Article
Mechanics
Chuanshuai Dong, Ronghui Qi, Lizhi Zhang
Summary: This paper develops a mechanistic model to study the flow and heat transfer of upward two-phase slug flow in vertical pipes. The effect of flow geometry and parameters on heat transfer in two-phase slug flow is comprehensively investigated.
Article
Engineering, Chemical
Teng Wang, Miao Gui, Jinle Zhao, Qincheng Bi, Tao Zhang
Summary: The paper focuses on the measurement and calculation model of void fraction for the vertical upward co-current air-water slug flow in a circular tube. A new void fraction model based on the local parameters was proposed. The research results showed that the void fraction proportion in Taylor bubbles was crucial to the overall void fraction.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Engineering, Petroleum
Abderraouf Arabi, Faiza Saidj, Abdelsalam Al-Sarkhi, Abdelwahid Azzi
Summary: This paper explores the hydrodynamic similarities and differences between vertical cap bubble flow and horizontal plug flow. Through experiments and comparison of different flow parameters, it investigates the behavior differences between cap bubble and slug flow, and highlights the significance of the gas-to-liquid superficial velocities ratio in the transition between these two flow patterns.
Article
Mechanics
Qi Kang, Shangfei Song, Jiahan Yu, Bohui Shi, Yuchuan Chen, Xiaofang Lv, Yang Liu, Zonghan Bai, Bingyuan Hong, Wei Wang, Jing Gong
Summary: This study simulated the upward multiphase flow of hydrate slurry in a vertical concentric annulus, proposed suitable hydrate slurry hydrodynamic models for different flow regimes, and analyzed the factors affecting flow behaviors.
Article
Thermodynamics
Jung Hyun Song, Jun Yeong Jung, Soon Heung Ch, Yong Hoon Jeong
Summary: A new mechanistic model was developed in this study to predict the subcooled flow boiling CHF in a rectangular channel for turbulent upward flow under low pressure. The model considers the growth of coalesced vapor clot due to bubble coalescence in both the flow direction and radial direction, as well as the thinning of the liquid sublayer due to vapor clot growth. The proposed model showed good prediction performance with the lowest error compared to existing models.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Engineering, Chemical
Dayang Wang, Ningde Jin, Lusheng Zhai, Yingyu Ren
Summary: In this study, a novel liquid film sensor is used to investigate the characteristics of the liquid film around Taylor bubble structure in gas, oil, and water three-phase flow, including structural and nonlinear dynamics characteristics. The structural characteristics, such as proportion, appearance frequency, and thickness of the liquid film, are obtained, and the effects of liquid and gas superficial velocities and oil content on them are investigated. The entropy analysis is introduced to successfully uncover and quantify the dynamic complexity of the liquid film behavior.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Engineering, Petroleum
Bangtang Yin, Shaowei Pan, Xuxin Zhang, Zhiyuan Wang, Baojiang Sun, Hongtao Liu, Quan Zhang
Summary: This study focused on the flow pattern transition of gas-oil two-phase flow and its dependence on oil viscosity, revealing the mechanisms and impact of viscosity on flow pattern transition through experiments and numerical simulations.
Article
Thermodynamics
Qichao Liu, Yunlong Zhou, Cong Chen
Summary: This study experimentally investigated the frictional pressure drop characteristics of gas-liquid two-phase flow in vertical and inclined upward tubes under heaving oscillation. It was found that existing models had large errors in calculating the frictional pressure drop under heaving oscillation, and a new model was established to improve the accuracy of calculations.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Engineering, Marine
Satoru Takano, Sotaro Masanobu, Shigeo Kanada, Masao Ono
Summary: Subsea minerals and methane hydrate have been found in the exclusive economic zone of Japan, but commercialization has been hindered by technical issues. Gas-lift pumping is a promising technique for transporting these resources, but accurate methods for calculating frictional pressure drops in three-phase flows are needed. This study reviewed existing correlations and conducted experiments to propose new correlations for calculating frictional pressure drops in vertical three-phase flows.
Article
Nuclear Science & Technology
Jinshun Liu, Ting Xue
Summary: This study investigated the liquid entrainment in vertical upward gas-liquid annular flow using Planar Laser-induced Fluorescence. The results showed that the frequency of occurrence of entrainment types 2 and 3 decreased with increasing wave frequency, while for types 4 and 5 it increased with the fluctuation amplitude of the liquid film. The study also analyzed the fraction distribution of the entrainment under different flow conditions and found that the gas-liquid superficial velocity affected the size distributions of liquid entrainments.
PROGRESS IN NUCLEAR ENERGY
(2022)
Article
Engineering, Petroleum
Ghassan H. Abdul-Majeed, Mahshid Firouzi
Summary: This study investigated the effect of liquid viscosity on the slug/churn transition in gas/liquid flows in vertical pipes. Existing transition models were analyzed and a new model was proposed based on experimental data. The study found that the slug/churn transition moves towards lower superficial gas velocities as liquid viscosity increases on the V-sg/V-sl flow map.
