Eventos Anais de eventos
ENCIT 2016
16th Brazilian Congress of Thermal Sciences and Engineering
NUMERICAL ANALYSIS OF PRESSURE AND VOID FRACTION WAVES IN A TRANSIENT TWO-PHASE FLOW USING SLUG-TRACKING MODEL
Submission Author:
Jéssica Gonçalves , SP
Co-Authors:
Ricardo Augusto Mazza
Presenter: Jéssica Gonçalves
doi://10.26678/ABCM.ENCIT2016.CIT2016-0079
Abstract
Slug flow is found in many industrial processes with large economic interest and occurs with the largest range of gas and liquid flow rates of all two-phase flow patterns. Despite of its intrinsically transient behavior, most models proposed capture only the average flow parameters. The exceptions are the slug tracking models, which are able to reproduce bubble and slug transient behavior through the pipe. Although slug tracking is a transient model, it has not been used to study the hydraulic transient behavior such as pressure and void fraction waves, despite of their importance for the oil and gas industry. The main objective of this paper is to study the transient characteristics of the slug flow using slug tracking models proposed in literature and explore their abilities to reproduce pressure and void fraction waves. To achieve this objective, some open source slug tracking models are used to simulate the main slug flow parameters when the gas flow rate at the entrance of a horizontal pipe is increased or decreased. Time history and the speed of pressure and void fraction waves were evaluated.
Keywords
void fraction wave, pressure wave, transient slug flow, slug tracking model
