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					    NIO Workshop on Wind Modeling

           Welcome and Introduction

                    Larry Stepp



11/26/01       NIO Workshop on Wind Modeling   LMS
                            Agenda

November 26 - morning
9:00       Welcome and introduction               Larry Stepp
9:20       Gemini water tunnel testing            Paul Gillett
9:40       The Gemini South wind loading study Myung Cho
10:10      Analysis of the Gemini data            Oleg Likhatchev
10:50      Break
11:00      Previous CFD modeling of Gemini telescope and enclosure
           Dave DeYoung
11:30      Enclosures for Extremely Large Telescopes      David
           Halliday
12:00      Lunch

11/26/01               NIO Workshop on Wind Modeling           LMS
                              Agenda

November 26 - afternoon

1:00       Wind modeling studies at TSU                Dr. Xu and/or Mark
           Whorton
1:30       What do we need to know for GSMT?           George Angeli
2:00       Discussion of what we have learned so far about telescope wind
           loading
3:00       Break
3:20       Discussion of next efforts
5:00       Adjourn
6:30       Dinner



11/26/01                 NIO Workshop on Wind Modeling                 LMS
                              Agenda

November 27 - morning
9:00       Planning session for additional studies
11:00      Establish action items
12:00      Adjourn Workshop
           Lunch




11/26/01                 NIO Workshop on Wind Modeling   LMS
                           Who we are
                        Association of Universities
                        for Research in Astronomy



Space Telescope     National Solar           National Optical            Gemini
Science Institute    Observatory         Astronomy Observatory         Observatory




                                                             AURA New
                                                          Initiatives Office



    11/26/01              NIO Workshop on Wind Modeling                        LMS
                     NOAO

• Operates telescopes on Kitt Peak, Arizona
  and Cerro Tololo and Cerro Pachon, Chile
• Runs Time Allocation Committees that assign
  observing time to US Astronomers
• Develops new facilities for ground-based
  astronomy




11/26/01      NIO Workshop on Wind Modeling   LMS
                            Gemini

• Gemini Observatory is an international
  partnership of 7 countries
     •     United States
     •     United Kingdom
     •     Canada
     •     Chile
     •     Argentina
     •     Brazil
     •     Australia

11/26/01              NIO Workshop on Wind Modeling   LMS
                         Gemini

• There are two Gemini telescopes, each 8
  meters in diameter
     • Mauna Kea, Hawai’i
     • Cerro Pachon, Chile




11/26/01           NIO Workshop on Wind Modeling   LMS
                      Background

• In the past, observatory domes were designed to
  shield the telescope from the wind as much as possible
• However, massive domes with minimal ventilation
  trapped heat
    • Degraded seeing
• Many telescopes of the current generation have vents
  to provide natural ventilation
    • Improved seeing
    • More concern about wind buffeting



11/26/01             NIO Workshop on Wind Modeling   LMS
                      Background

• Observatories are interested in wind modeling for two
  reasons:
     • Understand seeing effects
     • Understand wind buffeting
• Many previous wind studies for existing telescopes
  were more concerned with seeing
• Plans for future extremely large telescopes depend
  on understanding wind buffeting



11/26/01             NIO Workshop on Wind Modeling     LMS
                      GSMT
• NIO is developing design concepts for a 30-
  meter Giant Segmented Mirror Telescope
• Wind buffeting will be a key issue




11/26/01       NIO Workshop on Wind Modeling    LMS
            Goals for the Workshop
• Review previous wind flow studies of Gemini
  Telescopes
     • Evaluate what has already been learned
• Identify key parameters involved in wind loading of
  telescopes
• Identify further studies on Gemini Telescopes to
  increase our understanding of wind loading on larger
  telescopes
• Set priorities for upcoming studies
• Reach agreement on division of labor for studies
11/26/01             NIO Workshop on Wind Modeling      LMS
                            Agenda

November 26 - morning
9:00       Welcome and introduction               Larry Stepp
9:20       Gemini water tunnel testing            Paul Gillett
9:40       The Gemini South wind loading study Myung Cho
10:10      Analysis of the Gemini data            Oleg Likhatchev
10:50      Break
11:00      Previous CFD modeling of Gemini telescope and enclosure
           Dave DeYoung
11:30      Enclosures for Extremely Large Telescopes      David
           Halliday
12:00      Lunch

11/26/01               NIO Workshop on Wind Modeling           LMS

				
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