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Clearance gap flow: Simulations by discontinuous Galerkin method and experiments
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SYSNO ASEP 0459166 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve SCOPUS Title Clearance gap flow: Simulations by discontinuous Galerkin method and experiments Author(s) Hála, Jindřich (UT-L) RID, ORCID
Luxa, Martin (UT-L) RID, ORCID
Bublík, O. (CZ)
Prausová, H. (CZ)
Vimmr, J. (CZ)Source Title EPJ Web of Conferences - ISSN 2100-014X
Roč. 92, May (2016), 02073-02073Number of pages 6 s. Publication form Online - E Action EFM14 – Experimental Fluid Mechanics 2014 Event date 18.11.2014-21.11.2014 VEvent location Český Krumlov Country CZ - Czech Republic Event type EUR Language eng - English Country FR - France Keywords compressible fluid flow ; narrow channel flow ; discontinuous Galerkin finite element method Subject RIV BK - Fluid Dynamics Institutional support UT-L - RVO:61388998 EID SCOPUS 84937468101 DOI 10.1051/epjconf/20159202073 Annotation In the present paper, new results of measurements of the compressible viscous fluid flow in narrow channels with parallel walls under the conditions of aerodynamic choking are presented. Investigation was carried out using the improved test section with enhanced capability to accurately set the parallelism of the channel walls. The measurements were performed for the channels of the dimensions: length 100 mm, width 100 mm and for various heights in the range from 0.5 mm to 4 mm. The results in the form of distribution of the static pressure along the channel axis including the detailed study of the influence of the deviation from parallelism of the channel walls are compared with previous measurements and with numerical simulations performed using an in-house code based on Favre averaged system of Navier-Stokes equations completed with turbulence model of Spalart and Allmaras and a modification of production term according to Langtry and Sjolander. The spatial discretization of the governing equations is performed using the discontinuous Galerkin finite element method which ensures high order spatial accuracy of the numerical solution. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2017
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