LSST summit enclosure-facility design optimization using aero-thermal modeling

J. Sebag; K. Vogiatzis; J. Barr; D. Neill

doi:10.1117/12.925446

25 September 2012 LSST summit enclosure-facility design optimization using aero-thermal modeling

J. Sebag, K. Vogiatzis, J. Barr, D. Neill

Proceedings Volume 8449, Modeling, Systems Engineering, and Project Management for Astronomy V; 844904 (2012) https://doi.org/10.1117/12.925446
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

This paper describes Computational Fluid Dynamic (CFD) analyses combined with thermal analyses for modeling the effects of passive ventilation, enclosure-building configuration and topography on the optical performance of the Large Synoptic Survey Telescope (LSST). The primary purpose of the analyses was to evaluate the seeing contribution of the major enclosure-facility elements and to select the features to be adopted in the baseline design from among various configurations being explored by the LSST project and the contracted architectural design team. In addition, one of several simulations for different telescope orientations is presented including various wind-telescope relative azimuth angles. Using a post-processing analysis, the effects of turbulence and thermal variations within the airflow around the buildings and inside the telescope-enclosure configuration were determined, and the optical performance due to the thermal seeing along the optical path was calculated.

Citation Download Citation

J. Sebag, K. Vogiatzis, J. Barr, and D. Neill "LSST summit enclosure-facility design optimization using aero-thermal modeling", Proc. SPIE 8449, Modeling, Systems Engineering, and Project Management for Astronomy V, 844904 (25 September 2012); https://doi.org/10.1117/12.925446

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