Question

Figure 2 shows the flow map for vertical multiphase up-flow of a gas and liquid. The mass flow of gas is 2.0 kg s1 and the mass flow of the

liquid9 kg s-1. The pipe diameter is 0.152m and the physical properties of the gas and liquid are given below. Use the flow map to determine the flow regime in the pipe. )For this flow, calculate the pressure difference between the inlet and outlet of a pipe that is 30 m tall. The friction factor is given by the following equation. f=\frac{0.082}{R e^{0.25}} c) What percentage increase in the liquid mass flow up the pipe would cause slug flow to occur?

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