Heat transfer characteristics of gas-liquid two-phase flow in microtubes

Abstract

Man, who has abundantly helpful and offered invaluable assistance, advice, and guidance throughout the work in every step of my research. His patient explanation and continuous encouragement have enlightened me to a more profound and extensive academic future. I am grateful to Asst/Prof. Jorg Uwe Schlüter for his support and concern throughout my thesis writing. I would like to take this opportunity to thank the staffs of CNC lab, Fluid Mechanics Lab technician Mr. Yap Pow Kim and Thermal Fluid Research lab 1 technician Mr. Yuen Kee Hock for the help and suggestions in the setup of my experiment test rig. In addition, I would like to thank all the students in the researcher room 2 for their help and suggestions. Besides I would like to take this opportunity to express my appreciation to Dr. Song Yan Xi and Mr. Chiew Wei Ming for their constant suggestions for my work. Last but not least, I would like to thank my family and especially to my wife. This thesis is impossible without their support and encouragement.

Mechanism of heat transfer for gas-liquid two-phase flow in deep drilling

“…In high-temperature and high-pressure drilling, gas-liquid two-phase flow exists widely and its heat transfer mechanism affects the temperature distribution on the drilling fluid surface [10][11]. At present, the research of drilling gas-liquid two-phase flow is mainly based on homogeneous phase model [14], split phase model or drift model.…”

Study on Entrainment Force between Phases Perpendicular to Horizontal Flow Direction in Gas-Liquid Two-Phase Flow

“…Assumption that gas-liquid two-phase flow state is stratified flow, differential pressure measured perpendicular to horizontal flow direction includes two parts [14], that is ∆ is got from the Eq.1. The section void fraction could be measured by capacitance sensor, whose structure was shown in Fig.…”