Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Design Example: Design of an Irrigation Channel

Design Example: Design of an Irrigation Channel

Trapezoidal channels are widely used in irrigation systems due to their cost-effectiveness and efficiency in conveying water. Trapezoidal channels feature a flat bottom and sloping sides, making them stable and easier to construct compared to other shapes. The bottom width and side slope ratio are determined based on the required flow capacity and site conditions. The side slope is kept gentle for unlined channels to prevent soil erosion.Hydraulic parameters in channel design include the flow...

Design Example: Creating a Hydraulic Model of a Dam Spillway

Design Example: Creating a Hydraulic Model of a Dam Spillway

Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.

Rapidly Varying Flow

Rapidly Varying Flow

Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...

Typical Model Studies

Typical Model Studies

Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.

Gradually Varying Flow

Gradually Varying Flow

Gradually varying flow (GVF) in open channels describes situations where water depth changes slowly along the channel due to factors like non-uniform bed slope, channel shape variations, or obstructions. This flow type occurs when the depth adjusts gradually to balance gravitational forces, shear forces, and energy requirements, resulting in a low rate of depth change.Characteristics of Gradually Varying FlowGVF is commonly observed in natural streams, rivers, and canals, where flow depth...

Modeling and Similitude

Modeling and Similitude

Scaled modeling is a fundamental technique in engineering, enabling the study of large and complex systems by creating smaller, manageable replicas that recreate critical characteristics of the original. In hydrology and civil infrastructure, for example, scaled models of dams help analyze water flow, turbulence, and pressure. This method allows for accurate predictions of real-world behavior within a controlled environment, significantly reducing the cost and time involved in full-scale...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Ghislain de Marsily: An Appreciation.

Ground water·2024

Same author

Including Vertical Fault Structures in Layered Groundwater Flow Models.

Ground water·2021

Same author

A conjunctive management framework for the optimal design of pumping and injection strategies to mitigate seawater intrusion.

Journal of environmental management·2021

Same author

Normalized difference vegetation index as the dominant predicting factor of groundwater recharge in phreatic aquifers: case studies across Iran.

Scientific reports·2020

Same author

Interaction of lake-groundwater levels using cross-correlation analysis: A case study of Lake Urmia Basin, Iran.

The Science of the total environment·2020

Same author

Assessment of sustainable groundwater resources management using integrated environmental index: Case studies across Iran.

The Science of the total environment·2019

Search research articles

Related Experiment Video

Updated: Jul 3, 2026

Measuring Carbon-based Contaminant Mineralization Using Combined CO2 Flux and Radiocarbon Analyses

Measuring Carbon-based Contaminant Mineralization Using Combined CO₂ Flux and Radiocarbon Analyses

Published on: October 21, 2016

Using MODFLOW 2000 to model ET and recharge for shallow ground water problems.

Rebecca C Doble¹, Craig T Simmons, Glen R Walker

¹CSIRO Land and Water, PMB 2 GlenOsmond, South Australia 5064, Australia. rebecca.doble@csiro.au

|July 16, 2008

Summary

Shallow groundwater systems require continuous modeling of recharge and evapotranspiration. This study modifies MODFLOW to better represent these fluxes, improving accuracy for water table dynamics and salinization studies.

More Related Videos

Visualizing Hyporheic Flow Through Bedforms Using Dye Experiments and Simulation

Visualizing Hyporheic Flow Through Bedforms Using Dye Experiments and Simulation

Published on: November 18, 2015

A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump

A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump

Published on: June 1, 2022

Related Experiment Videos

Last Updated: Jul 3, 2026

Measuring Carbon-based Contaminant Mineralization Using Combined CO2 Flux and Radiocarbon Analyses

Measuring Carbon-based Contaminant Mineralization Using Combined CO₂ Flux and Radiocarbon Analyses

Published on: October 21, 2016

Visualizing Hyporheic Flow Through Bedforms Using Dye Experiments and Simulation

Visualizing Hyporheic Flow Through Bedforms Using Dye Experiments and Simulation

Published on: November 18, 2015

A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump

A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump

Published on: June 1, 2022

Area of Science:

Hydrogeology
Environmental Science
Water Resource Management

Background:

Shallow groundwater systems exhibit significant flux variations due to small water table changes.
Accurate modeling requires nonlinear relationships for recharge and evapotranspiration in thin unsaturated zones.
Existing MODFLOW packages may not adequately represent dynamic shallow groundwater conditions.

Purpose of the Study:

To modify MODFLOW's recharge and evapotranspiration packages for continuous, head-dependent flux representation.
To improve the modeling of groundwater systems with shallow water tables.
To investigate salinization patterns on a floodplain using enhanced groundwater flux modeling.

Main Methods:

Modified MODFLOW 2000 recharge and segmented evapotranspiration packages.
Developed a continuous recharge-discharge function dependent on head.
Applied the modified model to a saline, semiarid floodplain.

Main Results:

The enhanced function allows for continuous representation of groundwater flux as a function of head.
The modified model accurately captures recharge and evapotranspiration dynamics in shallow groundwater environments.
Spatial salinization patterns were analyzed on the floodplain.

Conclusions:

Continuous groundwater flux modeling is essential for shallow groundwater systems.
The modified MODFLOW approach enhances the representation of recharge and evapotranspiration.
This methodology aids in understanding and managing salinization in arid and semiarid regions.