Essence of MIKE 21C (FDM Numerical Scheme): Application on the River Morphology of Bangladesh

Sarker, Shiblu

doi:10.4236/ojmsi.2022.102006

Cited by 17 publications

(31 citation statements)

References 5 publications

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“…In addition, the gauge pressure at P1 is greater than that at P2 due to the direction of flow (Figure 8a). In addition to other metrics, |β| increases linearly with discharge (Figure 8b), consistent with the gauge pressure, and the value of |β| for P1 is greater than P2 due to the damping effect or head loss [1][2][3]13].…”

Section: Resultsmentioning

confidence: 52%

“…where L is the length of the pipe, d is the inner diameter of the pipe, ρ is the density of the water, U is the velocity, and f is the friction factor. This friction factor ( f ) is a function of the surface roughness of the pipe, Reynolds number (Re = 4Q πdν ), and the flow regime, i.e., laminar flow, transition zone, and turbulent flow [1,2,13]. Moody diagrams [1] are frequently used by engineers to depict the friction factor as a function of Reynolds number and flow regime.…”

Section: Pressure Losses In the Flow Systemmentioning

confidence: 99%

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Spectral Properties of Water Hammer Wave

Sarker

2022

Applied Mechanics

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The prevention of excessive pressure build-up in pipelines requires a thorough understanding of water hammer phenomena. Using theoretical techniques, researchers have investigated this phenomenon and proposed productive solutions. In this article, we demonstrate a power spectral density approach on the pressure wave generated by water hammer in order to improve our understanding on the frequency domain approach as well as their fractal nature and complexity. This approach has the ability to explain some valuable attributes of the unsteady flow at a specific section, such as vulnerability and complexity that allow us more dynamic variables for effective analysis of pipe network design. Therefore, we aim to test a simple pipe system to simulate the proposed approach, which may offer useful physical information about pipeline network construction. The proposed method is expected to be beneficial and effective in acquiring a better understanding of the complicated features of unsteady flows as well as the sound acoustics within a pipe system and its design. In specific, our findings demonstrate the possibility for engineering design to comprehend the robustness, vulnerability, and complexity of pipe networks, as well as their sustainable construction.

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Section: Resultsmentioning

confidence: 52%

Section: Pressure Losses In the Flow Systemmentioning

confidence: 99%

Spectral Properties of Water Hammer Wave

Sarker

2022

Applied Mechanics

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“…Climate is a proba-40 bility distribution (PDF) over which the weather oscillates. Climate is determined by the 41 properties of the Earth system and can be thought of as a boundary value problem (see this 42 terminology [3,4] for more details), whereas weather is highly dependent on the system's 43 evolution from moment to moment and can be thought of as an initial value problem (see…”

Section: Climate and Weathermentioning

confidence: 99%

“…this terminology [3,4] for more details). Weather forecasting is useful or possible for a few days, at most a week.…”

Section: Climate and Weathermentioning

confidence: 99%

Fundamentals of Climatology for Engineers

Sarker¹

2022

Preprint

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The study of long-term average weather patterns is known as climatology. It is a distinct field of study from meteorology and can be broken down into several subdivision. In order to predict the future, the knowledge of climatology is essential. In other words, with the help of climatology, we can figure out how likely it is that snow and hail will fall to the ground, and how much solar thermal radiation can reach a certain location etc. Climatology often focuses on how the climate has changed over time and how it has affected people and events. Both meteorology and climatology fall under the general term "meteorology", in particular, they are subdivision of research in the same field. In case of predicting the weather, meteorologists use variables such as humidity, air pressure, and temperature. This article's primary objective is to familiarize engineers with the fundamentals of climate and its processes so that they can effectively apply this knowledge to comprehend the climatic impact on water resources systems.

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“…Stream power can be used to investigate the influence of flow discharge changes on river morphology [28]. Stream power, the product of discharge and the river's slope, is a helpful tool for describing the river's morphological changes [29,30].…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Characterization and Analysis of River Morphology Using Long-Term Landsat Imagery and Stream Power

Arfa-Fathollahkhani

Ayyoubzadeh

Shafizadeh-Moghadam

et al. 2022

Water

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Meandering rivers are among the most dynamic Earth-surface systems, which generally appear in fertile valleys, the most valuable lands for agriculture and human settlement. Landsat time series and morphological parameters are complementary tools for exploring river dynamics. Karun River is the most effluent and largest meandering river in Iran, which keeps the Karun’s basin economy, agriculture, and industrial sections alive; hence, investigating morphological changes in this river is essential. The morphological characteristics of Karun have undergone considerable changes over time due to several tectonic, hydrological, hydraulic, and anthropogenic factors. This study has identified and analyzed morphological changes in Karun River using a time series of Landsat imagery from 1985–2015. On that basis, morphological dynamics, including the river’s active channel width, meander’s neck length, water flow length, sinuosity index, and Cornice central angle, were quantitatively investigated. Additionally, the correlation between the stream power and morphological factors was explored using the data adopted from the hydrometric stations. The results show that the dominant pattern of the Karun River, due to the sinuosity coefficient, is meandering, and the majority of the river falls in the category of developed meander rivers. Moreover, the number of arteries reduced in an anabranch pattern, and the river has been migrating towards the downstream and eastern sides since 1985. This phenomenon disposes a change in the future that can be hazardous to the croplands and demands specific considerations for catchment management.

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Essence of MIKE 21C (FDM Numerical Scheme): Application on the River Morphology of Bangladesh

Cited by 17 publications

References 5 publications

Spectral Properties of Water Hammer Wave

Spectral Properties of Water Hammer Wave

Fundamentals of Climatology for Engineers

Spatiotemporal Characterization and Analysis of River Morphology Using Long-Term Landsat Imagery and Stream Power

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