Development of Delta Wing Aerodynamics Research in Universiti Teknologi Malaysia Low Speed Wind Tunnel

Mat, Shabudin; Ishak, Iskandar Shah; Lazim, Tholudin Mat; Mansor, Shuhaimi; Said, Mohd Farid Muhamad; Rahman, Atiqur; Kamaludim, Ahmad Shukeri Mohd; Brossay, Romain

doi:10.1155/2014/434892

Cited by 9 publications

(6 citation statements)

References 10 publications

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“…Mat et al [11] also add that at a high angle of attack, vortices undergo a sudden expansion that causes vortex breakdown. This process of vortex disintegration causes unsteadiness in the flow and a significant decrease in lift.…”

Section: Vortex Breakdownmentioning

confidence: 99%

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Analysis of Vortex on Sharp-Edged Delta Wing With Blowing Effect

Zamzuddin,

Said,

Musa

et al. 2023

JTSE

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The formation of the primary vortex above the wing is dependent on the Reynolds number, the angle of attack, the Mach number, and the bluntness of the leading edge. This experiment is done in order to assess the impacts of blowing at three sites on the delta wing's flow topology. The blower was placed on the leading edge at the 15%, 50%, and 70% wing sections. The experiment was conducted at a Reynolds number of 8 x 105, which corresponds to a wind speed of 25 m/s and a mean aerodynamic chord. The UTM generic delta wing model with a 55° sweep angle was employed, and the experiment was conducted at the Low-Speed Wind Tunnel at UniversitiTeknologi Malaysia (UTM-LST). During each experiment, the model was subjected to surface pressure monitoring techniques. This project's findings show the influence of blowing on the flow topology above the wing.In specific test settings, the installation of the blower at positions 50 percent significantly increased the size of the primary vortex while delaying its breakdown at greater angles of attack.

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Section: Vortex Breakdownmentioning

confidence: 99%

“…Vortex breakdown occurs close to the trailing edge of the wing, causing flow disruptions. Figure 4 shows the experimental vortex breakdown on sharp-edged at α=22.5° done by Mat et al [11].…”

Section: Vortex Breakdownmentioning

confidence: 99%

Analysis of Vortex on Sharp-Edged Delta Wing With Blowing Effect

Zamzuddin,

Said,

Musa

et al. 2023

JTSE

View full text Add to dashboard Cite

show abstract

“…The flow shows excellence qualities, e.g., the flow uniformity is < 0.15%, flow angularity < 0.15° and turbulence intensity < 0.04%. Since there is a heat exchanger, flow temperature can be controlled to < 0.2 ℃ [3,4]. Without doubt, this tunnel is qualified for testing in aeronautics, automotives, and wind engineering.…”

Section: Utm Low Speed Wind Tunnel (Utm-lst)mentioning

confidence: 99%

Subsonic Wind Tunnels in Malaysia: A Review

Wiriadidjaja

Hasim

Mansor

et al. 2012

AMM

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In Malaysia, there exist wind tunnels operated by several universities and organizations. Most of them are actively used for a variety of experimental works that are needed by uncounted educational curricula and aerodynamics related researches. Lately, wind tunnels have even become increasingly accepted as one of common engineering tools in solving of unexpected and abundant wind engineering problems that are continually facing automotive industries, oil and gas companies, as well as governmental agencies and ministries. This paper is meant to present an overview of the existing wind tunnels, accompanied with information on some important technical data, and added, to a lesser extent, with complementary information about backgrounds and design philosophies. The emphasis is, however, given only to those with test section size of 1.0 square meter or larger. From the general point of view, some information about testing capabilities and trends in wind tunnel technology is also presented.

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“…[10][11][12][13][14][15][16] Several studies about tunnel filtering and analysis were carried out. [17][18][19] Researchers used spatial statistics and scaling properties to deal with point cloud noises. 20 Some methods were proposed for tunnel point clouds filtering and extraction, such as mesh parameterization, Bayesian Sampling Consensus algorithm, and RANdom SAmple Consensus (RANSAC) method.…”

Section: Introductionmentioning

confidence: 99%

Time-efficient filtering method for three-dimensional point clouds data of tunnel structures

Yang

Neumann

2018

Advances in Mechanical Engineering

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With the development of subways and tunnels, health monitoring of these structures are more and more important. Terrestrial laser scanning is an essential highly accurate technology used to obtain the point clouds data. However, the enormous quantity of point cloud of a tunnel makes it difficult to monitor the long-distance tunnel effectively and efficiently. Therefore, a fast and accurate extraction method is critical for the health monitoring of tunnel structures. In this article, a ''Circular Likelihood'' method is investigated. The innovation of this study is the consideration of the symmetry and the circular shape of the tunnel structure, where most of the noise can be removed and lots of inefficient iterations are avoided; thus, the computing time is greatly shortened.

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Development of Delta Wing Aerodynamics Research in Universiti Teknologi Malaysia Low Speed Wind Tunnel

Cited by 9 publications

References 10 publications

Analysis of Vortex on Sharp-Edged Delta Wing With Blowing Effect

Analysis of Vortex on Sharp-Edged Delta Wing With Blowing Effect

Subsonic Wind Tunnels in Malaysia: A Review

Time-efficient filtering method for three-dimensional point clouds data of tunnel structures

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