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Torben Anderssen. Profile picture.

Torben Andersen

Professor emeritus

Torben Anderssen. Profile picture.

Wind on the Euro50 Enclosure

Author

  • Holger Riewaldt
  • M. Lastiwka
  • N. Quinlan
  • K. McNamara
  • Xin Wang
  • Torben Andersen
  • A. Shearer

Summary, in English

The Euro50 is a European Extremely Large Telescope. Its enclosure will be among the largest buildings of the world. Determining the maximum wind load is crucial for the survival of the structure, and local forces have an impact on the detailed design such as cladding. Pressure variations on the primary mirror and the wind load on the telescope are important for the development of active optics and segment control systems. To obtain data for the survival wind load as well as for typical observing conditions, the airflow pattern has been studied both with a wind tunnel model and computational fluid dynamics (CFD). Special attention has been given to determination of pressures on the primary mirror. Results are compared for the two methods and also with data available from previous studies and from measurements on existing telescopes. Finally, a typical wind load envelope is defined for the integrated telescope model

Department/s

  • Lund Observatory

Publishing year

2004

Language

English

Pages

537-548

Publication/Series

Proceedings of the SPIE - The International Society for Optical Engineering

Volume

5495

Issue

1

Document type

Conference paper

Publisher

SPIE

Topic

  • Astronomy, Astrophysics and Cosmology

Keywords

  • integrated telescope model
  • wind load envelope
  • computational fluid dynamics
  • wind tunnel model
  • airflow pattern
  • survival wind load
  • segment control systems
  • active optics
  • primary mirror
  • cladding
  • pressure variations
  • local forces
  • structure survival
  • maximum wind load
  • Euro50 Enclosure
  • European Extremely Large Telescope

Conference name

Astronomical Structures and Mechanisms Technology

Conference date

2004-06-21 - 2004-06-22

Conference place

Glasgow, United Kingdom

Status

Published

ISBN/ISSN/Other

  • ISSN: 1996-756X
  • ISSN: 0277-786X
  • CODEN: PSISDG