scholarly journals Field Surveys and Numerical Simulation of the 2018 Typhoon Jebi: Impact of High Waves and Storm Surge in Semi-enclosed Osaka Bay, Japan

2019 ◽  
Vol 176 (10) ◽  
pp. 4139-4160 ◽  
Author(s):  
Tuan Anh Le ◽  
Hiroshi Takagi ◽  
Mohammad Heidarzadeh ◽  
Yoshihumi Takata ◽  
Atsuhei Takahashi
Keyword(s):  
Numerical Simulation ◽  
Storm Surge ◽  
Field Surveys ◽  
Osaka Bay

scholarly journals NUMERICAL SIMULATION OF STORM SURGES BY MULTI-LEVEL MODELS

1984 ◽  
Vol 1 (19) ◽  
pp. 12 ◽  
Author(s):  
Takao Yamashita ◽  
Yoshito Tsuchiya
Keyword(s):  
Numerical Simulation ◽  
Storm Surge ◽  
Water Surface ◽  
Storm Surges ◽  
Velocity Profiles ◽  
Osaka Bay ◽  
Multi Level ◽  
Induced Currents

The numerical simulation of storm surges in shallow bays is investigated by multi-level models such as the 2-level and FE-FD models which are used to consider the velocity profiles in wind-induced currents. These models were applied to hindcast the storm surge caused by Typhoon 7916 in Osaka Bay with the result that the water surface elevations and currents induced by the storm surge were successfully simulated.

scholarly journals Numerical Simulation of Storm Surge and Wave due to Typhoon Kong-Rey of 2018

2020 ◽  
Vol 32 (4) ◽  
pp. 252-261
Author(s):  
Kab Keun Kwon ◽  
Myeong Hwan Jho ◽  
Sung Bum Yoon
Keyword(s):  
Numerical Simulation ◽  
Storm Surge

scholarly journals COMPARISON OF STORM SURGE DISASTERS IN ASIA

2011 ◽  
Vol 1 (32) ◽  
pp. 18
Author(s):  
Tomoya Shibayama
Keyword(s):  
Storm Surge ◽  
River Mouth ◽  
Storm Surges ◽  
Damage Development ◽  
Field Surveys ◽  
Counter Measures ◽  
Physical Mechanisms ◽  
Cyclone Sidr ◽  
The Difference ◽  
Cyclone Nargis

Field surveys were performed in the southwest of Bangladesh after cyclone Sidr in 2007 and in Yangon River Basin after Cyclone Nargis in Myanmar in 2008 in order to learn lessons out of severe disasters due to cyclones. Spatial distributions of inundation heights were measured around the most damaged areas. Both Bangladesh and Myanmar were severely damaged, but the preparedness against storm surge and the experiences were different. The resultant total losses in these two countries were significantly different. In Bangladesh, many people witnessed that storm surges inundated with bore-like waves. Counter measured against storm surges should account for the physical mechanisms for the development of such bore-like waves and possible damages due to such waves. Embankment showed significant roles to minimize the damage. Development of riverbanks especially around the river mouth is one of most essential counter-measures to be carried out in Bangladesh. Shelter functioned well to save significant number of lives in Bangladesh. But in Myanmar, there were few experiences on storm surge and no countermeasures such as shelters. These differences results the difference of losses. They were 4,232 including deaths and unknowns in Bangladesh but 138,373 in Myanmar.

scholarly journals Numerical simulation of pounding damage to caisson under storm surge

2018 ◽  
Vol 38 ◽  
pp. 03046
Author(s):  
Chen Yu
Keyword(s):  
Numerical Simulation ◽  
Storm Surge ◽  
Failure Mode ◽  
Structural Model ◽  
Time History ◽  
Element Model ◽  
Wave Force ◽  
New Method ◽  
Wave Direction ◽  
Force Time

In this paper, a new method for the numerical simulation of structural model is proposed，which is employed to analyze the pounding response of caissons subjected to storm surge loads．According to the new method，the simulation process is divided into two steps. Firstly, the wave propagation caused by storm surge is simulated by the wave-generating tool of Flow-3D, and recording the wave force time history on the caisson. Secondly，a refined 3D finite element model of caisson is established，and the wave force load is applied on the caisson according to the measured data in the first step for further analysis of structural pounding response using the explicit solver of LSDYNA. The whole simulation of pounding response of a caisson caused by “Sha Lijia” typhoon is carried out. The results show that the different wave direction results in the different angle caisson collisions, which will lead to different failure mode of caisson, and when the angle of 60 between wave direction and front/back wall is simulated, the numerical pounding failure mode is consistent with the situation.

