scholarly journals Issues of contemporary wind engineering and aerodynamics of building structures

2016 ◽  
Vol 15 (3) ◽  
pp. 029-051 ◽  
Author(s):  
Tomasz Lipecki ◽  
Paulina Jamińska
Keyword(s):  
Wind Tunnel ◽  
Numerical Simulations ◽  
In Situ Measurements ◽  
Wind Engineering ◽  
Wind Loads ◽  
Building Structures ◽  
Wind Tunnel Tests

The paper reviews nowadays problems and issues of wind engineering and aerodynamics of building structures. The article mainly focuses on aerodynamics of building structures, shortly characterizing theoretical bases, which one must take into account when assuming wind loads. The three different approaches of collecting information in the field of wind loads are described: in-situ measurements, wind tunnel tests and numerical simulations. Also, a review of the most important contemporary issues of wind engineering is presented.

Interference Effects on High-Rise Buildings – Overview of the Recent Research

2014 ◽  
Vol 1057 ◽  
pp. 105-112
Author(s):  
Michal Franek ◽  
Juraj Žilinský
Keyword(s):  
Wind Tunnel ◽  
Wind Loads ◽  
Building Structures ◽  
Interference Effects ◽  
Wind Tunnel Tests ◽  
High Rise ◽  
Real Objects ◽  
Exposure Measurements

Wind loads on buildings are evaluated by using codes and standards. They are based on wind tunnel tests, which are performed on an isolated model in open exposure. Measurements by several researchers have shown that wind loads on real objects are considerably different than those on an isolated building. Structures around building decrease or increase the forces on building. This effect is termed interference. Interference includes geometry, layout and orientation of surrounding objects. Further aspects are direction of the wind and terrain conditions. For this reason it is necessary to evaluate interference before planning. The aim of the article is to overview the recent research, comparison between an isolated building and a group of buildings, to name the interference parameters and explain how they modify the forces on building. Also attempt to provide general recommendations for elementary models because this problem has large number of variations, especially for complicated models where it is necessary to evaluate the specific type of building. These recommendations should be used by designers and planners of the buildings.

Study of Equivalent Static Wind Loads on a High-Rise Building with 204 Meters High

2011 ◽  
Vol 243-249 ◽  
pp. 985-988
Author(s):  
Qin Hua Wang ◽  
Bi Qing Shi ◽  
Ping Sheng Xu
Keyword(s):  
Wind Tunnel ◽  
Structure Design ◽  
Wind Engineering ◽  
Wind Loads ◽  
Building Structures ◽  
High Rise ◽  
High Rise Building ◽  
Load Response ◽  
Equivalent Static Wind Loads

Equivalent static wind loads (ESWL) are the bridge between engineer in the structure design field and researcher in wind engineering field. In this paper, a practical high-rise building with 204 meters high was tested in wind tunnel, and then ESWL was calculated by load-response correlation (LRC) method based on the results of wind tunnel. Some results are useful for design of building structures.

Wind tunnel tests for mean wind loads on partially clad structures

2010 ◽  
Vol 98 (12) ◽  
pp. 689-700 ◽  
Author(s):  
Samuel Amoroso ◽  
Kirby Hebert ◽  
Marc Levitan
Keyword(s):  
Wind Tunnel ◽  
Wind Loads ◽  
Wind Tunnel Tests

Predicting Wind Loads on the Topside of a Self-Propelled Wind Turbine Installation Jack-Up Using CFD

2021 ◽  
Author(s):  
Zana Sulaiman
Keyword(s):  
Boundary Layer ◽  
Wind Tunnel ◽  
Wind Turbine ◽  
Full Range ◽  
Design Tool ◽  
Wind Loads ◽  
Computational Domain ◽  
Wind Tunnel Tests ◽  
Jack Up ◽  
Turbine Installation

Abstract This paper presents the results of wind load computational fluid dynamics (CFD) calculations performed on the topside structures of a self-propelled wind turbine installation jack-up. The CFD calculations were performed for the jack-up topside structures with and without the deck load. An atmospheric boundary layer profile was applied for the model-scale calculations. The full range of heading angles was considered. The CFD results were validated through comparison with the wind tunnel tests which were carried out at the German-Dutch wind tunnels (DNW) in Marknesse, The Netherlands. Moreover, a comparison is presented between the applied boundary layer profiles throughout the CFD computational domain with those profiles measured in the wind tunnel. The CFD results were found to be in good agreement with the wind tunnel tests for the considered cases, verifying the feasibility of the CFD method as an important design tool for the prediction of wind loads during the design processes of these types of jack-ups.

