scholarly journals Numerical Simulation of Storm Surges and Waves Caused by Typhoon Jebi in Osaka Bay with Consideration of Sudden Change of Wind Field

2020 ◽  
Vol 40 (2) ◽  
pp. 44-68
Author(s):  
Kazuhiro TANAKA ◽  
Masaki WASHIDA ◽  
Yoshihiro NISHIUKE ◽  
Tetsuya HIRAISHI
Keyword(s):  
Numerical Simulation ◽  
Wind Field ◽  
Sudden Change ◽  
Storm Surges ◽  
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 CYCLONIC STORM SURGES OVER THE BAY OF BENGAL USING A METEOROLOGY-WAVE-SURGE-TIDE COUPLED MODEL

2014 ◽  
Vol 1 (34) ◽  
pp. 26
Author(s):  
Khandker Masuma Tasnim ◽  
Ohira Koichiro ◽  
Tomoya Shibayama ◽  
Miguel Esteban ◽  
Ryota Nakamura
Keyword(s):  
Numerical Simulation ◽  
Bay Of Bengal ◽  
Coupled Model ◽  
Storm Surges ◽  
Cyclonic Storm

Simulation Method for 3-D Wind Field over Complex Terrain with Asymmetrical Mountains

2013 ◽  
Vol 444-445 ◽  
pp. 549-554
Author(s):  
Huan Ran Hu ◽  
Guan Xin Hong
Keyword(s):  
Fluid Dynamics ◽  
Numerical Simulation ◽  
Turbulence Intensity ◽  
Potential Flow ◽  
Wind Field ◽  
Complex Terrain ◽  
Simulation Method ◽  
Engineering Practice ◽  
Characteristics Analysis ◽  
Flow Theories

It is important for the research of flight characteristics to master the distribution of wind field and the character of turbulence intensity in a complex-terrain mountain. Based on the potential flow theories in fluid dynamics, a numerical simulation method of complex terrain including asymmetrical and symmetrical mountains has been developed in this paper. In particular, asymmetrical mountains are simulated by the combination of two transformed quarter-semiellipsoids. Furthermore, mountain-induced airflow is calculated based on potential flow theory, which could reflect the characteristic of wind field. As an example, the wind field near Dingling airport in Beijing has been simulated and analyzed by this method. The results demonstrate that this method is suitable and accurate for engineering practice, and also applicable for flight dynamics characteristics analysis of aircrafts.

Transient Simulation of a Three-Dimensional Moving Downburst

2012 ◽  
Vol 446-449 ◽  
pp. 3875-3878
Author(s):  
Bai Feng Ji ◽  
Wei Lian Qu
Keyword(s):  
Fluid Dynamics ◽  
Numerical Simulation ◽  
Computational Fluid Dynamics ◽  
Wind Field ◽  
Three Dimensional ◽  
Simulation Method ◽  
Transient Simulation ◽  
Dynamics Simulation ◽  
Transmission Tower ◽  
Transient Wind

Thunderstorm microbursts, which are sources of extreme wind loadings in nature, have caused numerous structural failures, especially collapses of transmission tower around the world. Numerical simulation using computational fluid dynamics (CFD) has recently made significant progress in simulating downbursts. In this paper, transient simulation of a three-dimensional moving downburst was studied using computational fluid dynamics simulation method. Transient simulation of a three-dimensional moving downburst was conducted using time-filtered Reynolds Averaged Navier-Stokes (RANS) numerical simulation method. The three-dimensional transient wind field characteristics in a moving downburst were studied in detail. The results indicate that transient wind field characteristics in a moving downburst present quite different characteristics compared with stationary downburst at different heights and radial positions.

Numerical simulation of storm surges in Lake Winnipeg

2011 ◽  
Vol 60 (2) ◽  
pp. 181-197 ◽  
Author(s):  
Padala Chittibabu ◽  
Yerubandi R. Rao
Keyword(s):  
Numerical Simulation ◽  
Storm Surges ◽  
Lake Winnipeg

The Study of Building Indoor and Outdoor Wind Environment

2012 ◽  
Vol 482-484 ◽  
pp. 2592-2595 ◽  
Author(s):  
Zhong Hua Tang ◽  
Ri Chao Liu ◽  
De Bao Lei
Keyword(s):  
Numerical Simulation ◽  
Wind Field ◽  
Indoor Environment ◽  
Natural Ventilation ◽  
High Quality ◽  
Wind Environment ◽  
Building Height ◽  
Building Layout ◽  
Indoor And Outdoor

Through FLUENT numerical simulation, this paper is aimed on studying the influence of outdoor wind environment on indoor environment. We found that building height, building layout format and opening format in the wall are significant impacted on indoor natural ventilation. At the three-fourth height of building, if the building layout and housing opening is stagger, it can get high-quality indoor natural ventilation and more evenly indoor wind field.

Study on the Downburst Field Characteristics under the Influence of Two-Dimensional Continuous Mountains at Different Distance

2014 ◽  
Vol 580-583 ◽  
pp. 3111-3114
Author(s):  
Yi Sun ◽  
Yuan Ze Wu ◽  
Hai Tao Shi ◽  
Bai Feng Ji
Keyword(s):  
Numerical Simulation ◽  
Boundary Layer ◽  
Wind Field ◽  
Strong Wind ◽  
Two Dimensional ◽  
Field Characteristic ◽  
Main Factors ◽  
Cfd Numerical Simulation ◽  
The Impact

Downburst is an outburst strong wind on or near the ground, and its wind field characteristics are significantly different from boundary layer winds. Continuous mountains at different distance are one of the main factors for the influence of downburst wind field characteristic. In this thesis, the changes of the wind field characteristics under the influence of continuous mountains at different distance after the downburst happened are studied by CFD numerical simulation. The impact of downburst is analysed and summarized through the charts.

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