Computational Model for Gradually Varied Flow in Channel Networks with Hydraulic Structures

Santiago-Collazo, Félix L.; Luis, Félix

doi:10.1061/(asce)ir.1943-4774.0001388

Cited by 5 publications

(3 citation statements)

References 16 publications

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“…The system's solution consists of solving the water depth in the continuity equation (Equation ) iteratively because of the system's nonlinearity. Therefore, the Newton‐Rapshon method was selected as the iterative solver technique (Santiago‐Collazo & Silva‐Araya, 2019). This technique consists of solving the system iteratively, at each time step, until the difference between two successive iterations is less than a specified tolerance (e.g., 10 −7 m).…”

Section: Methodsmentioning

confidence: 99%

Compound Inundation Modeling of a 1‐D Idealized Coastal Watershed Using a Reduced‐Physics Approach

Santiago‐Collazo,

Bilskie,

Bacopoulos

et al. 2024

Water Resources Research

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Low‐gradient coastal watersheds are susceptible to flooding caused by various flows such as rainfall‐runoff, astronomical tides, storm surges, and riverine flows. Compound flooding occurs when at least one coastal flood driver occurs simultaneously or in close succession with a pluvial and/or fluvial flood driver, such as during a tropical cyclone event. This study presents a one‐dimensional (1‐D), reduced‐order physics compound inundation model tested over an idealized coastal watershed transect under various forcing conditions (e.g., coastal and pluvial) that varied in magnitude, time, and space. This study aims to evaluate each flooding mechanism and the associated hydrodynamic responses by performing a sensitivity analysis and developing a non‐linear equation that could correlate the flood drivers with the severity of its flood. Compound inundation levels are affected by the magnitude and timing of each flooding mechanism. Results highlight the need to consider momentum exchange during a compound event and the importance of reduced‐physics approaches that can improve the interaction between flood drivers when paired with a moving coupling node approach. The desire is a more holistic compound inundation model that can be a critical tool for decision‐makers, stakeholders, and authorities who provide evacuation planning to save human lives and enhance resilience.

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Section: Methodsmentioning

confidence: 99%

Compound Inundation Modeling of a 1‐D Idealized Coastal Watershed Using a Reduced‐Physics Approach

Santiago‐Collazo,

Bilskie,

Bacopoulos

et al. 2024

Water Resources Research

Self Cite

View full text Add to dashboard Cite

show abstract

“…7) iteratively because of the system's non-linearity. Therefore, the Newton-Rapshon method was selected as the iterative solver technique (Santiago-Collazo & Silva-Araya, 2019). This technique consists of solving the system iteratively, at each time step, until the difference between two successive iterations is less than a specified tolerance (e.g., 10 -7 m).…”

Section: Watershed Hydraulics Module (Whm)mentioning

confidence: 99%

Pre-Print: Compound Inundation Modeling of a 1-D Idealized Coastal Watershed Using a Reduce-Physics Approach

Santiago-Collazo,

Bilskie,

Bacopoulos

et al. 2024

Preprint

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Low-gradient coastal watersheds are susceptible to flooding caused by various flows such as rainfall-runoff, astronomical tides, storm surges, and riverine flows. Compound flooding occurs when at least one coastal flood driver occurs simultaneously or in close succession with a pluvial and/or fluvial flood driver, such as during a tropical cyclone event. This study presents a one-dimensional (1-D), reduced-order physics compound inundation model tested over an idealized coastal watershed transect under various forcing conditions (e.g., storm surge, astronomical tides, and rainfall) that varied in magnitude, time, and space. This study aims to evaluate each flooding mechanism and the associated hydrodynamic responses to identify generalized coastal transition zones and enhance the production of flood maps for varying regions in a coastal watershed. Compound inundation levels are affected by the magnitude and timing of each flooding mechanism. The desire is a more holistic compound inundation model that can be a critical tool for decision-makers, stakeholders, and authorities who provide evacuation planning to save human lives and enhance resilience.

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“…Detalles del MSS y como se añaden las estructuras hidráulicas dentro del algoritmo se pueden obtener en Santiago-Collazo y Silva-Araya [8]. A continuación se presentan dos casos donde se aplicó el MSS con estructuras hidráulicas.…”

Section: Metodologíaunclassified

Modelo Hidráulico para Redes de Canales con Estructuras Hidráulicas

Santiago-Collazo¹,

Araya²

2019

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Redes de canales; flujo gradualmente variado; método de solución simultánea para canales; análisis y diseño de estructuras hidráulicas. ResumenMuchos sistemas de irrigación contienen sistemas de canales complejos que incluyen estructuras de control. La regulación y control de la distribución de agua para regar los cultivos es necesaria para una agricultura sostenible. El diseño y análisis de estructuras hidráulicas es esencial para la conservación y el uso eficiente del agua dentro del sistema. Este artículo presenta las capacidades de un modelo hidráulico para resolver redes de canales con estructuras hidráulicas. El algoritmo utiliza el Método de Solución Simultanea (MSS) para resolver las ecuaciones de continuidad y energía en varios tramos del canal. Los resultados obtenidos incluyen profundidades del agua, distribución de flujos y dimensionamiento de estructuras hidráulicas. Se presentan dos aplicaciones: la modelación de un tramo del Distrito de Riego del Valle de Lajas (DRVL) de Puerto Rico y una red de canales con diseño y análisis de diferentes estructuras hidráulicas. El MSS ha probado ser excelente para aplicaciones prácticas debido a su fácil uso, capacidades y precisión. KeywordsChannel network; gradually-varied flow; simultaneous solution method; analysis and design of hydraulic structures. AbstractMany irrigation systems comprise complex channel systems including control structures. Regulation and control of water distribution for crop irrigation is necessary for sustainable agriculture. Design and analysis of hydraulic structures is essential for efficient use and conservation of water. This article presents the capabilities of a hydraulic model for solution of channel networks with hydraulic structures. The algorithm uses the Simultaneous Solution Method (SSM) to solve the continuity and energy equations in several channel reaches. The results include water depths, distribution of flows and dimensions of hydraulic structures. Two applications are presented: modeling of a reach of the Lajas Valley Irrigation System in Puerto Rico and, a channel network with design and analysis of different hydraulic structures. The SSM proved to be excellent for practical applications due to ease of use, capabilities and precision.

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Computational Model for Gradually Varied Flow in Channel Networks with Hydraulic Structures

Cited by 5 publications

References 16 publications

Compound Inundation Modeling of a 1‐D Idealized Coastal Watershed Using a Reduced‐Physics Approach

Compound Inundation Modeling of a 1‐D Idealized Coastal Watershed Using a Reduced‐Physics Approach

Pre-Print: Compound Inundation Modeling of a 1-D Idealized Coastal Watershed Using a Reduce-Physics Approach

Modelo Hidráulico para Redes de Canales con Estructuras Hidráulicas

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