Güler, Hasan Gökhan
Arikawa, Taro
Baykal, Cüneyt
Yalçıner, Ahmet Cevdet
Performance of a rubble mound breakwater protecting Haydarpasa Port, Turkey, has been tested under tsunami attack by physical model tests conducted at Port and Airport Research Institute (Guler et al, 2015). It is aimed to understand dynamic force of the tsunami by conducting solitary wave tests (Arikawa, 2015). In this study, the main objective is to perform numerical modelling of solitary wave tests in order to verify accuracy of the CFD model IHFOAM, developed in OpenFOAM environment (Higuera et al, 2013), by comparing results of the numerical computations with the experimental results. IHFOAM is the numerical modelling tool which is based on VARANS equations with a k-ω SST turbulence model including realistic wave generation, and active wave absorption. Experiments are performed using a Froude scale of 1/30, measuring surface elevation and flow velocity at several locations in the wave channel, and wave pressure around the crown wall of the breakwater. Solitary wave tests with wave heights of H=7.5 cm and H=10 cm are selected which represent the results of the experiments. The first test (H=7.5 cm) is the case that resulted in no damage whereas the second case (H=10 cm) resulted in total damage due to the sliding of the crown wall. After comparison of the preliminary results of numerical simulations with experimental data for both cases, it is observed that solitary wave experiments could be accurately modeled using IHFOAM focusing water surface elevations, flow velocities, and wave pressures on the crown wall of the breakwater (Figure, result of sim. at t=29.6 sec). ACKNOWLEDGEMENTSThe authors acknowledge developers of IHFOAM, further extend their acknowledgements for the partial supports from the research projects MarDiM, ASTARTE, RAPSODI, and TUBITAK 213M534.


Numerical assessment of tsunami attack on a rubble mound breakwater using OpenFOAM (R)
GÜLER, HASAN GÖKHAN; Baykal, Cüneyt; Arikawa, Taro; Yalçıner, Ahmet Cevdet (2018-03-01)
A numerical assessment study of tsunami attack on the rubble mound breakwater of Haydarpasa Port, located at the southern entrance of the Istanbul Bosphorus Strait in the Sea of Marmara, Turkey, is carried out in this study using a Volume-Averaged Reynolds-Averaged Navier-Stokes solver, IHFOAM, developed in OpenFOAM (R) environment. The numerical model is calibrated with and validated against the data from solitary wave and tsunami overflow experiments representing tsunami attack. Furthermore, attack of a p...
Comparison of tsunami risk assessment based on seismic and landslide generated tsunamis for the Marmara Coast of Istanbul
Tüfekçi Enginar, Duygu; Süzen, Mehmet Lütfi; Kolat, Çağıl; Yalçıner, Ahmet Cevdet (2019-04-07)
A high resolution tsunami vulnerability and risk assessment have been performed for the Marmara coast of the megacity of Istanbul by using the MeTHuVA (METU Metropolitan Tsunami Human Vulnerability Assessment) Method (Tufekci et al., 2018) considering seismic and non-seismic (submarine landslide) tsunami sources in the sea of Marmara. The 28 September 2018, Mw7.5 strike-slip Sulawesi, Indonesia earthquake triggered an unexpected tsunami and caused damage and loss of lives in Palu Bay. The observed tsunami h...
Tsunami early warning in the eastern Mediterranean, Aegean and black sea
Ozel, Nurcan Meral; Necmioglu, Ocal; Yalçıner, Ahmet Cevdet; Kalafat, Dogan; Yilmazer, Mehmet; Comoglu, Mustafa; Sanli, Ugur; Gurbuz, Cemil; Erdik, Mustafa (2012-09-17)
A National Tsunami Warning Centre in Turkey (NTWC-TR) established at the Kandilli Observatory and Earthquake Research Institute (KOERI) under the ICG/NEAMTWS (The Intergovernmental Coordination Group for the Tsunami Warning System in the Northeastern Atlantic, the Mediterranean and connected seas region) initiative is operational since January 2012 based on MOD1 Tsunami Scenario Database and TAT (Tsunami Analysis Tool) received from EC-JRC through a collaborative agreement. NTWC-TR is also acknowledged as a...
Numerical modeling of 3 february 2002 Çay earthquake : ground motion simulation and intensity distribution
Can, Gizem; Askan Gündoğan, Ayşegül; Department of Civil Engineering (2014)
In seismically active regions strong ground motion estimation is essential for several purposes ranging from seismic design and analyses to disaster management. In regions of sparse seismic networks or seismic activity with long return periods, simulations become essential. This is particularly true when not only the peak ground motion parameters but the full time series of acceleration is required for earthquake engineering purposes. These simulations provide not only the earthquake engineering parameters ...
Marine debris in bottom trawl catches and their effects on the selectivity grids in the north eastern Mediterranean
Eryasar, Ahmet Raif; ÖZBİLGİN, HÜSEYİN; Gücü, Ali Cemal; Sakman, Serdar (2014-04-15)
In this study composition of marine debris and their blocking potential on the selectivity grid systems deployed on demersal trawls were investigated in the north eastern Mediterranean. For this, a total of 132 hauls were examined in two fishing season between 20 September 2010 and 19 February 2012. Results showed that plastic items were the most abundant debris (73% in terms of weight) and they were followed by metals (10%). Because of plastics and packing debris, it is highly probable that grids may have ...
Citation Formats
H. G. Güler, T. Arikawa, C. Baykal, and A. C. Yalçıner, “NUMERICAL MODELLING OF SOLITARY WAVE EXPERIMENTS ON RUBBLE MOUND BREAKWATERS,” presented at the American Geophysical Union, Fall Meeting 2016, 2016, Accessed: 00, 2021. [Online]. Available: