摘要
应用计算流体力学理论给出了长输管道稳态气体泄漏率的计算方法。计算结果表明,给出的新模型是一个通用模型,它包含了孔模型和管道断裂模型,可用于计算不同孔径条件下的气体泄漏率。当管道破坏的孔径较小,为小孔泄漏时,新模型与孔模型计算结果一致;而当管道发生全截面断裂时,则与管道模型计算结果相近;当管道破裂的孔径大于小孔而小于管径时,则采用新模型计算气体泄漏率更符合实际情况。
A mathematical model of steady state gas release flow rate in long distance pipeline is given by use of computational fluid mechanics. It is found that the hole model is suitable to gas release through a small hole,while pipe model is suitable to the gas release through a hole corresponding to the complete breaking of the pipe. A new model is proposed for the hole that lies between the small hole diameter and pipe diameter. The results show that the new model covers all the possible hole diameters. This new model is a combination of hole model and pipe model. When the hole diameter is relatively small,the results given by the new model is the same as that of the hole model;when the hole diameter is equal to the pipe diameter,the new model predicts the same results as that of pipe model. It is the new model that should be used when the hole diameter is larger than small hole diameter,but smaller than the pipe diameter.
出处
《油气储运》
CAS
北大核心
2002年第8期11-15,共5页
Oil & Gas Storage and Transportation
基金
中国石油天然气集团公司创新基金
