Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Advanced two- and three-dimensional tsunami models: benchmarking and validation
Download
index.pdf
Date
2017
Author
Velioğlu, Deniz
Metadata
Show full item record
Item Usage Stats
243
views
214
downloads
Cite This
Field observations provide valuable data regarding the nearshore tsunami impact, yet only in inundation areas where tsunami waves have already flooded. Therefore, tsunami modeling is essential in order to understand tsunami behavior and prepare for tsunami inundation. Analytical and numerical methods are widely applied to predict tsunami motion and inundation characteristics. On the other hand, the data obtained from field surveys and laboratory experiments are generally used for validation and performance assessment of numerical models. Nonlinear forms of two-dimensional depth-averaged shallow water equations are the most common tools that are used to estimate tsunami wave transformation and inundation. However, they may not suffice when three-dimensional flow characteristics, such as strong turbulent motion, develop in shallow water zones due to various nearshore conditions. In this respect, the performance of numerical codes that are capable of predicting tsunami motion in shallow water zones gains more importance. There are numerous numerical codes to be used for simulating tsunami motion and inundation. In this study, two numerical codes, NAMI DANCE and FLOW-3D®, are selected for validation and performance comparison. NAMI DANCE solves nonlinear forms of two-dimensional depth-averaged shallow water (2D-NSW) equations in long wave problems, specifically tsunamis. FLOW-3D® simulates linear and nonlinear propagating surface waves as well as long waves by solving three-dimensional Reynolds-averaged Navier-Stokes (3D-RANS) equations. The codes are validated vi and their performances are compared via analytical benchmarking, experimental benchmarking and field benchmarking. The results are assessed according to the accuracy and run time of the solutions. The variations between the numerical solutions of two- and three-dimensional models are evaluated through statistical error analysis. By referring to the validity range determined by these comparisons, recommendations pertinent to applying relevant models to various tsunami problems are made.
Subject Keywords
Tsunamis.
,
Tsunami damage.
,
Tsunami hazard zones.
URI
http://etd.lib.metu.edu.tr/upload/12620977/index.pdf
https://hdl.handle.net/11511/26450
Collections
Graduate School of Natural and Applied Sciences, Thesis
Suggestions
OpenMETU
Core
Assessment of inland tsunami parameters and their effects on morphology /
Pamuk, Aykut; Yalçıner, Ahmet Cevdet; Department of Civil Engineering (2014)
Recent tsunami events clearly showed the potential of massive destruction on buildings, infrastructure, coastal protection structures and also morphological changes by tsunami waves. This thesis covers investigation of tsunami motion at inundation zone considering different factors (smoothed ground without buildings, or with buildings), and related changes of inland tsunami parameters and their effects on morphology. For the applications, the simulations have been performed using different topographic condi...
Performance Comparison of NAMI DANCE and FLOW-3D((R)) Models in Tsunami Propagation, Inundation and Currents using NTHMP Benchmark Problems
Sogut, Deniz Velioglu; Yalçıner, Ahmet Cevdet (Springer Science and Business Media LLC, 2019-07-01)
Field observations provide valuable data regarding nearshore tsunami impact, yet only in inundation areas where tsunami waves have already flooded. Therefore, tsunami modeling is essential to understand tsunami behavior and prepare for tsunami inundation. It is necessary that all numerical models used in tsunami emergency planning be subject to benchmark tests for validation and verification. This study focuses on two numerical codes, NAMI DANCE and FLOW-3D((R)), for validation and performance comparison. N...
Assessment of tsunami resilience of ports by high resolution numerical modeling: a case study for Haydarpasa port in the sea of Marmara
Aytöre, Betül; Yalçıner, Ahmet Cevdet; Department of Civil Engineering (2015)
Assessment of tsunami resilience is used to determine proper mitigation strategies. Thus, it is essential to obtain modeling results in highest confidence and accuracy. Haydarpasa Port in the Sea of Marmara is selected for tsunami assessment study due to vulnerable nature of ports against marine related disasters. The region also tends to have tsunamis since it is located on the western part of the North Anatolian Fault zone where 35 tsunamis occurred in last 2000 years. The aim of this study is assessment ...
Investigation of Hydrodynamic Parameters and the Effects of Breakwaters During the 2011 Great East Japan Tsunami in Kamaishi Bay
Sozdinler, Ceren Ozer; Yalçıner, Ahmet Cevdet; Zaytsev, Andrey; Suppasri, Anawat; Imamura, Fumihiko (2015-12-01)
The March 2011 Great East Japan Tsunami was one of the most disastrous tsunami events on record, affecting the east coast of Japan to an extreme degree. Extensive currents combined with flow depths in inundation zones account for this devastating impact. Video footage taken by the eyewitnesses reveals the destructive effect and dragging capability of strong tsunami currents along the coast. This study provides a numerical modeling study in Kamaishi Bay, calculating the damage inflicted by tsunami waves on s...
Probabilistic Tsunami Hazard and Risk Analysis: A Review of Research Gaps
Behrens, Jörn; et. al. (2021-04-29)
Tsunamis are unpredictable and infrequent but potentially large impact natural disasters. To prepare, mitigate and prevent losses from tsunamis, probabilistic hazard and risk analysis methods have been developed and have proved useful. However, large gaps and uncertainties still exist and many steps in the assessment methods lack information, theoretical foundation, or commonly accepted methods. Moreover, applied methods have very different levels of maturity, from already advanced probabilistic tsunami haz...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
D. Velioğlu, “Advanced two- and three-dimensional tsunami models: benchmarking and validation,” Ph.D. - Doctoral Program, Middle East Technical University, 2017.
