CFD-Based Wind Field Correction Method for Terrain Wind Tunnel Tests

Abstract At present, the wind tunnel test results will have certain deviation and distortion when the wind tunnel test is conducted on certain mountainous terrain with complex local terrain and large variation of wind field characteristics due to the accuracy range of the measuring instruments used in wind tunnel test. In order to correct and obtain correct wind tunnel test results, the wind tunnel tests and numerical simulations were conducted on a super-large bridge in the mountainous area of Southwest China, and the wind parameters of the wind field at the bridge site were obtained. The CFD results were compared with the wind tunnel test results to confirm the credibility of the CFD results; a method was proposed to correct the deviated wind tunnel test data based on the CFD simulation results; the deviated wind tunnel test data were corrected and predicted with the above method, and a more satisfactory correction result was obtained.

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Numerical CFD Simulation and Test Correlation in a Flight Project Environment

Volume 1: Advances in Aerospace Technology ◽

10.1115/imece2015-53052 ◽

2015 ◽

Author(s):

K. K. Gupta ◽

S. F. Lung ◽

A. H. Ibrahim

Keyword(s):

Wind Tunnel ◽

Test Data ◽

Cfd Simulation ◽

Wind Tunnel Test ◽

Flight Testing ◽

Project Environment ◽

Test Correlation

This paper presents detailed description of a novel CFD procedure and comparison of its solution results to that obtained by other available CFD codes as well as actual flight and wind tunnel test data pertaining to the GIII aircraft, currently undergoing flight testing at AFRC.

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Analysis on Wind-Induced Vibration of Tall Buildings in Hilly Terrain

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.580-583.2567 ◽

2014 ◽

Vol 580-583 ◽

pp. 2567-2571

Author(s):

Yi Sun ◽

Nuan Deng ◽

Zheng Liang Li

Keyword(s):

Wind Tunnel ◽

Wind Field ◽

Wind Tunnel Test ◽

Tall Buildings ◽

Wind Load ◽

Wind Loads ◽

Test Results ◽

Hilly Terrain ◽

Flat Terrain ◽

Wind Induced Vibration

The responses of tall buildings under wind loads in hilly terrain are remarkably different from that in flat terrain. Wind load codes can’t work efficiently or directly to calculate the wind-induced vibration of tall buildings in hilly terrain. Utilizing some wind tunnel test results of wind field in hilly terrain and pressures on tall buildings, the access to response of tall buildings on hilly terrain were provided. Some effects from hill characteristics to building responses were discussed.

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Assessing the Capability of Computational Fluid Dynamics Models in Replicating Wind Tunnel Test Results for the Rose Fitzgerald Kennedy Bridge

CivilEng ◽

10.3390/civileng2040057 ◽

2021 ◽

Vol 2 (4) ◽

pp. 1065-1090

Author(s):

Yuxiang Zhang ◽

Philip Cardiff ◽

Fergal Cahill ◽

Jennifer Keenahan

Keyword(s):

Wind Tunnel ◽

Bridge Deck ◽

Wind Tunnel Test ◽

Verification And Validation ◽

Bridge Engineering ◽

Test Results ◽

Cfd Model ◽

Cfd Simulations ◽

Wind Tunnel Tests ◽

The Rose

Despite its wide acceptance in various industries, CFD is considered a secondary option to wind tunnel tests in bridge engineering due to a lack of confidence. To increase confidence and to advance the quality of simulations in bridge aerodynamic studies, this study performed three-dimensional RANS simulations and DESs to assess the bridge deck aerodynamics of the Rose Fitzgerald Kennedy Bridge and demonstrated detailed procedures of the verification and validation of the applied CFD model. The CFD simulations were developed in OpenFOAM, the results of which are compared to prior wind tunnel test results, where general agreements were achieved though differences were also found and analyzed. The CFD model was also applied to study the effect of fascia beams and handrails on the bridge deck aerodynamics, which were neglected in most research to-date. These secondary structures were found to increase drag coefficients and reduce lift and moment coefficients by up to 32%, 94.3%, and 52.2%, respectively, which emphasized the necessity of including these structures in evaluations of the aerodynamic performance of bridges in service. Details of the verification and validation in this study illustrate that CFD simulations can determine close results compared to wind tunnel tests.

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Rancang Bangun Piranti Lunak Pengolah Data Pasca Pengujian Terowongan Angin Kecepatan Rendah Indonesia

Jurnal ULTIMATICS ◽

10.31937/ti.v7i2.360 ◽

2016 ◽

Vol 7 (2) ◽

pp. 131-138

Author(s):

Ivransa Zuhdi Pane

Keyword(s):

Wind Tunnel ◽

Wind Tunnel Test ◽

Test Results ◽

Effective Solution ◽

Post Processing ◽

Prototype Development ◽

Design Activities ◽

Index Terms ◽

Test Objects ◽

Processing Requirement

Data post-processing plays important roles in a wind tunnel test, especially in supporting the validation of the test results and further data analysis related to the design activities of the test objects. One effective solution to carry out the data post-processing in an automated productive manner, and thus eliminate the cumbersome conventional manual way, is building a software which is able to execute calculations and have abilities in presenting and analyzing the data in accordance with the post-processing requirement. Through several prototype development cycles, this work attempts to engineer and realize such software to enhance the overall wind tunnel test activities. Index Terms—software engineering, wind tunnel test, data post-processing, prototype, pseudocode

