Table 1.

Range of design parameters, flow conditions, and the number of variations used in this study.

Parameters	Range
Name	Unit	Lower bound	Upper bound	Number of variations
Geometry				28,125
Orifice width	μm	75	175	5
Normalized* orifice length	N.A.	1	3	5
Normalized* water inlet width	N.A.	2	4	5
Normalized* oil inlet width	N.A.	2	4	5
Normalized* channel depth	N.A.	1	3	5
Normalized* outlet width	N.A.	2	6	9
Flow condition				150
Flow rate ratio**	N.A.	2	22	10
Capillary number	N.A.	0.05	1.05	15

^*Parameters were normalized by dividing their value by the orifice width.

^**Ratio of oil flow rate to water flow rate.