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A numerical strategy to compute optical parameters in turbulent flow: application to telescopes

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10.1016/j.compfluid.2009.07.005
 
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hdl:2117/7722

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Codina, RamonMés informacióMés informacióMés informació
Baiges Aznar, JoanMés informacióMés informacióMés informació
Pérez Sánchez, Daniel
Collados, Manuel
Document typeArticle
Defense date2010-01
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
We present a numerical formulation to compute optical parameters in a turbulent air flow. The basic numerical formulation is a large eddy simulation (LES) of the incompressible Navier–Stokes equations, which are approximated using a finite element method. From the time evolution of the flow parameters we describe how to compute statistics of the flow variables and, from them, the parameters that determine the quality of the visibility. The methodology is applied to estimate the optical quality around telescope enclosures.
CitationCodina, R. [et al.]. A numerical strategy to compute optical parameters in turbulent flow: application to telescopes. "Computers and fluids", Gener 2010, vol. 39, núm. 1, p. 87-98. 
URIhttp://hdl.handle.net/2117/7722
DOI10.1016/j.compfluid.2009.07.005
ISSN0045-7930
Publisher versionhttp://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V26-4WV15KP-1&_user=1517299&_rdoc=1&_fmt=&_orig=search&_sort=d&_docanchor=&view=c&_acct=C000053450&_version=1&_urlVersion=0&_userid=1517299&md5=295923d1f9d650ec5b100b1871bf1403
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