典型文献
Convective heat transfer of water flow in intersected rock fractures for enhanced geothermal extraction
文献摘要：
Numerous intersected rock fractures constitute the fracture network in enhanced geothermal systems.The complicated convective heat transfer behavior in intersected fractures is critical to the heat recovery in fractured geothermal reservoirs.A series of three-dimensional intersected fracture models is con-structed to perform the flow-through heat transfer simulations.The geometry effects of dead-end fractures (DEFs) on the heat transfer are evaluated in terms of intersected angles,apertures,lengths,and the connectivity.The results indicate that annular streamlines appear in the rough DEF and cause an ellipse distribution of the cold front.Compared to plate DEFs,the fluid flow in the rough DEF enhances the heat transfer.Both the increment of outlet water temperature ΔTout and the ratio of heat production Qr present the largest at the intersected angle of 90° while decline with the decrease of the intersected angle between the main flow fracture (MFF) and the DEFs.The extension of the length of intersected DEFs is beneficial to heat production while enhancing its aperture is not needed,Solely increasing the number of intersected DEFs induces a little increase of heat extraction,and more significant heat pro-duction can be obtained through connecting these DEFs with the MFF forming the flow network.
文献关键词：
中图分类号：
作者姓名：
Yuedu Chen;Zhihong Zhao;Huan Peng
作者机构：
Department of Civil Engineering,Tsinghua University,Beijing,100084,China
文献出处：
引用格式：
[1]Yuedu Chen;Zhihong Zhao;Huan Peng-.Convective heat transfer of water flow in intersected rock fractures for enhanced geothermal extraction)[J].岩石力学与岩土工程学报（英文版）,2022(01):108-122
A类：
DEFs,Solely
B类：
Convective,heat,transfer,water,flow,intersected,rock,fractures,enhanced,geothermal,extraction,Numerous,constitute,network,systems,complicated,convective,behavior,critical,recovery,fractured,reservoirs,series,three,dimensional,models,structed,perform,through,simulations,geometry,effects,dead,end,evaluated,terms,angles,apertures,lengths,connectivity,results,indicate,that,annular,streamlines,appear,cause,ellipse,distribution,cold,front,Compared,plate,fluid,enhances,Both,increment,outlet,temperature,Tout,ratio,production,Qr,present,largest,while,decline,decrease,between,main,MFF,extension,beneficial,enhancing,its,not,needed,increasing,number,induces,little,increase,more,significant,obtained,connecting,these,forming
AB值：
0.459554
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