液体储罐泄漏数学模型的改进研究

The Improvement for the Mathematical Model of the Leakage of Liquid Storage Tanks

在液体储罐泄漏过程中,罐内压力是随泄漏时间变化的量,泄漏强度也随罐内压力而变化,但在已有对液体流泄漏数学模型的建构中,在后果计算时没有全面考虑罐内压力以及罐内液体闪蒸导致空间的物质量,获得的结果用于后果评价,就必然与实际情况存在偏差。应用数学方法,对液体泄漏模型进行改进,改进后模型把罐内压力以及罐内空间的物质量作为变量,可较真实模拟出泄漏时泄漏强度、储罐内气体压力及泄漏量随时间变化的大小情况,并模拟了孔洞液体泄漏,得出不太可能发生灾难性事故的结论。

In the leaking process of liquid in a tank, the pressure in the tank is a variable with the lea put in the inconsistent literatures on the issue, th quality in the tank due to flashing of liquid with variation of the pressure are neglected. And it is obviously that the conclusion on this condition does not agree to the real one. In this paper, with the application of mathematical meth- ods, the defective mathematical model for 1 sure in the tank and the tank space quality eaking process of liquid in the tank are revised, namely, taking the pres- as variables. And the improved model the can give the quantify changes with time variation of the leaking intensity, the pressure in the tank and leakage more closely. At last, we draw the conclusion that pore liquid leakage unlikely gives rise to be catastrophic accidents.