Fractional Calculus for Hydrology, Soil Science and Geomechanics

Fractional Calculus for Hydrology, Soil Science and Geomechanics

An Introduction to Applications

Su, Ninghu

Taylor & Francis Ltd

11/2020

358

Dura

Inglês

9781138491663

15 a 20 dias

725

Descrição não disponível.
Application of Fractional Calculus in Water Flow and Related Processes

Overview

Objectives of this book

A brief description of key concepts

Notation in the book

Mathematical Preliminaries

Introduction

Integral transforms

Asymptotic analysis

Special Functions

Fundamental solution, Green function, delta functions and generalized functions

Fractional integration and fractional differentiation

Summary

Essential Properties of Soils and Aquifers as Porous Media

Introduction: Soils and aquifers as porous media

Descriptive concepts and definitions of soils and aquifers

Fundamental equations of flow in soils and aquifers

Applicability of Darcy's law

Traditional and new parameters for hydraulic properties

Similarity, scales, models and measurements

Other forces coupled with the flow of fluids in porous media

Heterogeneities and isotropy

Summary

Transition from Classic Diffusion to Anomalous Diffusion- The evolution of concepts and ideas

Introduction

The inception of models based on fractional calculus in geoscience and related fields

Theory, models and parameters for water flow and solute transport in porous media

Relationships and differences between anomalous diffusion and scale-dependent and time-dependent transport processes

Dimensions of the parameters in fPDEs

Variable-order fractional derivatives and related fPDEs

Summary

Fractional Partial Differential Equations for Water Movement in Soils

Introduction

Integer calculus-based models for water flow in soils

Fractional calculus-based models for water movement in soils

Conservation of mass in the context of fPDEs

fPDEs for coupled water movement, energy transfer, gas flow and solute transport in porous media

Functional-order fractional partial differential equations

Exchange of water between mobile and immobile zones

Summary

Applications of Fractional Partial Differential Equations to Infiltration and Water Movement in Soils

Introduction

Background and connections between different equations of infiltration

Equations of infiltration derived from fractional calculus with the concentration boundary condition

Infiltration into soils on hillslopes

Infiltration equations derived from an fPDE with a given flux on the soil surface

Water exchange between large and small pores

Example of solutions for water movement in a soil of finite depth

Summary

Fractional Differential Equations for Solute Transport in Soils

Introduction

Solute transport in non-swelling soils

Concurrent water flow and solute transport in swelling soils

Fractional Partial Differential Equations for Anomalous Solute Transport in Soils

Dimensions of the parameters in multi-term fPDEs

Functional-order fPDEs

The fPDE and its solution for solute exchange between mobile and immobile zones

Fractional flux-residential solute concentration relationships during anomalous transport

Applications of fPDEs for coupled solute transport in swelling and non-swelling soils

Summary

Hydraulics of Anomalous Flow on Hillslopes, in Catchment Networks and Irrigated Fields

Introduction

Rainfall-infiltration-runoff relations on a planar hillslope

Rainfall-infiltration-runoff relations on convergent and divergent hillslopes

Solute transport by runoff on hillslopes

Related topics

Streamflow through catchment networks

Anomalous flow during irrigation

Summary

Fractional Partial Differential Equations for Groundwater Flow

Introduction

Governing equations for isothermal groundwater flow in confined aquifers

Governing equation for groundwater flow in unconfined aquifers

Unified concepts and equations for groundwater flow in confined and unconfined aquifers

Radial flow and hydraulics of wells in confined and unconfined aquifers

Earth tides and barometric effects on groundwater

Other factors related to model construction for groundwater flow

fPDEs for isothermal groundwater flow in unconfined aquifers

fPDEs for isothermal groundwater flow in confined aquifers

Distributed-order fPDEs in Cartesian coordinates

fPDEs for hydraulics of anomalous radial flow in wells on a horizontal base

Exchange of water between mobile and immobile zones

Example: Solutions of fPDEs for groundwater flow in aquifers subject to boundary conditions of the first kind

Groundwater flow as a multiphase flow

Summary

Fractional Partial Differential Equations for Solute Transport in Groundwater

Introduction

fPDE-based models for solute transport in different dimensions

Fractional conservation of mass

Symmetrical fADE for solute transport

fPDEs for reactive solute transport with sink and source terms

fPDEs of distributed order for solute transport in aquifers

Solute transfer between mobile and immobile zones

fPDEs for flux and residential solute relationships

fPDEs of distributed order and their asymptotic solutions

Radial anomalous solute transport in groundwater

Functional-order fPDEs

Multi-dimensional symmetrical fPDEs with variable and functional orders

Tempered anomalous solute transport

Summary

Fractional Partial Differential Equations, Poroviscoelastic Media and Geomechanics

Introduction

Basic concepts regarding poroviscoelastic materials, and relationships between them

Approaches to viscoelastic materials with linear elasticity

Fractional calculus-based models for linear viscoelasticity and poroviscoelasticity

Summary

Bibliography
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Fractional Derivatives;Fractional Partial Differential Equations;water infiltration and movement in soils and aquifers;Soil Science;heat transfer in soils and aquifers;Immobile Zones;movement of nutrients, solutes and contaminants in soils and aquifers;Fractional Calculus;analytical solutions and numerical methods for fractional partial differential equations;Moisture Content;mechanics of fluid flow and material transport in swelling and viscoelastic media;Non-swelling Soils;hydrology;Porous Media;Time Fractional Diffusion Equation;geomechanics;Swelling Soils;Fractional PDEs;Residential Solute Concentrations;Confined Aquifers;Unconfined Aquifers;Solute Transport;Laplace Transform;Cumulative Infiltration;Functional Order;Hydraulic Conductivity;Mittag Leffler Function;Fractional Diffusion Wave Equation;Space Fractional Derivative;Asymptotic Solution;Hydraulic Head;Final Infiltration Rate