Numerical Determination of the Coefficient of Heat Transfer by Convection between Coverage and External Environment in a Small Solar Chimney

Silva, Janaína de Oliveira Castro; Silva, João Arthur Daconti; Maia, Cristiana Brasil; Machado, Daniel Sales Santos

doi:10.26678/abcm.cobem2017.cob17-0701

Procceedings of the 24th ABCM International Congress of Mechanicl Engineering 2017

DOI: 10.26678/abcm.cobem2017.cob17-0701

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Numerical Determination of the Coefficient of Heat Transfer by Convection between Coverage and External Environment in a Small Solar Chimney

Janaína de Oliveira Castro Silva¹,

João Arthur Daconti Silva²,

Cristiana Brasil Maia³

et al.

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2024

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Design and Development of Vortex Generators on Cylindrical Tower

Boonloi,

Sudsanguan,

Jedsadaratanachai

2024

Modelling and Simulation in Engineering

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This work presents a numerical study on flow configurations and pressure distribution of cylindrical towers attached with different shapes of vortex generators. The vortex‐generator attachment is done with the main aim of reducing the energy of ventilation for the cylindrical tower. The two different types of vortex generators, namely, a cylindrical‐shaped vortex generator and a diffuser‐shaped vortex generator, are compared with an original square‐shaped vortex generator. The effects of air velocity (2, 4, 6, and 8 m/s) and vortex generator size (D/2, D, and 2D) on flow structure are considered. The finite element method (a commercial code) is selected for the main problem‐solving. The numerical models of the cylindrical towers attached with various vortex generators are validated to confirm the reliability of the numerical results. From the numerical results, it was found that the suctioned updraft speed in the tower was proportional to the crosswind speed. In addition, the vortex generator with h = 2D performs the highest updraft speed, which leads to the best efficiency for ventilation.

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Design and Development of Vortex Generators on Cylindrical Tower

Boonloi,

Sudsanguan,

Jedsadaratanachai

2024

Modelling and Simulation in Engineering

View full text Add to dashboard Cite

show abstract

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Numerical Determination of the Coefficient of Heat Transfer by Convection between Coverage and External Environment in a Small Solar Chimney

Cited by 1 publication

References 0 publications

Design and Development of Vortex Generators on Cylindrical Tower

Design and Development of Vortex Generators on Cylindrical Tower

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