Active control of turbulence for an atmospheric boundary layer model in a wind tunnel

Nishi, Akira; Kikugawa, Hisao; Matsuda, Yoshiko; Tashiro, D.

doi:10.1016/s0167-6105(99)00089-6

Cited by 32 publications

(14 citation statements)

References 7 publications

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“…To this end, an effective research scheme for future full-scale/model test comparison studies is formulated based on the multiple-fan actively controlled wind tunnel simulation technique [65][66][67][68][69][70]. Following the below procedures, the new research scheme can reasonably separate the mingled adverse effects:…”

Section: Limitations Of the Performed Comparison Studies And A New Rementioning

confidence: 99%

“…As can be seen, the new research scheme largely relies on the multiple-fan actively controlled wind tunnel simulation technique. The capability of multiple-fan actively controlled wind tunnels in accurately simulating stationary and nonstationary ABL flow fields has been recognized by Nishi et al [65][66][67], Nishi and Miyagi [68] and Cao et al [69,70]. …”

Section: Limitations Of the Performed Comparison Studies And A New Rementioning

confidence: 99%

“…Using power spectrum modification method (see Subsec. 4.3.2. for details) or time-lag modification method [66], highly accurate stationary ABL flow fields were simulated in multiple-fan wind tunnels, whose profiles of turbulence parameters and Re stress were identical with the targets [65][66][67][68][69]. Besides, by repeated modification of both power spectrum and phase of the input data to the fans, simulation of velocity histories with sharp velocity changes was also achieved by Cao et al [70].…”

Section: Introduction Of the Innovative Techniquementioning

confidence: 99%

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Full-Scale/Model Test Comparisons to Validate the Traditional ABL Wind Tunnel Simulation Technique: A Literature Review

Dong¹,

Peng²,

Zhao³

et al. 2017

Preprint

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Abstract:Full-scale/model test comparison studies to validate the traditional atmospheric boundary layer (ABL) wind tunnel simulation technique are reviewed. According to the literature review, notable discrepancies between full-scale measurement results and model test results were observed by most performed comparison studies, but the causes of the observed discrepancies were not revealed in a scientific way by those studies. In this regard, a new research scheme for future full-scale/model test comparison studies is proposed in this article, which utilizes the multiple-fan actively controlled wind tunnel simulation technique. With the new research scheme, future full-scale/model test comparison studies are expected to reasonably disclose the main problems with the traditional ABL wind tunnel simulation technique, and the technique can be improved correspondingly.Keywords: comparison study; full-scale measurement; wind tunnel model test; multiple-fan actively controlled wind tunnel; research scheme IntroductionAs a mature technique applied in aviation industry, the wind tunnel model test was introduced into the field of wind-engineering research and design in 1960s. After Jensen [1] proposed that the flow field simulated in the wind tunnel should be similar to the actual atmospheric boundary layer (ABL) flow field for wind-engineering model tests, simulating ABL has become an indispensable test procedure. To fulfill the task of simulating realistic ABL turbulent flow fields in the wind tunnel, passive simulation devices, including spires, roughness elements, grids and barriers, can jointly be used. It has been found that the target flow fields can be obtained by adjusting the position and the number of some devices placed in the beginning of the wind tunnel [2,3]. During the past 50 years, most scientific researches and engineering practices made by the wind-engineering community utilized the traditional ABL wind tunnel simulation technique. With this technique, theoretical achievements were made, and numerous engineering structures' safety against extreme wind events was ensured.

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Section: Limitations Of the Performed Comparison Studies And A New Rementioning

confidence: 99%

Section: Limitations Of the Performed Comparison Studies And A New Rementioning

confidence: 99%

Section: Introduction Of the Innovative Techniquementioning

confidence: 99%

See 1 more Smart Citation

Full-Scale/Model Test Comparisons to Validate the Traditional ABL Wind Tunnel Simulation Technique: A Literature Review

Dong¹,

Peng²,

Zhao³

et al. 2017

Preprint

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show abstract

“…[57,47,39,64,69,13]). Observations of such structures have been obtained in wind tunnel facilities [6,32,43,20]. Previous studies of vortex organization in the turbulent boundary layer with Particle Image Velocimetry (PIV), have shown that hairpin vortex signatures populate the boundary layer abundantly [1], and the conceptual representation they give seems to be the best match to the phenomena observed with the lidar.…”

Section: Horizontal Observationsmentioning

confidence: 99%

A Raman lidar to measure water vapor in the atmospheric boundary layer

Froidevaux

Higgins

Simeonov

et al. 2013

Advances in Water Resources

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“…Two-dimensional and three-dimensional actively controlled wind tunnels with multiple fans have been developed in Miyazaki University, mainly for the purpose of reproducing the atmospheric boundary layer. In the past several years, the spatial distributions of some turbulent parameters, such as mean velocity, turbulent intensity, integral scale, power spectrum and Reynolds stress, etc., have been successfully reproduced in the two-dimensional wind tunnel 5), 6), 7), 8) In this study, the simulation of wind velocity history is carried out in the 3-dimensional wind tunnel. Two instances of the wind velocity history are assumed as the targets to be reproduced, which are the case of fully developed turbulent flow and the case of intermittent turbulent flow.…”

mentioning

confidence: 99%