Observations on some transonic wind tunnel test results of a standard model with a T-tail

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

Download Full-text

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.

Download Full-text

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

Download Full-text

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.

Download Full-text