TY - DATA T1 - CCWI2017: F85 'A THEORY FOR REALISTIC MODELLING OF LEAKAGE AND INTRUSION FLOWS THROUGH LEAK OPENINGS IN PIPES' PY - 2017/09/01 AU - Richard Collins AU - Van Zyl JE AU - Lambert A UR - https://orda.shef.ac.uk/articles/journal_contribution/CCWI2017_F85_A_THEORY_FOR_REALISTIC_MODELLING_OF_LEAKAGE_AND_INTRUSION_FLOWS_THROUGH_LEAK_OPENINGS_IN_PIPES_/5365969 DO - 10.15131/shef.data.5365969.v1 L4 - https://ndownloader.figshare.com/files/9223177 KW - CCWI2017 KW - Leakage modelling KW - FAVAD KW - N1 KW - Civil Engineering not elsewhere classified N2 - The hydraulics of leakage and intrusion flows through leak openings in pipes is complicated by variations in the leak areas due to changes in pressure. This study presents a theoretical framework for the analysis of both leakage and intrusion flows through real leaks in pipes. A linear area- pressure relationship is assumed. The leakage exponent of a given leak opening is shown to generally not be constant with variations in pressure, and to approach infinity when the leakage number approaches a value of minus one. Significant modelling errors may result if an exponent used in the power equation used beyond its calibration pressure range, or at high exponent values. ER -