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TWO-WAY COUPLING OF 2D AND 3D MODELS FOR THE FORECAST OF HYDRODYNAMICS IN THE PERSIAN GULF

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Year: 2018
COI code: ICOPMAS13_131
Paper Language: English

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Authors TWO-WAY COUPLING OF 2D AND 3D MODELS FOR THE FORECAST OF HYDRODYNAMICS IN THE PERSIAN GULF

  Ehsan Sarhadizadeh - Department of Civil Engineering, K. N. Toosi University of Technology, Tehran, Iran
  Kourosh Hejazi - Department of Civil Engineering, K. N. Toosi University of Technology, Tehran, Iran
  Mohsen Soltanpour - Department of Civil Engineering, K. N. Toosi University of Technology, Tehran, Iran
  Mohammad Hossein Nemati - Department of Civil Engineering, K. N. Toosi University of Technology, Tehran, Iran

Abstract:

Over the past few decades, numerical modeling of ocean circulation with complex geometries became prevalent with rapid growth of computing power. As a result, researchers have been able to develop multiscale models for accurate and efficient simulation of oceans in large scale. 1D models are applicable for predicting scouring and sedimentation while 2D and 3D models with hydrostatic pressure assumption can be used for shallow waters where secondary flows and vertical gradients are negligible. However, in cases such as lakes, rivers with flood plains, intertidal zones and continental shelves, due to highpressure depression changes and presence of strong secondary currents, shallow water assumption cannot be applied. Accurate perdition of velocity field and the water surface in these cases requires non-hydrostatic 3D models. Generating a high quality mesh and imposing suitablesurface and bottom boundary conditions are two of the most challenging aspects of such 3D models which makes them computationally demanding. An effective way to address this issue is to couple numerical models. In the present study, numerical domain is comprised of two independent 2D and 3D unstructured triangular grids. A two-way coupling was employed by mapping the solution of one mesh onto another in overlapping regions at each time step. Therefore, performance and accuracy of each model was maintained while the total accuracy was improved due to more accurate imposition of initial and boundary conditions.

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COI code: ICOPMAS13_131

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Sarhadizadeh, Ehsan; Kourosh Hejazi; Mohsen Soltanpour & Mohammad Hossein Nemati, 2018, TWO-WAY COUPLING OF 2D AND 3D MODELS FOR THE FORECAST OF HYDRODYNAMICS IN THE PERSIAN GULF, 13th International Conference on Coasts, Ports and Marine Structures, تهران, سازمان بنادر و دريانوردي, https://www.civilica.com/Paper-ICOPMAS13-ICOPMAS13_131.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Sarhadizadeh, Ehsan; Kourosh Hejazi; Mohsen Soltanpour & Mohammad Hossein Nemati, 2018)
Second and more: (Sarhadizadeh; Hejazi; Soltanpour & Nemati, 2018)
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Type: state university
Paper No.: 9408
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