A Baroclinic Three Dimensional Numerical Model Applied to Coastal Lagoons

Balas, Lale; Özhan, Erdal

doi:10.1007/3-540-44862-4_23

Cited by 7 publications

(7 citation statements)

References 4 publications

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“…The authors presented results from a series of test cases to assess the accuracy and efficiency of the model. The 3-D numerical model of HYDROTAM-3D was used to study the circulations in coastal waters [15]. They applied their model to simulate the coastal circulation in ˙Izmit Bay (Marmara Sea), Turkey, and discussed the circulation patterns and their impacts on the water quality in the region [16].…”

Section: The New Hybrid Bayesian Risk Modelmentioning

confidence: 99%

An Integrated Bayesian Risk Model for Coastal Flow Slides Using 3-D Hydrodynamic Transport and Monte Carlo Simulation

Durap

Balas

Çokgör

et al. 2023

JMSE

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The literature suggests two forms of flow slides: breaching and liquefaction. Both forms of failure have comparable ultimate circumstances, but the progression and sand movement mechanisms of breaching failure diverge from those of liquefaction. The first type, breaching, occurs in densely packed sand and is characterized by slow sand grain discharge throughout the dilation of the failing soil particles and negative excess pore pressures. The latter form, known as liquefaction, is the process by which a mass of soil abruptly begins to behave like a flowing liquid, and as a result, it can flow out across overly mild slopes. The process begins in compacted sand and is linked to positive surplus pore water pressures that are caused by the compaction of the sand. Despite the available literature on flow slide failures, our understanding of the mechanisms involved remains limited. Since flow slides often begin below the water surface, they can go undetected until the collapse reaches the bank above ground. The complexity of flow slides requires the use of cutting-edge technological instruments, diving equipment, advanced risk assessment, and a variety of noteworthy probabilistic and sensitivity analyses. Hence, we developed a new sensitivity index to identify the risk of breach failure and vulnerable coastal areas to this risk. In addition, we developed a sophisticated hybrid model that allows for all possibilities of flow slides in sync with random variables used in this new sensitivity index. In this new hybrid model, three distinctive models exist. The 3D Hydrodynamic Model addresses waves, wind, current, climate change, and sediment transport. The Monte Carlo Simulation is responsible for sensitivity analysis, and the Bayesian Network focuses on joint probabilities of coastal flow slide parameters of this new index that incorporates all environmental parameters, including climate change. With the assistance of these three models, researchers aim to: (a) expand the application scope by presenting a method on coastal flow slides; (b) consider different particle diameters corresponding to critical angle slope failure; (c) analyze variables that can play a pivotal role in the flow slides; and (d) present a methodology for coupling coastal flow slide projections with reliable outcomes. The hybrid model incorporates random variables of retrogressive breach failures, and the new risk index considers their ranges to control the simulation. The use of such a hybrid model and risk index offers a robust and computationally efficient approach to evaluating coastal flow slides.

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Section: The New Hybrid Bayesian Risk Modelmentioning

confidence: 99%

An Integrated Bayesian Risk Model for Coastal Flow Slides Using 3-D Hydrodynamic Transport and Monte Carlo Simulation

Durap

Balas

Çokgör

et al. 2023

JMSE

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“…Bu tip akıntılar derinlik boyunca ve alansal olarak yön değiştirirler, bu nedenle iki ve tek boyutlu modellerle benzeştirilmeleri önemli hatalar doğurur. HYDROTAM-3D Modeli, rüzgar iklimi, dalga iklimi, hidrodinamik, türbülans, dalga ilerlemesi ve kıyı boyu sediman taşınım alt modellerinden oluşmaktadır [16][17][18][19][20]. Model veri tabanında Türkiye Kıyıları Meteoroloji İstasyonları'nın kuruluşlarından bu yana (yaklaşık 40 yıllık) saatlik rüzgar verileri yer almakta ve rüzgar iklimi alt modelinde bu veriler kullanılmaktadır.…”

Section: üç Boyutlu Hi̇drodi̇nami̇k Taşinim Modeli̇: Hydrotam-3d (3d Hydrodynamic Transport Model: Hydrotam-3d)unclassified

“…Bu bağlamda model Türkiye kıyılarına özgün bir model olarak tanımlanabilir. [16][17][18][19][20][21][22][23][24][25][26].…”

Section: Gi̇ri̇ş (Introduction)unclassified

Alara, Türkiye denizel alanında sediman taşınımının modellenmesi

Genç¹

2016

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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“…Developed model is capable of computing water levels and water particle velocity distributions in three principal directions by solving the Navier-Stokes equations. The governing hydrodynamic equations in the three dimensional cartesian coordinate system with the z-axis vertically upwards, are [5], [6], [7], [8]:…”

Section: Theorymentioning

confidence: 99%

A Composite Finite Element-Finite Difference Model Applied to Turbulence Modelling

Balas

Inan

2007

Computational Science – ICCS 2007

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Abstract. Turbulence has been modeled by a two equation k-ω turbulence model to investigate the wind induced circulation patterns in coastal waters. Predictions of the model have been compared by the predictions of two equation k-ε turbulence model. Kinetic energy of turbulence is k, dissipation rate of turbulence is ε, and frequency of turbulence is ω. In the three dimensional modeling of turbulence by k-ε model and by k-ω model, a composite finite element-finite difference method has been used. The governing equations are solved by the Galerkin Weighted Residual Method in the vertical plane and by finite difference approximations in the horizontal plane. The water depths in coastal waters are divided into the same number of layers following the bottom topography. Therefore, the vertical layer thickness is proportional to the local water depth. It has been seen that two equation k-ω turbulence model leads to better predictions compared to k-ε model in the prediction of wind induced circulation in coastal waters.

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A Baroclinic Three Dimensional Numerical Model Applied to Coastal Lagoons

Cited by 7 publications

References 4 publications

An Integrated Bayesian Risk Model for Coastal Flow Slides Using 3-D Hydrodynamic Transport and Monte Carlo Simulation

An Integrated Bayesian Risk Model for Coastal Flow Slides Using 3-D Hydrodynamic Transport and Monte Carlo Simulation

Alara, Türkiye denizel alanında sediman taşınımının modellenmesi

A Composite Finite Element-Finite Difference Model Applied to Turbulence Modelling

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