Detecting Multiple Leaks in Branched Pipe Systems by Modified Reconstructive Method of Characteristics

Abstract In this study, the modified reconstructive method of characteristics (RMOC) is used to detect multiple leaks in a pipeline and a branched system using transient data. This approach offers a distinct advantage as it requires measurements at a single location in each pipe. The primary contributions of this research are outlined as follows: (1) the development of RMOC for the detection of multiple leaks in elastic pipes, (2) extension of the method to accommodate viscoelastic (VE) pipes, (3) elimination of the need for prior knowledge of upstream boundary conditions, and (4) development of a stepwise methodology for multiple leak detection in a branched pipe system. By analyzing steady-state (SS) flow discharge within the pipe system, it becomes possible to identify the leaks. The pipeline is discretized into finite cells, and characteristic equations are employed to retroactively calculate steady-state flow parameters. To validate the effectiveness of this methodology, the obtained results are compared with numerical and experimental transient data available in existing literature. To demonstrate the efficacy of the proposed technique in a network, a hypothetical branched pipe system in a Y-configuration is considered, featuring four simultaneous leaks. The leaks are identified sequentially within each section of the Y-system, achieving an acceptable degree of accuracy in detection.