Heat transfer for fully developed stratified wavy gas–liquid two-phase flow in a circular cross-section receiver

Duan, Jimiao; Liu, Huishu; Gong, Jing; Jiao, Guangwei

doi:10.1016/j.solener.2015.05.023

Cited by 13 publications

(12 citation statements)

References 29 publications

(63 reference statements)

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“…Recently, the rapid economic development in China with the need for oil keeping up, the oil import dependency rapid rises, up to 64.4% in 2017, and exceeds the internationally recognized warning level 50% [1,2] . It makes economic security under potential threat because of the energy factor [3,4]. As oil and gas exploiting onshore and offshore, deep water reserving abundant oil and gas will be key production area in a short time.…”

Section: Introductionmentioning

confidence: 99%

A model of wax deposition under oil-gas two-phase stratified flow in horizontal pipe

Duan

Liu

et al. 2018

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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A model of wax deposition based on molecular diffusion mechanism, for oil-gas two-phase stratified pipe flow is developed. In the model, unidirectional fully developed flow analyses of momentum, heat and mass transfer are presented. And, a cube cage model is used to describe the wax deposit structure considering the effect of oil flow shear on the deposit. Calculation of wax deposit is compared well with a flow loop experiment. In particular, the model could give the wax deposit forming a crescent shape at the cross section of pipe, which is observed in different experiments. Furthermore, the cause of forming a crescent shape is revealed, which is indicated by the non-uniform circumferential distribution of mass flux for wax deposition along the pipe wall wetted by the oil. The mass flux from oil bulk flow to the oil-deposit interface is closely related to three parameters, diffusivity at oil-deposit interface, the temperature gradient at the oil-deposit interface at different time, and the slope of the wax solubility curve at oil-deposit interface temperature.

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Section: Introductionmentioning

confidence: 99%

A model of wax deposition under oil-gas two-phase stratified flow in horizontal pipe

Duan

Liu

et al. 2018

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…Drilling fluid temperature is too high, not only affect its performance, but also influence the ambient temperature of downhole drilling tools and guide testing tools, even influence wellbore stability, service life and drilling rate [12].…”

Section: Introductionmentioning

confidence: 99%

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

Zhong¹,

Peng²,

Jiang³

2018

IJHT

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Drilling fluid cooling technology is one of the key techniques of drilling technology. In order to study the influence of mechanism of drilling fluid on temperature and pressure, especially on thermophysical parameters and rheological properties, as well as the heat transfer mechanism between bubbles and liquid flow inside and outside the liquid film by test, simulation and theoretical research. Firstly, the test on thermophysical parameters of 10 kinds of drilling fluids at 7 different temperatures and 3 different pressure were analyzed, which would provide the key parameters for the establishment of downhole gas-liquid two-phase model. Then, study on rheology of cement slurry under high temperature and high pressure, and its heat transfer equations were derived. The results showed that the specific heat of mud decreases with the increase of density, and the thermal conductivity increases with the increase of density, almost linearly. Besides, gas is the main factor affecting heat transfer inside the well.

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“…The pipe flow together with phase change is commonly encountered in various heat and mass transfer processes over the past four decades, for instance, in petroleum and chemical processing industry, steam-generating equipment, nuclear reactors, geothermal fields, heat exchangers, cooling systems, and solar energy system [1][2][3][4]. In petroleum transportation, two-phase flow characterization is a very common and economic technique, where vapor-liquid two-phase stratified flow is often observed in horizontal or slightly inclined systems [5,6].…”

Section: Introductionmentioning

confidence: 99%

Gas-Liquid Stratified Flow in Pipeline with Phase Change

He¹,

Li²,

Wang³

et al. 2018

Heat Transfer - Models, Methods and Applications

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When the natural gas with vapor is flowing in production pipeline, condensation occurs and leads to serious problems such as condensed liquid accumulation, pressure and flow rate fluctuations, and pipeline blockage. This chapter aims at studying phase change of vapor and liquid-level change during the condensing process of water-bearing natural gas characterized by coupled hydrothermal transition and phase change process. A hydrothermal mass transfer coupling model is established. The bipolar coordinate system is utilized to obtain a rectangular calculation domain. An adaptive meshing method is developed to automatically refine the grid near the gas-liquid interface. During phase change process, the temperature drop along the pipe leads to the reduction of gas mass flow rate and the rise of liquid level, which results in further pressure drop. Latent heat is released during the vapor condensing process which slows down the temperature drop. Larger temperature drop results in bigger liquid holdup while larger pressure drop causes smaller liquid holdup. The value of velocity with phase change is smaller than that without phase change while the temperature with phase change is bigger. The highest temperature locates in gas phase. But near the pipe wall the temperature of liquid region is higher than gas region.

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Heat transfer for fully developed stratified wavy gas–liquid two-phase flow in a circular cross-section receiver

Cited by 13 publications

References 29 publications

A model of wax deposition under oil-gas two-phase stratified flow in horizontal pipe

A model of wax deposition under oil-gas two-phase stratified flow in horizontal pipe

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

Gas-Liquid Stratified Flow in Pipeline with Phase Change

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