Study of Storm Surge Numerical Simulation in the Bohai Sea

2014 ◽  
Vol 989-994 ◽  
pp. 2288-2291 ◽  
Author(s):  
Yong Qiang Zhang ◽  
Qian Lan Leng ◽  
Ze Jian Hu ◽  
Zi Chen Zhu ◽  
Wan Jun Zhang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Spatial Distribution ◽  
Water Level ◽  
Storm Surge ◽  
Bohai Sea ◽  
Current Field ◽  
Extreme Water Level ◽  
The Bohai Sea ◽  
Astronomical Tide ◽  
Significant Difference

In this paper, a numerical model of the coupling between astronomical tide and storm surge based on hydraulic model for estuary and coast (ECOM) is confirmed to be suitable for simulation of stormsurge in the Bohai Sea. The spatial distribution of extreme water level and storm current field caused by typhoons in October 2003 are simulated.It shows that extreme water level in deep water are smaller than shallow water and the spatial distribution of extreme water level is influenced by topography.Flow filed in Bohai Sea waters takes on an fluctuation in flow field, compensatory flow and other obvious features during storm surge, compared storm surge with astronomical tide, which is a significant difference in flow filed.

scholarly journals Numerical simulation of the December 4, 2007 landslide-generated tsunami in Chehalis Lake, Canada

2015 ◽  
Vol 201 (1) ◽  
pp. 372-376 ◽  
Author(s):  
Jiajia Wang ◽  
Steven N. Ward ◽  
Lili Xiao
Keyword(s):  
Numerical Simulation ◽  
Wave Energy ◽  
Progressive Failure ◽  
Wave Direction ◽  
Field Surveys ◽  
Slide Mass ◽  
Initial Wave ◽  
Flow Speeds ◽  
Tsunami Squares ◽  
Wave Size

Abstract On December 4, 2007, a three million cubic metres landslide impacted Chehalis Lake, 80 km east of Vancouver, Canada. The failed mass rushed into the lake and parented a tsunami that ran up 38 m on the opposite shore, destroyed trees, roads and campsite facilities. Armed with field surveys and multihigh-tech observations from SONAR, LiDAR and orthophotographs, we apply the newly developed ‘Tsunami Squares’ method to simulate the Chehalis Lake landslide and its generated tsunami. The landslide simulation shows a progressive failure, flow speeds up to ∼60 m s–1, and a slide mass stoppage with uniform repose angle on the lakebed. Tsunami products suggest that landslide velocity and spatial scale influence the initial wave size, while wave energy decay and inundation heights are affected by a combination of distance to the landslide, bathymetry and shoreline orientation relative to the wave direction.

Study on the Wind-Sand Flow Movement Characteristics and the Shielding Effect of the Wind-Break Wall along the Railway in Gobi Area

2012 ◽  
Vol 178-181 ◽  
pp. 1653-1657 ◽  
Author(s):  
Jian Jun Cheng
Keyword(s):  
Numerical Simulation ◽  
Field Test ◽  
Shielding Effect ◽  
Leeward Side ◽  
Field Surveys ◽  
Movement Characteristics ◽  
Large Vortex ◽  
Sand Flow ◽  
Term Monitoring

Based on the large number of field surveys and long-term monitoring data of Hongceng, Hongliu and MengliuDong monitoring points, the wind-sand flow movement characteristics along the railway in Gobi area was analyzed. The shielding effect of the wind-break wall was evaluated by the methods of numerical simulation and field test. Conclusions drawn as followings: the wind-sand flow movement in Gobi area is characterized by stable of direction, seasonal, high-velocity,long-term,and shorting of starting-up time and moresand content. Numerical simulation shows that the wind flow form a large vortex region on the leeward side of wall, the flow field elements occurs significant changes. Both field test data and numerical simulations indicated that 3.0m height of wind-break wall meet the requirement of shielding wind-sand flow.

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