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Flow in Porous Media and Open Channels
1. Fundamental Concepts in Fluid Mechanics
2. Flow in Porous Media
3. Open-Channel Flow
Flow in Porous Media
Introduction to Porous Media
Definition of Porous Media
Natural Occurrence
Engineering Applications
Characteristics of Porous Materials
Porosity
Total Porosity
Effective Porosity
Primary Porosity
Secondary Porosity
Measurement Methods
Void Ratio
Definition and Calculation
Relationship to Porosity
Degree of Saturation
Definition and Importance
Partial Saturation Effects
Types of Porous Media
Unconsolidated Media
Sands
Gravels
Clays
Consolidated Media
Sandstone
Limestone
Shale
Fractured Rock
Fracture Networks
Dual-Porosity Systems
Matrix-Fracture Interaction
Pore Structure
Pore Size Distribution
Pore Connectivity
Tortuosity
Governing Principles of Single-Phase Flow
Darcy's Law
Historical Development
Experimental Basis
Mathematical Formulation
One-Dimensional Form
Three-Dimensional Form
Validity and Limitations
Range of Applicability
Non-Darcy Flow
Hydraulic Head
Elevation Head
Pressure Head
Total Head
Measurement Methods
Hydraulic Gradient
Definition and Calculation
Direction of Flow
Gradient Determination
Hydraulic Conductivity
Definition and Units
Laboratory Measurement
Constant Head Test
Falling Head Test
Field Measurement
Slug Tests
Pumping Tests
Factors Affecting Conductivity
Grain Size Distribution
Pore Structure
Fluid Properties
Temperature Effects
Intrinsic Permeability
Definition and Units
Relationship to Hydraulic Conductivity
Measurement Methods
Permeability Tensor
Transmissivity
Definition and Calculation
Significance in Aquifer Analysis
Heterogeneity Effects
Storage Properties
Storativity
Definition and Types
Confined Aquifer Storage
Unconfined Aquifer Storage
Specific Storage
Definition and Calculation
Compressibility Effects
Specific Yield
Definition and Measurement
Factors Affecting Yield
Steady-State Seepage
One-Dimensional Flow
Flow through Confined Aquifers
Governing Equations
Boundary Conditions
Analytical Solutions
Flow through Unconfined Aquifers
Governing Equations
Phreatic Surface
Dupuit Assumptions
Flow through Layered Soils
Series Flow
Parallel Flow
Equivalent Hydraulic Conductivity
Two-Dimensional Flow
Laplace Equation for Flow
Boundary Conditions
Prescribed Head
Prescribed Flow
Seepage Face
Anisotropy
Principal Directions
Transformation Methods
Heterogeneity
Layered Media
Non-Uniform Media
Statistical Approaches
Flow Nets
Principles of Construction
Graphical Construction Techniques
Properties of Flow Nets
Equipotential Lines
Flow Lines
Orthogonality
Calculation of Seepage Rate
Calculation of Pore Water Pressure
Use in Engineering Design
Limitations and Accuracy
Applications of Steady Seepage
Seepage under Dams
Flow Patterns
Uplift Pressure
Seepage Control Measures
Exit Gradient
Seepage under Weirs
Flow Patterns
Design Considerations
Seepage into Excavations
Dewatering Systems
Stability Analysis
Well Hydraulics
Steady-State Well Equations
Confined Aquifer Wells
Unconfined Aquifer Wells
Well Interference
Multiple Well Systems
Unsteady-State Seepage
Governing Equation
Diffusion Equation Derivation
Physical Meaning
Initial Conditions
Boundary Conditions
Flow to Wells in Confined Aquifers
Theis Solution
Assumptions and Limitations
Well Function
Application to Pumping Tests
Cooper-Jacob Method
Simplified Analysis
Straight-Line Method
Recovery Tests
Residual Drawdown
Analysis Methods
Flow to Wells in Unconfined Aquifers
Delayed Yield Concepts
Water Table Response
Neuman Solution
Analysis Methods
Aquifer Testing
Pumping Test Design
Test Duration
Pumping Rate Selection
Observation Well Placement
Data Analysis Techniques
Type Curve Matching
Straight-Line Methods
Determination of Hydraulic Properties
Transmissivity
Storage Coefficient
Leakage Parameters
Boundary Effects
Image Well Theory
Barrier Boundaries
Recharge Boundaries
Multiphase Flow in Porous Media
Fundamental Concepts
Fluid Saturation
Water Saturation
Oil Saturation
Gas Saturation
Saturation Constraints
Capillary Pressure
Definition and Measurement
Capillary Pressure Curves
Hysteresis Effects
Wettability
Contact Angle
Wetting and Non-Wetting Phases
Effects on Flow
Relative Permeability
Definition and Measurement
Dependence on Saturation
End-Point Values
Hysteresis
Two-Phase Flow
Governing Equations
Fractional Flow Theory
Displacement Mechanisms
Drainage
Imbibition
Immiscible Displacement
Buckley-Leverett Theory
Fractional Flow Curves
Shock Fronts
Breakthrough Time
Frontal Advance
Displacement Efficiency
Sweep Efficiency
Applications in Petroleum Engineering
Oil Recovery Processes
Primary Recovery
Secondary Recovery
Enhanced Oil Recovery
Waterflooding
Injection Patterns
Sweep Efficiency
Applications in Environmental Engineering
NAPL Transport
Contaminant Remediation
Soil Vapor Extraction
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3. Open-Channel Flow