Initial design factors and airflow analysis for the LSST enclosure

Douglas R. Neill; Jeffrey D. Barr; Victor L. Krabbendam; Kishor K. Khankari; Aashish S. Watave; Yaddanapudi Krishna

doi:10.1117/12.789711

9 July 2008 Initial design factors and airflow analysis for the LSST enclosure

Douglas R. Neill, Jeffrey D. Barr, Victor L. Krabbendam, Kishor K. Khankari, Aashish S. Watave, Yaddanapudi Krishna

Proceedings Volume 7017, Modeling, Systems Engineering, and Project Management for Astronomy III; 70170P (2008) https://doi.org/10.1117/12.789711
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

Cylindrical (carousel) and spherical dome designs for the Large Synoptic Survey Telescope (LSST) were analyzed for air flow characteristics using computational fluid dynamic models. The primary objective was to determine the level of dome flushing achieved with natural ventilation and representative site wind conditions. The domes were 30 meters in diameter at the base, designed to enclose the LSST and provide adequate space for servicing requirements with the smallest possible major dimensions. The carousel style enclosure allowed moderately superior flushing with better uniformity which will produce superior local seeing conditions. Since the cylindrical style enclosure was also determined to be less costly, this concept was chosen as the baseline enclosure design for the LSST.

Citation Download Citation

Douglas R. Neill, Jeffrey D. Barr, Victor L. Krabbendam, Kishor K. Khankari, Aashish S. Watave, and Yaddanapudi Krishna "Initial design factors and airflow analysis for the LSST enclosure", Proc. SPIE 7017, Modeling, Systems Engineering, and Project Management for Astronomy III, 70170P (9 July 2008); https://doi.org/10.1117/12.789711

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