SPE PRODUCTION & OPERATIONS
(2021)
Review
Environmental Sciences
Haotian Liu, Linsen Zhan, Hailong Lu
Summary: The mechanisms for methane migration in marine sediments, including diffusion and advection processes, have not been well reviewed yet. The presence of natural gas hydrate affects methane migration by reducing permeability, enhancing geomechanical strength, and constructing hydrate channels. Dissolved methane faces high consumption rates, while free methane gas is hindered by capillary force. Methane discharge along fractures or failure surfaces is considerable, and gas flow through hydrate channels is difficult to constrain.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Engineering, Chemical
Antai Liu, Changqi Yan, Fuqiang Zhu, Haifeng Gu, Suijun Gong
Summary: The experimental results showed that the liquid film thickness was affected by both gas phase velocity and liquid phase velocity, with the effect of gas phase velocity gradually decreasing as its speed increases in annular flow. The interfacial friction factor was significantly influenced by liquid phase velocity at low gas phase velocity but this impact decreased with increasing gas phase velocity. Existing correlations for the parameters showed a large deviation between predicted and experimental results, leading to the proposal of new correlations for the parameters.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2021)
Article
Engineering, Chemical
Wen Liu, Xiaofei Lv, Hao Zhou, Xiangji Dou
Summary: This study investigates the effects of decay on churn flow transition induced by a vane-typed swirler. It proposes a new method to predict the effective length of swirling annular flow transformed from churn flow in a vertical pipe.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Thermodynamics
Youfu Ma, Shanshan Zeng, Jie Shao, Tuo Zhou, Junfu Lyu, Jingfen Li, Peng Lu
Summary: The gas-liquid two-phase countercurrent flow limitation (CCFL) in vertical pipes is a significant topic in various industries. This study conducted a visualization experiment to analyze the effects of pipe diameter and length on the flow behavior of CCFL in vertical pipes. Existing CCFL models were examined but none of them were capable of correlating the effects of pipe diameter and length satisfactorily. A novel CCFL correlation model was proposed based on fluid mechanics analysis, which provides accurate predictions for the CCFL in vertical pipes with varying structural parameters, thereby ensuring safe and efficient operation in nuclear power generation, natural gas extraction, and chemical industries.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2023)
Article
Engineering, Petroleum
Hendy T. Rodrigues, Eduardo Pereyra, Cem Sarica
Article
Energy & Fuels
Arjun Janamatti, Yingda Lu, Sriram Ravichandran, Cem Sarica, Nagu Daraboina
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2019)
Article
Energy & Fuels
Yilin Fan, Eduardo Pereyra, Cem Sarica
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2020)
Article
Energy & Fuels
H. T. Rodrigues, A. Soedarmo, E. Pereyra, C. Sarica
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2020)
Article
Thermodynamics
Anvar Akhiiartdinov, Eduardo Pereyra, Cem Sarica
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2020)
Article
Energy & Fuels
Tea-Woo Kim, Eissa Al-Safran, Eduardo Pereyra, Cem Sarica
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2020)
Article
Energy & Fuels
Jinghao Yang, Yingda Lu, Nagu Daraboina, Cem Sarica
Article
Engineering, Chemical
Gabriel Soto-Cortes, Eduardo Pereyra, Cem Sarica, Fabian Rivera-Trejo, Carlos Torres
Summary: This work provides new experimental data on high viscosity oil-gas flow, analyzing the effects of pipe inclination and liquid viscosity on flow pattern transitions and characterizing subclasses of annular flow pattern. Comparisons with existing models show disagreements, highlighting the need for further studies on the effects of viscosity and pipe inclination in liquid-gas downward flow mixtures.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Engineering, Chemical
Gabriel Soto-Cortes, Eduardo Pereyra, Cem Sarica, Fabian Rivera-Trejo, Carlos Torres
Summary: This study investigates the holdup and pressure gradient behavior of high viscosity oil-gas flow in inclined downward flow, highlighting the transport mechanism through phase slippage and mechanical energy balance. Performance analysis of available mechanistic models reveals the need for a detailed study of the effects of viscosity and pipe inclination in liquid-gas mixtures.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2021)
Review
Energy & Fuels
Elijah Bell, Yingda Lu, Nagu Daraboina, Cem Sarica
Summary: Solid deposition in flow-lines poses a significant challenge for offshore operations, leading to reduced production and increased costs when flow blockage occurs. Thermal management methods, including passive and active approaches, have been developed to ensure flow during production. Passive methods involve insulation and pipeline burial, while active methods require heating techniques to maintain or raise the temperature of the fluid.
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Elijah Bell, Yingda Lu, Nagu Daraboina, Cem Sarica
Summary: Active heating is found to be an effective method for controlling wax deposition in offshore flow-lines, with wax deposits being removed completely, partially, or not at all at different temperatures. The majority of wax can be swiftly removed within an hour, while higher removal temperatures are needed for deposits with higher wax content. In contrast to softer wax, the removal of harder wax seems to occur in two steps, with sudden removal followed by a period of no removal before sudden removal again.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Mechanical
Gabriel Soto-Cortes, Eduardo Pereyra, Cem Sarica, Carlos Torres, Auzan Soedarmo
Summary: Slug flow is a common gas-liquid flow pattern in pipes, and its characteristics play a crucial role in engineering processes. This paper presents a new signal processing analysis method that utilizes statistical algorithms to accurately determine slug flow characteristics, with validation from experimental data showing good results. The proposed algorithm is recommended for slug flow characterization based on its performance against the experimental data.
FLOW MEASUREMENT AND INSTRUMENTATION
(2021)
Article
Mechanics
Vinicius Kramer Scariot, Eduardo Pereyra, Cem Sarica
Summary: The present study focuses on characterizing and modeling the Taylor bubble front and tail velocities in a pipe-to-annulus transition geometry. A new non-invasive method to measure liquid distribution using computer vision was developed. The results show that the Taylor bubble front velocity is dictated by drift, while the tail velocity is related to the liquid fallback rate and bubble coalescence. The choice of characteristic dimension has an important impact on the velocity measurement.
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
(2023)
Article
Engineering, Petroleum
Randy Chandrana Dinata, Cem Sarica, Eduardo Pereyra
SPE PRODUCTION & OPERATIONS
(2020)
Article
Energy & Fuels
Yilin Fan, Eissa Al-Safran, Eduardo Pereyra, Cem Sarica
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2020)
