Gas-Liquid Flow in Dividing Tee-Junctions with a Horizontal Inlet and Different Branch Orientations and Diameters

摘要

A data base summarizing experiments on the phase redistribution and pressure differences for a gas-liquid mixture flowing through the horizontal inlet pipe (diameter D1 = 50 mm) of a Tee-junction is presented. Branch to inlet diameter ratios of D3/D1 = 1; 0.52; 0.2; and 0.08 were investigated. The branch orientation was horizontal, vertical upward, or vertical downward. Mostly air-water experiments were performed with pressures between 0.4 and 1 MPa. Experiments with steam-water flows at pressures between 1.5 and 10 MPa were performed for D3/D1 = 1 and a horizontal branch. The results on phase redistribution and pressure drop are compared with other experimental data and model predictions. The data base for Tee-junctions pressure differences is much more limited. Most experiments were performed with a horizontal branch and D3/D1 = 1. A comparison of different models with results for D3/D1 = 0.52 and 1 is presented. No model gives satisfactory results for arbitrary conditions.