, for the anti-explosion and pressure-relief design. First, the process of gas deflagration and discharge is analyzed in cylindrical vessels. According to the law of deflagration development, the physical model is set up to describe the whole process. Based on the energy conservation equation and the mass conservation equation, integrating the gas state equation, the isentropic compression equation, and the gas discharging rate equation, the mathematical model is developed for the process. Using the 4-order Runge-Kutta method, the numerical simulation is conducted for the process. The deflagration pressure, pressure-rising rate, flame position, and flame-propagating rate are known at different time. The influence of the pressure relief area and the discharging pressure on the process is discussed, which has guiding significance for the anti-explosion and pressure-relief design of such vessels.
| Original language | English |
|---|---|
| Pages (from-to) | 122-124+17 |
| Journal | Natural Gas Industry |
| Volume | 25 |
| Issue number | 6 |
| State | Published - 25 Jun 2005 |
| Externally published | Yes |
Keywords
- Combustible gas
- Combustion
- Discharge
- Explosion
- Numeri-cal simulation
- Pipes
- Process
- Vessel
