Finite Element Modeling for Wind Response of Aluminum Wall Cladding in Tall Building

Vincent, Okafor Chinedum; Cyril, Mbanusi Echefuna; Okolie, Kevin Chuks; Obodoh, Dominic Anosike

doi:10.25046/aj020422

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…This phenomenon is referred to as flow separation. Several factors will determine the separation point, including the roughness of the surface, degree of free stream, pressure gradients, and the Reynolds number [3]. Separation often happens along blunt or sharp edges, referred to as a "positive pressure gradient zone," because it tends to retard the flow.…”

Section: Fig 1 -The Pattern Of Vortex Sheddingmentioning

confidence: 99%

Development of A Small-Scale Vortex-Induced Wind Turbine

Samsudin¹,

Mohd²

2022

PAAT

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Over the last several years, there has been a significant and encouraging interest in the generation of power from wind. However, a massive wind turbine can only operate in a high wind speed condition. The vortex bladeless wind turbine is a completely new idea in wind turbines with a different mode of operation. It is designed to operate in low wind conditions, making it an ideal choice for areas with such conditions, such as Malaysia. This study aims to develop and evaluate a functional prototype of a vortex bladeless wind turbine that can be used to harvest wind energy in a low wind speed condition. A vortexbladeless wind turbine is fabricated based on existing research on the principle of the vortex shedding phenomenon. It is built in a cylindrical shape with an approximately 2 m height measuring from the base to the top of the mast and 0.2 m in diameter. The structure of a bladeless wind turbine is a flexible cylindrical mast over the setup that captures potential forms of energy from moving airstreams and uses a vortex induced vibration (VIV) mechanism to produce vibration in the structure. The testing wasdone by using a wind tunnel’s exhaust that produced 1 m/s to 10 m/s of air flow, which simulates a low-to-medium wind speed condition. The vibration is turned into electrical energy, using a power generating system like an electromagnetic induction mechanism. The analysis of the results is based on numerous data points gathered during the testing, including the frequency of oscillation, vortex shedding, natural frequency, and resonance parameter. Through the investigation, the results show that the phenomena of induced vibration were working at even critically low speeds, which starts at 3.3 m/s, where standard and conventional wind turbines may fail to produce the desired outcomes as they are outside of their operating windspeed. The frequency of vortex shedding increases with windspeed, from 0.94 Hz at 1 m/s to 9.39 Hz at 10 m/s. On this basis, it is confirmed that the prototype of the vortex bladeless wind turbine is working properly in harvesting wind energy, though several improvements need to be made.

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Section: Fig 1 -The Pattern Of Vortex Sheddingmentioning

confidence: 99%

Development of A Small-Scale Vortex-Induced Wind Turbine

Samsudin¹,

Mohd²

2022

PAAT

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“…This analysis is founded on the division of the bio composite by a good mesh and bringing together the sub-domains thereafter [20][21][22][23].…”

Section: Finite Elementsmentioning

confidence: 99%

Experimental and Numerical Study of the Mechanical Behavior of Bio-Loaded PVC Subjected to Aging

Lakhdar¹,

Moumen²,

Zahiri³

et al. 2020

Adv. sci. technol. eng. syst. j.

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Increased recycling of PVC has become a requirement in industrial and scientific research level. Several studies will be realized. To confirm and check the recycled materials performance, it will be important to go through numerical modeling, which consists not only in validating the results of the experiments, but also in predicting what happens when the material is loaded. PVC material is more used in different fields, that ultimately means, after service life, an increase in waste requiring a high recycling rate. This article presents an approach validating the aging model as well as a numerical analysis predicting the mechanical properties of PVC after aging. The analysis samples (rigid and flexible) PVC which are subject to two types of accelerated aging, allows to obtain an aging model. Numerical modeling of PVC after aging is carried out using the finite element method and has been able to confirm the results obtained experimentally. Predicting the mechanical properties of rigid PVC after aging loaded with coconut and cow horn fibers after a first recycling is made by the finite element method, Mori-Tanaka and Double inclusion models. The obtained results have showed an improvement in the mechanical characteristics of the PVC studied using this natural bio-loading with these two fibers which respect the environment and have a lower cost and more lightness.

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Finite Element Modeling for Wind Response of Aluminum Wall Cladding in Tall Building

Cited by 2 publications

References 2 publications

Development of A Small-Scale Vortex-Induced Wind Turbine

Development of A Small-Scale Vortex-Induced Wind Turbine

Experimental and Numerical Study of the Mechanical Behavior of Bio-Loaded PVC Subjected to Aging

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