Reproduction of wind velocity history in a multiple fan wind tunnel

Cao, Shuyang; Nishi, Akira; Kikugawa, Hisao; Matsuda, Yoshiko

doi:10.1016/s0167-6105(02)00282-9

Cited by 67 publications

(29 citation statements)

References 10 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%

“…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]. According to Cao et al [70], the correlation coefficient between the target and generated velocity histories shown in Figure 3 is very high at 95.5%. Although multiple-fan actively controlled wind tunnels are powerful facilities for simulating the highly-accurate stationary ABL flow field and the highly-realistic nonstationary ABL flow field, they were not widely employed for wind-engineering research and design, since it is costly to build these wind tunnels.…”

Section: Introduction Of the Innovative Techniquementioning

confidence: 99%

“…According to Cao et al [70], one 3-D multiple-fan actively controlled wind tunnel at Miyazaki University is an open-circuit one with 99 fans of 270mm in diameter at the front (see Figure 2). The fans are arranged in a 9 wide by 11 high matrix.…”

Section: Introduction Of the Innovative Techniquementioning

confidence: 99%

“…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]. According to Cao et al [70], the correlation coefficient between the target and generated velocity histories shown in Figure 3 is very high at 95.5%.…”

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%

Section: Introduction Of the Innovative Techniquementioning

confidence: 99%

Section: Introduction Of the Innovative Techniquementioning

confidence: 99%

See 3 more Smart Citations

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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Mixed Climatology, Non-synoptic Phenomena and Downburst Wind Loading of Structures

Solari

2019

Lecture Notes in Civil Engineering

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In 1961 Davenport published a paper, considered by most the constitutive deed of Wind Engineering, where meteorology, micrometeorology, climatology, aerodynamics and structural dynamics were embedded into a homogeneous framework of the wind loading of structures. This scheme, known as the "Davenport chain" and referred to a synoptic-scale extra-tropical cyclone is so limpid and elegant as to become a sort of axiom. Between 1976 and 1978 Gomes and Vickery separated thunderstorm from non-thunderstorm winds, determined their extreme distributions and derived a mixed statistical model later extended to other phenomena; this study, a milestone in the emerging issue of mixed climatology, proved the impossibility of labelling a heterogeneous range of phenomena characterized by different velocity fields, frequencies, durations and extensions by the generic term "wind". Many of these phenomena occur in limited and well-known areas. Extra-tropical cyclones and thunderstorms affect the entire planet. This paper provides a state-of-the-art of this subject, with particular regard to the studies conducted at the University of Genova on thunderstorms.

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Advancements in Wind Science and Engineering

Solari

2019

Springer Tracts in Civil Engineering

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Reproduction of wind velocity history in a multiple fan wind tunnel

Cited by 67 publications

References 10 publications

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

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

Mixed Climatology, Non-synoptic Phenomena and Downburst Wind Loading of Structures

Advancements in Wind Science and Engineering

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