Publications

Displaying 1 - 25 of 111

Database-Assisted Design: Performance-Based Approach for Dynamically Sensitive Steel and Reinforced Concrete Structures

October 31, 2024

Author(s)

Daniel Rhee, DongHun Yeo, Mehedy Mashnad, Brian Carman, Charys Clay

This NIST Technical Note presents the User's Manual for the DAD_PBD version 2.0 software, a user-friendly tool for the advanced structural design of dynamically sensitive steel and reinforced concrete buildings. The software utilizes the Database-Assisted

Uncertainty quantification using Gaussian processes for topographic speed-up factors from CFD simulations

July 31, 2024

Author(s)

Yunjae Hwang, Adam L. Pintar, DongHun Yeo

Computational fluid dynamics (CFD) simulation has become increasingly popular for evaluating the topographic effects on wind fields due to its relative advantage over experimental techniques in accurately generating approach flows and capturing complex

Database-assisted-design facilitating performance-based tall building design

July 17, 2024

Author(s)

Daniel Rhee, Sophie Sisson, Brian Carman, Mehedy Mashnad, DongHun Yeo

In recent years, wind design, particularly for high-rise buildings, has seen a paradigm shift from a code-based descriptive method to a more specific performance-objective-based design. This new approach, known as the Performance-Based Wind Design (PBWD)

Database-Assisted Design: Performance-Based Approach for Dynamically Sensitive Steel Structures

July 11, 2024

Author(s)

Daniel Rhee, DongHun Yeo, Steve Pingree, Sophie Sisson, Eric Heumann, Mehedy Mashnad

This NIST Technical Note presents a User's Manual of the DAD_PBD software for mid- and high-rise steel structures. A Database-Assisted Design (DAD) method for the design of tall buildings that utilizes time-varying aerodynamic pressure data from wind

A Practical Computational Fluid Dynamics Approach for Structural Engineering: Simulation of Approach Flow with Reduced Blockage Ratios

November 2, 2023

Author(s)

Yunjae Hwang, DongHun Yeo

Computational fluid dynamics (CFD) simulations for structural wind engineering applications require a fully developed boundary layer approach flow with horizontal homogeneity and zero pressure gradient for accurate characterization of wind loading on a

Evaluation of DAD_ETABS Procedure and Software for the Design of High-Rise Steel Buildings for Wind

October 3, 2022

Author(s)

Sophie Sisson, Mehedy Mashnad, DongHun Yeo

The National Institute of Standards and Technology has developed advanced Database-Assisted Design (DAD) procedures for the design of structural members subjected to direction-dependent wind loads. Recently, a DAD_ETABS procedure that uses the ETABS

Simulations of Flow Over an Axisymmetric Hill

February 26, 2021

Author(s)

Rikhi Bose, DongHun Yeo

In this report, high-Reynolds number turbulent flow around an axisymmetric hill is studied using large eddy and unsteady Reynolds averaged Navier-Stokes simulations and the results are extensively validated against experiment. The boundary-layer thickness

Aprendiendo de los impactos del huracan Maria en Puerto Rico: Un informe de progreso

January 19, 2021

Author(s)

Joseph Main, Maria K. Dillard, Erica D. Kuligowski, Benjamin Davis, Jazalyn D. Dukes, Kenneth W. Harrison, Jennifer Helgeson, Katherine J. Johnson, Marc L. Levitan, Judith Mitrani-Reiser, Scott J. Weaver, DongHun Yeo, Luis D. Bermudez, Joel Cline, Thomas Kirsch

El 20 de septiembre de 2017, el huracán María tuvo un impacto devastador en gran parte de Puerto Rico, dañando edificios de los que dependían sus comunidades para atención médica, seguridad, comunicaciones, educación, negocios y más. Para comprender mejor

Learning from Hurricane Maria's Impacts on Puerto Rico: A Progress Report

January 19, 2021

Author(s)

On September 20, 2017, Hurricane Maria devastated much of Puerto Rico, damaging buildings that its communities relied upon for medical care, safety, communications, education, business, and more. To better understand failures in buildings and

Numerical simulation of wind-induced mean and peak pressures around a low-rise structure

August 1, 2020

Author(s)

DongHun Yeo, Robert H. Ong, Luca Patruno, Yaping He, Kenny C. Kwok

We performed Computational Fluid Dynamics (CFD) analysis of the low-rise buildings immersed in a turbulent boundary layer. The Silsoe 6 m cube was chosen as the main case study in representing the key features of the typical wind conditions experienced by

A Summary of Industrial Verification, Validation, and Uncertainty Quantification Procedures in Computational Fluid Dynamics

March 24, 2020

Author(s)

DongHun Yeo

Within a variety of CFD applications, their maturity levels can be significantly varied, depending upon e.g., modeling approach and progress of application skills. Recently, CWE (Computational Wind Engineering) has been developed with great attentions from

EQUIVALENT STATIC WIND LOADS VS. DATABASE-ASSISTED DESIGN OF TALL BUILDINGS: AN ASSESSMENT

April 1, 2019

Author(s)

Sejun Park, Emil Simiu, DongHun Yeo

Recent developments in pressure measurement technology, and unprecedented big data capabilities, have enabled the development of Database-assisted Design (DAD), a powerful innovative approach to the design of tall buildings for wind. DAD is accurate

WIND EFFECTS ON A TALL BUILDING WITH SQUARE CROSS SECTION AND MID-SIDE BASE COLUMNS: A DATABASE- ASSISTED DESIGN APPROACH

March 6, 2019

Author(s)

Sejun Park, Dat Duthinh, Emil Simiu, DongHun Yeo

This paper illustrates the application of the Database-Assisted Design (DAD) method to the wind design of high-rise buildings. The paper uses publicly available wind tunnel data and DAD procedures to compare responses to (i) corner winds and (ii) face

Recent and Current Wind Engineering Research at the National Institute of Standards and Technology

September 24, 2018

Author(s)

Dat Duthinh, Jianghua Ke, Marc L. Levitan, Long T. Phan, Adam L. Pintar, Emil Simiu, DongHun Yeo

This paper briefly reviews recent and current National Institute of Standards and Technology (NIST) research aimed at improving standard provisions and advancing structural design practice for wind loads. The research covers: (i) New wind speed maps for

Computational vs. Wind Tunnel Simulation of Atmospheric Boundary Layer Flow for Structural Engineering Applications

September 1, 2018

Author(s)

DongHun Yeo, Liang Shi

ABL simulations using LES have been performed to assess the suitability of the simulated flow for structural wind engineering applications. The governing equations of straight ABL flow for structural engineering purposes were formulated based on state-of

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