Table 4.

Positions of measuring cross sections and measurement results of flowrates.

		Swelling 2 (t = 15 ms)	Swelling 3 (t = 22 ms)	Swelling 4 (t = 24 ms)
x (mm)	A	6.5	9.3	10.1
	B	5.6	6.4	7.7
	C	4.6	5.4	6.7
q (mm3/s)	A	27.1	31.4	28.3
	B	20.8	13.3	18.5
	C	3.9	0.6	1.3
$∆q/∆x$ (mm2/s)	AB	−7	−6.2	−4.1
	BC	−16.9	−12.7	−17.2