论文成果
Simulation of upward gas-hydrate slurry multiphase flow in a vertical concentric annulus for natural gas hydrate solid fluidization exploitation
摘要:The accurate simulation of upward multiphase flow of hydrate slurry in the annulus is one of the key scientific unsolved issues in natural gas hydrate solid fluidization exploitation. In this work, the upward multiphase flow of hydrate slurry in a vertical concentric annulus is simulated. The hydrate slurry hydrodynamic models suitable for pseudo-single-phase flow, bubbly flow, slug flow, and annular flow are proposed, respectively. Finally, the hydrate decomposition kinetic model is combined with the established annulus hydrate slurry multiphase flow model to simulate the multiphase flow of hydrate slurry in the annulus. The factors affecting flow behaviors are analyzed. During the upward flow in the annulus, the hydrate slurry temperature first decreases and then increases. As the inlet temperature increases, the fluid temperature, hydrate decomposition rate, and gas superficial velocity increase. During the upward flow in the annulus, hydrate may be formed again, which indicates that the error may be magnified due to ignoring hydrate formation. The larger the flow rate, the smaller the length of the slug flow. The larger the hydrate volume fraction, the higher the starting point of hydrate decomposition. These findings are of practical value to give a further understanding of hydrate slurry multiphase flow, which can promote further engineering application of natural gas hydrate solid fluidization exploitation. Published under an exclusive license by AIP Publishing.
ISSN号:1070-6631
卷、期、页:卷: 33期: 10
发表日期:2021-10-01
影响因子:3.514000
期刊分区(SCI为中科院分区):三区
收录情况:SCIE(科学引文索引网络版),EI(工程索引)
发表期刊名称:PHYSICS OF FLUIDS
参与作者:陈玉川,吕晓方,柳扬,洪炳沅
通讯作者:康琦,余佳涵,白宗翰
第一作者:宋尚飞,史博会,王玮,宫敬
论文类型:期刊论文
论文概要:康琦,宋尚飞,余佳涵,史博会,陈玉川,吕晓方,柳扬,白宗翰,洪炳沅,王玮,宫敬,Simulation of upward gas-hydrate slurry multiphase flow in a vertical concentric annulus for natural gas hydrate solid fluidization exploitation,PHYSICS OF FLUIDS,2021,卷: 33期: 10
论文题目:Simulation of upward gas-hydrate slurry multiphase flow in a vertical concentric annulus for natural gas hydrate solid fluidization exploitation