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23 August 2024 GMT primary mirror thermal control system and thermal deformation modeling framework
Konstantinos Vogiatzis, Henry Fitzpatrick, Rod Conan, Trupti Ranka, Gary Muller, Bo Xin, David Ashby
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Proceedings Volume 13099, Modeling, Systems Engineering, and Project Management for Astronomy XI; 130992M (2024) https://doi.org/10.1117/12.3020295
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan
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Abstract
Conjugate heat transfer modeling is used to estimate the front temperature distribution, thermal deformation, and differential pressure distribution of the GMT primary mirror (M1) segments. The modeling framework validates segment temperature and thermal deformation requirements and supports the M1 optical testing underway. This paper presents the various framework models, the predicted baseline performance, and a sensitivity analysis of the impact of several heat sources on the expected thermal deformation, including simulations specific to optical testing.
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Konstantinos Vogiatzis, Henry Fitzpatrick, Rod Conan, Trupti Ranka, Gary Muller, Bo Xin, and David Ashby "GMT primary mirror thermal control system and thermal deformation modeling framework", Proc. SPIE 13099, Modeling, Systems Engineering, and Project Management for Astronomy XI, 130992M (23 August 2024); https://doi.org/10.1117/12.3020295
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KEYWORDS
Thermal deformation
Mirrors
Thermal modeling
Computational fluid dynamics
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