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Wind tunnel tests and dynamic analysis of wind-induced response of a transmission tower on a hill

Advances in Structural Engineering ◽

10.1177/13694332211033960 ◽

2021 ◽

pp. 136943322110339

Author(s):

Jian Guo ◽

Changliang Xiao ◽

Jiantao Li

Keyword(s):

Wind Tunnel ◽

Wind Field ◽

Dynamic Responses ◽

Interactive Effects ◽

Induced Response ◽

Transmission Tower ◽

Structural Dynamic ◽

Wind Tunnel Tests ◽

Hill Slope ◽

The Hill

A hill with a lattice transmission tower presents complex wind field characteristics. The commonly used computational fluid dynamics (CFD) simulations are difficult to analyze the wind resistance and dynamic responses of the transmission tower due to structural complexity. In this study, wind tunnel tests and numerical simulations are conducted to analyze the wind field of the hill and the dynamic responses of the transmission tower built on it. The hill models with different slopes are investigated by wind tunnel tests to measure the wind field characteristics, such as mean speed and turbulence intensity. The study shows that the existence of a transmission tower reduces the wind speed on the leeward slope significantly but has little effect on the windward slope. To study the dynamic behavior of the transmission tower, a hybrid analysis procedure is used by introducing the measured experimental wind information to the finite element tower model established using ANSYS. The effects of hill slope on the maximum displacement response of the tower are studied. The results show that the maximum value of the response is the largest when the hill slope is 25° compared to those when hill slope is 15° and 35°. The results extend the knowledge concerning wind tunnel tests on hills of different terrain and provide a comprehensive understanding of the interactive effects between the hill and existing transmission tower regarding to the wind field characteristics and structural dynamic responses.

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Investigation of the Time Dependence of Wind-Induced Aeroelastic Response on a Scale Model of a High-Rise Building

Applied Sciences ◽

10.3390/app11083315 ◽

2021 ◽

Vol 11 (8) ◽

pp. 3315

Author(s):

Fabio Rizzo

Keyword(s):

Wind Tunnel ◽

Time Dependence ◽

Wind Tunnel Test ◽

Structural Response ◽

Cumulative Distribution ◽

Scale Model ◽

Acquisition Time ◽

Test Results ◽

High Rise ◽

High Rise Building

Experimental wind tunnel test results are affected by acquisition times because extreme pressure peak statistics depend on the length of acquisition records. This is also true for dynamic tests on aeroelastic models where the structural response of the scale model is affected by aerodynamic damping and by random vortex shedding. This paper investigates the acquisition time dependence of linear transformation through singular value decomposition (SVD) and its correlation with floor accelerometric signals acquired during wind tunnel aeroelastic testing of a scale model high-rise building. Particular attention was given to the variability of eigenvectors, singular values and the correlation coefficient for two wind angles and thirteen different wind velocities. The cumulative distribution function of empirical magnitudes was fitted with numerical cumulative density function (CDF). Kolmogorov–Smirnov test results are also discussed.

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Gust Alleviation Control using Prior Gust Information: Wind Tunnel Test Results

IFAC-PapersOnLine ◽

10.1016/j.ifacol.2019.11.125 ◽

2019 ◽

Vol 52 (12) ◽

pp. 128-133

Author(s):

Yoshiro Hamada ◽

Kenichi Saitoh ◽

Noboru Kobiki

Keyword(s):

Wind Tunnel ◽

Wind Tunnel Test ◽

Test Results ◽

Gust Alleviation

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Wind Tunnel Experimental Research on Flutter Stability of Liujiaxia Bridge

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.361-363.1105 ◽

2013 ◽

Vol 361-363 ◽

pp. 1105-1109

Author(s):

Chun Sheng Shu

Keyword(s):

Wind Tunnel ◽

Critical Velocity ◽

Experimental Research ◽

Wind Tunnel Test ◽

Suspension Bridge ◽

Wind Tunnel Tests

Liujiaxia Bridge is a truss stiffening girder suspension bridge which span is 536m, and it is the narrowest suspension bridge with the same scale, so the problems of flutter stability are prominent. Results of wind tunnel test show that its critical velocity cannot meet the requirements without any aerodynamic measures. Based on above considerations, seven kinds of aerodynamic measures are proposed, respectively wind tunnel tests are conducted. The results show that the program, in which the upper central stable board is 1.12m high and the under central stable board is 1.28m high, can meet the requirements. The results of this study provide some references to solving the problem of wind-resistant stability of narrow deck suspension bridge.

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Videogrammetric Measurement for Model Displacement in Wind Tunnel Test

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.130-134.103 ◽

2011 ◽

Vol 130-134 ◽

pp. 103-107 ◽

Cited By ~ 6

Author(s):

Zheng Yu Zhang ◽

Shui Liang Wang ◽

Yan Sun

Keyword(s):

Image Processing ◽

Wind Tunnel ◽

Wind Tunnel Test ◽

Accurate Data ◽

Exterior Orientation ◽

Wind Tunnel Tests ◽

Key Techniques ◽

Transonic Wind Tunnel

It is crucial measuring position and attitude of model to gain the precise and accurate data in wind tunnel tests. The model displacement videogrammetric measurement (MDVM) system and its key techniques such as the exterior orientation with big rotation angles and large-overlap, mark points, image processing and calibration based on the known distances are therefore presented. The practice example in Asia's largest (2.4m) transonic wind tunnel has demonstrated the MDVM system and its key techniques are correct and feasible, and they have application value.

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