Name: DANIEL SOUSA OLIVEIRA
Publication date: 08/05/2020
Advisor:
Name |
Role |
|---|---|
| DANIEL DA CUNHA RIBEIRO | Advisor * |
Examining board:
| Name |
Role |
|---|---|
| ANA PAULA MENEGUELO | Internal Examiner * |
| DANIEL DA CUNHA RIBEIRO | Advisor * |
| RENATO DO NASCIMENTO SIQUEIRA | External Examiner * |
Summary: The experimental study of multiphase flow is of great importance in engineering teaching and research. Especially the horizontal flow, WHERE the phase distribution is strongly asymmetric. The study of such flow occurs through the manufacture of experimental devices that are commonly called a loop. Therefore, in this work, a loop for flow parttern of liquid and gas was manufactured and started. The apparatus was made from equipment allocated at the CEUNES / UFES Porous Media Flow Laboratory and low-cost materials available on the market. For the loop, a march was generated for the operation and shutdown operations and as a result of the assembly, a loop formed by different systems was obtained. In the operating phase of the loop, it was possible to collect the flow patterns resulting from different combinations of surface gas and liquid velocities. In general, for ranges of surface gas velocity between 0.16 and 1.44 m / s and liquid between 1.04 and 2.55 m / s, ) were recognized flow regime dispersed bubbles and intermittent patterns (plug / elongated bubble and slug ). The flow regime obtained were compared with the map by MANDHANE et al. (1974) and good agreement was obtained with the slug / elongated bubble. Pressure gradients were also collected and analyzed, which were shown to be increasing and proportional to the increase in surface velocities of the liquid or gas phases, assuming maximum values of 7900 Pa/m νSG = 1,44 m/s and νSL = 2,36 m/s. Then, the experimental pressure gradient values were compared with the LOCKHART and MARTINELLI (1949) prediction model.
