High-fidelity Reynolds-Averaged Navier Stokes (RANS) Computational Fluid Dynamics (CFD) analysis of the GMT, enclosure, and LCO terrain is performed to study (a) the impact of either an open or closed enclosure base soffit external shape design, (b) the effect of telescope/enclosure location on the mountain summit, and (c) the effect of enclosure venting patterns. Details on the geometry modeling, grid discretization, and flow solution are first described. Then selected computational results are shown to quantify the quality of the airflow entering the GMT enclosure based on soffit, site location, and venting considerations. Based on the results, conclusions are provided on GMT soffit design, site location, and enclosure venting. The current work is not used to estimate image quality but will be addressed in future analyses as described in the conclusions.
ACCESS THE FULL ARTICLE
John Ladd, Jeffrey Slotnick, William Norby, Bruce Bigelow, William Burgett, "Computational fluid dynamics modeling and analysis for the Giant Magellan Telescope (GMT)," Proc. SPIE 9911, Modeling, Systems Engineering, and Project Management for Astronomy VI, 991114 (9 August 2016);