Air and oil with a temperature of 25 C are flowing through a horizontal pipe with an inner diameter 1.5 in at a volumetric flow rate of QG = 31 L/min and QL = 0.34 L/min, respectively. The pressure inside the pipe is kept at 44.1 psia. According to the Baker map, what is the flow pattern of this flow? Here, the density and viscosity of oil are pl = 860 kg/m and UL 1.72 x 10-2 Pa-s, and the surface tension is o = 0.030 N/m