Liu Yan, Qian Hongliang, Fan Feng. Wind load characteristics of large radio telescope[J]. Infrared and Laser Engineering, 2015, 44(1): 148-156.
| Citation:
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Liu Yan, Qian Hongliang, Fan Feng. Wind load characteristics of large radio telescope[J]. Infrared and Laser Engineering, 2015, 44(1): 148-156.
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Wind load characteristics of large radio telescope
- 1.
School of Civil Engineering,Chang'an University,Xi'an 710061,China;
- 2.
School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China
- Received Date: 2014-05-13
- Rev Recd Date:
2014-06-09
- Publish Date:
2015-01-25
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Abstract
Fully-steerable radio telescope rotates in two directions during its operation which results in different kinds of upwind postures and complex wind load distributions on its reflector. In order to get the wind load distribution and obtain the corresponding wind load of the reflector structure, the 110 m (F/D=0.3) telescope was chose to be built in Xinjiang. First, the computational fluid dynamics software FLUENT was used for its average surface pressure distribution simulation and the corresponding wind tunnel tests were conducted to verify the validity of CFD simulations on the average surface pressure distribution of the reflector. By comparing the numerical simulation and experimental results, the surface wind load characteristics of the rotating parabolic reflector were revealed. Subsequently, the wind load characteristics were analyzed numerically for the change of its directions for several typical radio telescope structures and the results were given for different apertures, different focal ratios. The results provide valuable reference for similar structure in its wind resistant design.
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References
|
[1]
|
Gao Yanlong. Study on wind characteristics simulation method of antennae[D]. Xi'an: University of Electronic Science and Technology of China, 2009. (in Chinese) |
|
[2]
|
|
|
[3]
|
|
|
[4]
|
De Young, Vogiatzis K. Numerical simulations of airflow in verylarge telescope enclosures [C]//SPIE, Second Backaskog Workshop on Extremely Large Telescopes,2004, 5382: 379-387. |
|
[5]
|
|
|
[6]
|
Y Chen, G A Kopp, D Surry. Prediction of pressure coefficients on roofs of low buildings using artificial neural networks[J]. Wind Eng Ind Aerodyn, 2003, 91: 423-441. |
|
[7]
|
GB50009-2001. Load code for the design of building structures[S].Beijing:ChinaArchitectureBuildingPress, 2006. (inChinese) |
|
[8]
|
|
|
[9]
|
Zhang Xiangting. Handbook of Computational Wind Engineering Design[M]. Beijing: Chinese Architectural Press, 1998.(in Chinese) |
|
[10]
|
|
|
[11]
|
|
|
[12]
|
GB50011-2010. Code for seismic design of buildings [S]. Beijing: China Architecture Building Press, 2010. (in Chinese) |
|
[13]
|
|
|
[14]
|
Qian Hongliang, Liu Yan, Fan Feng. Surface precision analysis on main reflector of 65 m antenna structure [J]. Infrared and Laser Engineering, 2012, 41(11): 3027-3033. (in Chinese) |
|
[15]
|
Bremer M, Penalver J. FE model based interpretation of telescope temperature variations[C]//SPIE, 2002, 4757: 186. |
|
[16]
|
|
|
[17]
|
|
|
[18]
|
Bremer M, Greve A, van't Klooster K, et al. Front and rear Perspective heated prototype panels for the IRAM 15 m telescopes[C]//28th ESA Antenna Workshop on Space Antenna Systems and Technologies, ESTEC, 2005: 943. |
|
[19]
|
|
|
[20]
|
Chamberlin R A. Temperature meaurements on the Leighton telescope[J]. Surface Memo, 2003, 5: 124-130. |
|
[21]
|
Cheng J. Principles of Astronomical Telescope Design [M]. New York: Springer, Heidelberg, 2009. |
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