IMECH-IR  > 流固耦合系统力学重点实验室
Three-dimensional Eulerian modeling of gas-liquid-solid flow with gas hydrate dissociation in a vertical pipe
Li P(李鹏); Zhang XH(张旭辉); Lu XB(鲁晓兵)
Source PublicationCHEMICAL ENGINEERING SCIENCE
2019-03-16
Volume196Pages:145-165
ISSN0009-2509
Abstract

The pipe transportation of gas hydrate-bearing sediments (GHBS)(1) is one of the key problems in mechanical-thermal exploitation of gas hydrate (GH)(2) in marine stratum. It is a gas-liquid-solid (methane gas-seawater-GHBS particles) three-phase flow, accompanied by GH dissociation. In this study, a three-dimensional Eulerian model combined with the kinetic theory of granular flow (KTGF) was adopted to simulate the gas-liquid-solid flow with GH dissociation. The commercial CFD software FLUENT 16.2 was employed, considering the hydrodynamics, heat and mass transfer, and GH dissociation simultaneously. A kinetic model for GH dissociation in the GHBS particles is presented, considering the influence of multiphase flow on dissociation rate. The model can capture the transition from the initial liquid-solid two-phase flow to gas-liquid-solid three-phase flow, describing the distribution of the phase volume fraction, velocity, temperature, and dissociation rate. The interaction between GH dissociation and multiphase flow is discussed. The simulation results indicate that the continuous production of gas bubbles by GH dissociation leads to more violent fluctuations in the pressure gradient and a more marked elevation of the solid particles compared with the liquid-solid two-phase flow without GH dissociation. In addition, the effect of GH dissociation on the multiphase flow under different hydrate saturations was analyzed. (C) 2018 Elsevier Ltd. All rights reserved.

KeywordMarine gas hydrate-bearing sediment Hydrate dissociation model CFD Gas-liquid-solid Eulerian model
DOI10.1016/j.ces.2018.10.053
Indexed BySCI ; EI
Language英语
WOS IDWOS:000456795700013
WOS KeywordCIRCULATING FLUIDIZED-BED ; OXY-FUEL COMBUSTION ; CFD SIMULATIONS ; MULTIPHASE FLOW ; MASS-TRANSFER ; HEAT ; HYDRODYNAMICS ; SENSITIVITY ; REACTOR ; MOTION
WOS Research AreaEngineering, Chemical
WOS SubjectEngineering
Funding OrganizationNational Natural Science Foundation of China [51639008] ; [2017027]
Classification二类/Q1
Ranking1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78471
Collection流固耦合系统力学重点实验室
Affiliation{Zhang, Xuhui} Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China、Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Li P,Zhang XH,Lu XB. Three-dimensional Eulerian modeling of gas-liquid-solid flow with gas hydrate dissociation in a vertical pipe[J]. CHEMICAL ENGINEERING SCIENCE,2019,196:145-165.
APA Li P,Zhang XH,&Lu XB.(2019).Three-dimensional Eulerian modeling of gas-liquid-solid flow with gas hydrate dissociation in a vertical pipe.CHEMICAL ENGINEERING SCIENCE,196,145-165.
MLA Li P,et al."Three-dimensional Eulerian modeling of gas-liquid-solid flow with gas hydrate dissociation in a vertical pipe".CHEMICAL ENGINEERING SCIENCE 196(2019):145-165.
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