Publications

Displaying 1 - 25 of 218

Inflow Turbulence Effects on Large Eddy Simulations of the Flow around an Axisymmetric Hill

March 7, 2022

Author(s)

Rikhi Bose, Emil Simiu

Turbulent flow around an axisymmetric hill at Reynolds number Re H ∼ 1.3 × 10 5 with respect to the hill height is studied using resolved large-eddy simulations (LES). The purpose of the paper is to examine the effect of turbulence in the inflow boundary

Wind Speed Estimation Uncertainties: Effects of Climatological and Micrometeorological Parameters

October 12, 2021

Author(s)

S M. Diniz, Fahim H. Sadek, Emil Simiu

To achieve structures that are risk-consistent, structural reliability methods must be used that account for uncertainties with respect to the relevant parameters affecting the estimation of wind effects. In this paper we obtain measures of uncertainties

Wind-Tunnel Model Scale and Estimates of Wind Effects on Low-Rise Buildings

October 12, 2021

Author(s)

Michael A. Riley, Emil Simiu

Although the wind load provisions of many modern building codes are based on the results of wind tunnel testing, some effects of model scale and pressure tap quantity are still not well understood. Using test data obtained at two different scales for a low

Data-Based Models for Hurricane Evolution Prediction: A Deep Learning Approach

September 8, 2021

Author(s)

Rikhi Bose, Adam L. Pintar, Emil Simiu

Fast and accurate prediction of hurricane evolution from genesis onwards is needed to reduce loss of life and enhance community resilience. In this work, a novel model development methodology for predicting storm trajectory is proposed based on two classes

Forecasting the Evolution of North Atlantic Hurricanes: A Deep Learning Approach

June 30, 2021

Author(s)

Rikhi Bose, Adam L. Pintar, Emil Simiu

Accurate prediction of storm evolution from genesis onwards may be of great importance considering that billions of dollars worth of property damage and numerous casualties are inflicted each year all over the globe. In the present work, two classes of

Database-Assisted Design of Purlins and Girts for Wind Accounting for Directionality

January 8, 2020

Author(s)

Dat Duthinh, Emil Simiu

For the database-assisted design (DAD) of low-rise building purlins and girts, a method is proposed that explicitly accounts for wind directionality by using directional wind tunnel measurements, directional wind speed data, and publicly available software

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

Influence of wind tunnel test duration on wind load factors

August 17, 2018

Author(s)

Dat Duthinh, Adam L. Pintar, Emil Simiu

A methodology is presented for calculating the uncertainty associated with the estimation of peak pressure coefficients from wind tunnel test records of various lengths, and how this uncertainty affects design wind effects. Investigation of time series

Database-Assisted Design and Equivalent Static Wind Loads for Mid- and High-Rise Structures: Concepts, Software, and Users Manual

June 28, 2018

Author(s)

Sejun Park, Donghun Yeo, Emil Simiu

This report presents the software DAD_ESWL v1.0 capable of computing efficiently the response to wind of mid- and high-rise structures consisting of up to thousands of members. The report also documents the following features of the software: (1) Use of

Estimating peaks of stationary random processes: a peaks-over-threshold approach

December 1, 2017

Author(s)

Dat Duthinh, Adam L. Pintar, Emil Simiu

Estimating properties of the distribution of the peak of a stationary process from a single finite realization is a problem that arises in a variety of science and engineering applications. Further, it is often the case that the realization is of length T

WIND LOAD FACTORS FOR USE IN THE WIND TUNNEL PROCEDURE

December 1, 2017

Author(s)

Emil Simiu, Adam L. Pintar, Dat Duthinh, DongHun Yeo

A 2005 Skidmore Owings and Merrill report notes that the ASCE 7 Standard is incomplete insofar as it provides no guidance on wind load factors appropriate for use with the Standards wind tunnel procedure. The purpose of this paper is to contribute to such

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