Fig. 2
From: Experimental data on filling and emptying of a large-scale pipeline

PVC pipeline layout and instrumentation; locations of measurement sections 1, 3, 5, 6, 7, 8, and 9 and transparent sections 2, 4, and 10; inset a: PVC bridge in vertical plane; inset b: 180° combined turn in horizontal plane; straight PVC pipes are indicated by roman numerals I, II, III, IV, V, and VI; pressure and water level are measured at sections 1, 3, 5, 7, 8, and 9; temperature is measured at sections 1, 3, and 9; bold arrows: water flow direction through PVC pipeline.