Experimental Determination of Aerodynamic Coefficients on a Panel of Wire Mesh/Perforated Sheet for Dish Antennas
IR@SERC: CSIR-Structural Engineering Research Centre, Chennai
View Archive Info| Field | Value | |
| Title |
Experimental Determination of Aerodynamic Coefficients on a Panel of Wire Mesh/Perforated Sheet for Dish Antennas
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| Creator |
Lakshmanan, N.
Arunachalam, S. Selvi Rajan, S. Harikrishna, P. Ramesh Babu, G. |
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| Subject |
Aerodynamic
Panel of wire Mesh/Perforated sheet Antennas |
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| Description |
Wind load estimation on large parabolic dish antennas with several panels of wire
meshes/perforated sheets is generally complex owing to its curved shape with respect to
various angles of wind incidence and porosity. In this study detailed experimental
investigations were conducted for evaluating the mean drag and lift coefficients of (i) wire
mesh 6 mm x 6 mm x 0.5 mm and (ii) perforated sheet. The solidity ratio of the wire mesh was
about 17% and that of the perforated sheet was about 68%. A maximum value of 1.025 was
obtained for the mean drag coefficient for the case of wire mesh, when the flow was normal to
the panel ( θ = 0° and β = 90° ). The maximum lift coefficient was equal to 0.375,
corresponding to ( θ = 0° and β = 90° ). Similarly for the case of perforated sheet,
corresponding mean drag and lift coefficient values are 1.65 and 1.095 respectively.
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| Date |
2009
2009 2008 |
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| Type |
Conference paper
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| Identifier |
Proceedings of the Sixth Structural Engineering Convention (SEC 2008), 18-20 December, Chennai, India, 2008, p.1443-1451. Jointly Organised by Structural Engineering Research Centre, Indian Institute of Technology, Anna university, Chennai.
http://14.139.176.62:8080/jspui/handle/123456789/276 |
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| Language |
en
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