The current paper consist of two main parts: at first CFD simulations are introduced, which have been run compliant to the specifications derived by the environmental conditions and the transient thermal gradients taking into account the presence of the electronic cabinets installed, which are triggering the boundary conditions for the outer structure of the instrument; then a thermal control model is proposed based on heat exchangers to stabilize the inner temperature when compensation via passive insulation is not enough. The tools that have been adopted to reach for such goal are Ansys Multiphysics, in particular CFX package and Python scripts.
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I. Di Varano, M. Woche, K. G. Strassmeier, "Thermal control modeling approach for GRAPE (GRAntecan PolarimEter)," Proc. SPIE 9911, Modeling, Systems Engineering, and Project Management for Astronomy VI, 991115 (9 August 2016);