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Search Publications by: DongHun Yeo (Fed)

Displaying 76 - 100 of 111

Database-Assisted Design for Wind: Multiple Points-in-Time Approach

December 22, 2011

Author(s)

Dong Hun Yeo

One of the problems encountered in the estimation of wind effects on high-rise structures is the development of combinations of such effects as translational responses and the rotational response to wind, and/or forces and moments at various cross sections

Simplified Wind Flow and Aerodynamic Response of Residential Homes: Laboratory and Computational Fluid Dynamics Simulations

November 1, 2011

Author(s)

T.C. Fu, A.M. Aly, Arindam Chowdhury, Girma Bitsuamlak, DongHun Yeo, Emil Simiu

The reliable measurement of pressures on low-rise buildings in the atmospheric boundary layer (ABL) flow remains a challenge, as has been shown by the large discrepancies among results obtained in different wind tunnel facilities or even in the same wind

Database-Assisted Design for High-Rise Structures in Mixed Extreme Wind Climates

August 31, 2011

Author(s)

Dong Hun Yeo

The use of the DAD methodology in conjunction with multiple wind climatological databases was developed in this study to estimate peak wind effects induced by mixed extreme wind cli-mates, such as hurricanes and thunderstorms. First, we generated synthetic

Effects of Oscillating Incoming Flow on Flow-Induced Forces on a Yawed Circular Cylinder

August 31, 2011

Author(s)

Dong Hun Yeo, Nicholas P. Jones

A detached eddy simulation (DES) study was conducted on oscillating flow around a yawed circular cylinder at Re = 1.4×105 to investigate how the oscillating frequency of incoming flow affects the characteristics of flow around the cylinder and the

Sustainable Design of Reinforced Concrete Structures through Embodied Energy Optimization

June 1, 2011

Author(s)

Dong Hun Yeo, Rene Gabbai

As the world struggles to reduce energy consumption and greenhouse gas emissions, much attention is focused on making buildings operate more efficiently. However, there is another, less recognized aspect of the built environment: the embodied energy of

The Use of Aerodynamic and Wind Climatological Databases for High-Rise Reinforced Concrete Structure Design

April 26, 2011

Author(s)

Dong Hun Yeo

Structural response due to directional wind must be taken into account rigorously and transparently in wind resistant design, particularly for tall buildings. A database-assisted design (DAD) technique makes it possible to account for directional effects

DEVELOPMENT OF LARGE DIRECTIONAL WIND SPEED DATABASES

April 25, 2011

Author(s)

Dong Hun Yeo

For structures sensitive to wind directionality, methods for the estimation of wind effects require the use of time series of directional wind speeds with length exceeding the length of the MRIs of interest. This study proposes a procedure for generating

Computational Study on Aerodynamic Mitigation of Wind-Induced, Large-Amplitude Vibrations of Stay Cables With Strakes

March 1, 2011

Author(s)

Dong Hun Yeo, Nicholas P. Jones

Modifications of circular cylinder surfaces, such as strakes and helical wires, effectively mitigate Kármán vortex-induced vibrations normal to flow and have been applied to the reduction of large-amplitude vibrations of stay cables in bridges, which occur

A PROPOSED TECHNIQUE FOR DETERMINING AERODYNAMIC PRESSURES ON RESIDENTIAL HOMES

February 16, 2011

Author(s)

Tuan-Chun Fu, Aly Mousaad Aly, Arindam Chowdhury, Girma Bitsuamlak, DongHun Yeo, Emil Simiu

Wind loads on low-rise buildings in general and residential homes in particular can differ significantly depending upon the laboratory in which they were measured. The differences are due in large part to inadequate simulations of the low-frequency content

Characterization of Flow Oblique to a Circular Cylinder with Low Aspect Ratio Using 3-D Detached Eddy Simulation

January 31, 2011

Author(s)

Dong Hun Yeo, Nicholas P. Jones

Large-amplitude vibrations of stay cables in cable-stayed bridges can threaten the safety and serviceability of the structures. Understanding of the excitation mechanism is necessary to mitigate such vibrations effectively and efficiently. Experimental

Numerical Simulation of Along-Wind Loading on Small Structures Using a Simplified Wind Flow Model

November 10, 2010

Author(s)

Dong Hun Yeo

Aerodynamic measurements of wind-induced pressures on structures are required for the codifi-cation of design wind loads. However, the reliable measurement of pressures on low-rise build-ings in the atmospheric boundary layer (ABL) flow remains a challenge

Database-Assisted Design for Wind: Veering Effects on High-Rise Structures

August 15, 2010

Author(s)

Dong Hun Yeo, Emil Simiu

Atmospheric boundary layer winds experience two types of effects due to friction at the ground surface. One effect is the increase of the wind speeds with height above the surface. The second effect, called the Ekman layer effect, entails veering -- the

Database-Assisted Design for Wind: Concepts, Software, and Example for High-Rise Reinforced Concrete Structures

July 23, 2010

Author(s)

Dong Hun Yeo

Time-domain analyses of wind effects on high-rise structures have been made possible in recent years by advances in wind pressure measurement and computer technology. Time domain solutions not only provide full phase information on structural responses to