An investigation of snow drifting on flat roofs: Wind tunnel tests and numerical simulations

2019 ◽  
Vol 162 ◽  
pp. 74-87 ◽  
Author(s):  
Zhixiang Liu ◽  
Zhixiang Yu ◽  
Fu Zhu ◽  
XiaoXiao Chen ◽  
Yi Zhou
Keyword(s):  
Wind Tunnel ◽  
Numerical Simulations ◽  
Wind Tunnel Tests ◽  
Snow Drifting ◽  
Flat Roofs

Spectral Characteristics and Correlation of Dynamic Wind Loads of a Typical Super-Tall Building

2013 ◽  
Vol 351-352 ◽  
pp. 347-350
Author(s):  
Lun Hai Zhi
Keyword(s):  
Wind Tunnel ◽  
Empirical Formula ◽  
Spectral Characteristics ◽  
Tall Buildings ◽  
Tall Building ◽  
Wind Loads ◽  
Wind Loading ◽  
Wind Tunnel Tests ◽  
Cross Correlations ◽  
Overturning Moment

This paper present some selected results of wind tunnel tests carried out on a typical super-tall building The variations of wind loads in the three orthogonal directions with wind attack direction were evaluated. The cross-correlations among various wind loading components were presented and discussed in detail. Furthermore, the across-wind spectral characteristics were studied and an empirical formula for estimation of the across-wind overturning moment spectrum for the super-tall building is presented. The output of this study is expected to be of considerable interest and practical use to professionals and researchers involved in the design of super-tall buildings.

Wind flow and wind loads on the surface of a towershaped building: Numerical simulations and wind tunnel experiment

2008 ◽  
Vol 51 (1) ◽  
pp. 103-113
Author(s):  
YuJun Jiang ◽  
HuiZhi Liu ◽  
BoYin Zhang ◽  
FengRong Zhu ◽  
Bin Liang ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
Numerical Simulations ◽  
Wind Tunnel Experiment ◽  
Wind Loads ◽  
Wind Flow

Wind Loads on a Passenger/Car Ferry by CFD Computations and Wind Tunnel Tests

2011 ◽  
Vol 58 (2) ◽  
pp. 82-88 ◽  
Author(s):  
Werner Blendermann ◽  
Katrin Hellwig ◽  
Eberhard Schuckert
Keyword(s):  
Wind Tunnel ◽  
Wind Loads ◽  
Passenger Car ◽  
Wind Tunnel Tests

scholarly journals Diagnosis of the Forcing and Structure of the Coastal Jet near Cape Mendocino Using In Situ Observations and Numerical Simulations

2007 ◽  
Vol 46 (9) ◽  
pp. 1455-1468 ◽  
Author(s):  
David A. Rahn ◽  
Thomas R. Parish
Keyword(s):  
Numerical Simulations ◽  
Mesoscale Model ◽  
The United States ◽  
In Situ Measurements ◽  
Gradient Force ◽  
Pressure Gradient Force ◽  
Isobaric Surface ◽  
Radar Altimeter ◽  
East West

Abstract Several flights were conducted by the University of Wyoming King Air near Cape Mendocino, California, during June 2004 to examine finescale features of the coastal low-level jet (CJ) that frequently forms during summer over the ocean off the West Coast of the United States. The primary goal of these flights was to measure the horizontal pressure gradient force (PGF) and hence to determine the forcing of the CJ directly. By flying a series of redundant legs on an isobaric surface, heights of the pressure surface can be obtained from radar altimeter measurements and refined position estimates from an onboard global positioning system receiver. The slope of the isobaric surface height is proportional to the PGF. Results are shown for the 22 June 2004 case study conducted to the south of Cape Mendocino. The forcing of a CJ under weak synoptic forcing and the role of the elevated terrain near Cape Mendocino are explored. Ten isobaric legs approximately 70 km in length and directed east–west were conducted near the level of the maximum CJ wind speed. The vertical structure of the CJ was obtained from sawtooth legs conducted along an east–west flight leg. Numerical simulations have been performed for this case using the fifth-generation Pennsylvania State University–National Center for Atmospheric Research Mesoscale Model (MM5) for comparison with in situ measurements. Model simulations show pressure perturbations in the vicinity of the cape as the northerly winds associated with the CJ interact with the coastal topography. Close agreement is found between in situ measurements and MM5 analyses of the various state parameters and the PGF along the east–west flight track in the lee of Cape Mendocino. Strong variation in the PGF is observed along the flight path. Large ageostrophic accelerations are present in response to the adjustment of the CJ with Cape Mendocino, reflecting the force imbalance between the observed PGF and Coriolis force.

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