A Theoretical Study on the Governing Laws for Fluid Transport in Rough Fractures
粗糙裂缝中流体输运规律的理论研究
基本信息
- 批准号:9804789
- 负责人:
- 金额:$ 15.05万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:1998
- 资助国家:美国
- 起止时间:1998-07-15 至 2002-06-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
9804789GeNatural rock fractures exist at all scales in the earth's upper crust. They play a major role in groundwater movement, solute transport, and waste isolation in geologic media. Characterizing fluid flow and mass transport in fractured rocks depends on our knowledge of how fluid transports through individual fractures. Yet fluid flow in fractures bounded by two rough surfaces is complex. Important questions on the validity of the cubic law and the Reynolds equation for rough fractures have been studied by many. The general conclusions are that the cubic law can only provide a qualitative description of flow rate, the Reynolds equation is not valid for rough fractures and effects of aperture and tortuosity need to be included in better governing flow laws. The primary goals of this research are (1) to systematically explore and quantify the effects of fracture roughness, tortuosity, and the formation of flow channeling on governing flow laws, and (2) to develop a better governing flow law for rough fractures by understanding the fluid transport mechanisms. Specifically, I will attempt to achieve the following objectives: (1) develop a rational method to characterize fracture geometry of natural rocks, (2) investigate the formation of channelized flow paths in generated and profiled fractures, (3) examine the conditions under which the modified Reynolds equation is valid, (4) identify the transitional flow regime from Darcian to non-Darcian flow, and (5) construct a better governing law that captures the dominant features of fluid transport in rough fractures. I will employ an array of theoretical approaches and utilize the existing lab experimental data to achieve these objectives. The Reynolds equation, the modified Reynolds equation including geometric variables of local aperture and tortuosity, and the Navier-Stokes equations will be solved numerically to simulate fluid flow in rough fractures. The Lattice Boltzmann method will be used for simulating both linear and non-linear fluid transport in fractures with complex geometries. The proposed research represents a comprehensive theoretical attempt to examine the governing laws for fluid transport in rough rock fractures.
9804789节岩骨折在地球上皮的所有尺度上都存在。 它们在地质媒体中的地下水运动,溶质运输和隔离中发挥了重要作用。 表征流体流量和骨折岩石中的质量转运取决于我们对流体如何通过单个裂缝传输的知识。 然而,由两个粗糙表面界定的裂缝中的流体流很复杂。 许多人都研究了有关立方法和雷诺方程的有效性的重要问题。 总体结论是,立方定律只能提供对流量的定性描述,雷诺方程对于粗糙的裂缝无效,并且需要包括在更好的管理流量法则中。 这项研究的主要目标是(1)系统地探索和量化断裂粗糙度,曲折度和流动渠道对管流律的形成的影响,以及(2)通过了解流体运输机制来为粗糙的裂缝制定更好的管理流量法。 Specifically, I will attempt to achieve the following objectives: (1) develop a rational method to characterize fracture geometry of natural rocks, (2) investigate the formation of channelized flow paths in generated and profiled fractures, (3) examine the conditions under which the modified Reynolds equation is valid, (4) identify the transitional flow regime from Darcian to non-Darcian flow, and (5) construct a better governing law that captures the裂缝中流体转运的主要特征。 我将采用一系列理论方法,并利用现有的实验室实验数据来实现这些目标。 雷诺方程,修改的雷诺方程,包括局部孔径和曲折的几何变量以及Navier-Stokes方程的数值求解,以模拟粗糙断裂中的流体流动。 晶格玻尔兹曼方法将用于模拟具有复杂几何形状的裂缝中的线性和非线性流体转运。 拟议的研究代表了一项全面的理论尝试,以检查粗糙岩石裂缝中流体运输法律的法律。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Shemin Ge其他文献
A Possible Causative Mechanism of Raton Basin, New Mexico and Colorado Earthquakes Using Recent Seismicity Patterns and Pore Pressure Modeling
利用最近的地震活动模式和孔隙压力模型研究拉顿盆地、新墨西哥州和科罗拉多州地震的可能成因机制
- DOI:
- 发表时间:
2017 - 期刊:
- 影响因子:0
- 作者:
J. Nakai;M. Weingarten;A. Sheehan;S. Bilek;Shemin Ge - 通讯作者:
Shemin Ge
Shemin Ge的其他文献
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{{ truncateString('Shemin Ge', 18)}}的其他基金
Groundwater Connection between Glaciers and Streams under a warming Climate
气候变暖下冰川和溪流之间的地下水联系
- 批准号:
2325368 - 财政年份:2023
- 资助金额:
$ 15.05万 - 项目类别:
Standard Grant
Dynamic Response of Watershed Subsurface System to Extreme Rainfall Events
流域地下系统对极端降雨事件的动态响应
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1834290 - 财政年份:2018
- 资助金额:
$ 15.05万 - 项目类别:
Continuing Grant
Collaborative Research: Numerical Modeling of Fluid Flow and Transport during out of Sequence Thrusting and Underplating: Application to the NanTroSEIZE Investigation Area
合作研究:乱序推进和底侵过程中流体流动和传输的数值模拟:在 NanTroSEIZE 调查区域的应用
- 批准号:
0727485 - 财政年份:2007
- 资助金额:
$ 15.05万 - 项目类别:
Standard Grant
Integrated Structural and Hydrologic Charactrization of Fault Zone Permeability at Well Field to Regional Scales
区域尺度井场断裂带渗透性的综合结构和水文表征
- 批准号:
0610027 - 财政年份:2006
- 资助金额:
$ 15.05万 - 项目类别:
Continuing Grant
Collaborative Research: Modeling of Earthquake-Related Pore Pressure Changes and Fluid Flow in Subduction Zones: Implications for Planning of Drilling and Long-Term Observatories
合作研究:俯冲带地震相关孔隙压力变化和流体流动建模:对钻井和长期观测站规划的影响
- 批准号:
0241565 - 财政年份:2003
- 资助金额:
$ 15.05万 - 项目类别:
Standard Grant
Three-Dimensional Modeling of Fluid and Thermal Transport within the Barbados Accretionary Complex
巴巴多斯增生复合体内流体和热传输的三维模型
- 批准号:
9810959 - 财政年份:1998
- 资助金额:
$ 15.05万 - 项目类别:
Standard Grant
Quantitative Studies of Coupled Fluid Flow, Rock Deformation, Heat Transfer and Mass Transport in Deforming Geologic Systems
变形地质系统中耦合流体流动、岩石变形、传热和质量传递的定量研究
- 批准号:
9418561 - 财政年份:1995
- 资助金额:
$ 15.05万 - 项目类别:
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