Figure 9.
The horizontal axis is labeled t in square brackets s, indicating time in seconds, and ranges from zero to two thousand seconds. The vertical axis is labeled delta P divided by L subscript P in square brackets k P a per m, representing pressure difference per unit length in kilopascals per metre. The graph features a continuous line with varying vertical values, indicating fluctuations in the pressure difference over time.Pressure drops per unit length between P1 and P2 (reference of Figure 3) over time
Source: Authors’ own work