Table 2.

Experimental Reynolds numbers and relative velocities in air and oil

	Reynolds number
	0.004	0.01	0.02	0.04	0.1	0.2	0.4	1
Air velocity m$\cdot$s−1	0.02	0.05	0.1	0.2	0.5	1	2	5
Experimental oil velocity mm$\cdot$s−1	0.21	0.53	1.07	2.14	5.34	10.7	21.4	53.4

Reynolds numbers in water and oil were set to equal values for determination of the oil velocity corresponding to each air velocity that we wanted to investigate.