CAJ | 학술논문

由于缺少管道沿途测量数据,近海管道运输中的泄漏检测问题比陆地流体管道泄漏检测系统更具有挑战性.我们用传输线模型来考虑其线性动力学部分,然后通过有限差分法和偏微分方程拉普拉斯变换来比较传递函数的频域响应.仿真结果表明,有限维模型在低频下可以有效地逼近原始线性模型.由于近海管道监控与数据采集系统缺少传感器,进一步提出了一种新型集成漂流传感嚣的方法来解决此类型的检测问题并对数据同化框架进行了简要地介绍.
유우결소관도연도측량수거,근해관도운수중적설루검측문제비륙지류체관도설루검측계통경구유도전성.아문용전수선모형래고필기선성동역학부분,연후통과유한차분법화편미분방정랍보랍사변환래비교전체함수적빈역향응.방진결과표명,유한유모형재저빈하가이유효지핍근원시선성모형.유우근해관도감공여수거채집계통결소전감기,진일보제출료일충신형집성표류전감효적방법래해결차류형적검측문제병대수거동화광가진행료간요지개소.
Leakage detection in offshore pipeline transport is much more challenging than that in ground fluid transport systems due to the lack of measurements along the pipelines.The linear dynamics is considered using the transmission line model,and then we compare the frequency responses of the transfer functions are obtained via both the finite difference method and PDE Laplace transform.The simulation result shows the effectiveness of the finite dimensional models which can approximate the original linearized model accurately in low frequencies.Due to the scarcity of the sensors in the SCADA (the supervisory control and data acquisition) systems of offshore pipelines,a novel integrated drifting sensor solution is proposed for this type of detection problem and a brief introduction to the data assimilation framework is given.