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Clearance gap flow: extended pneumatic measurements and simulations by discontinuous Galerkin finite element method

Citace:
HÁLA, J., LUXA, M., BUBLÍK, O., PRAUSOVÁ, H., VIMMR, J. Clearance gap flow: extended pneumatic measurements and simulations by discontinuous Galerkin finite element method. In EPJ Web of Conferences - Experimental Fluid Mechanics 2015. Praha: Owned by the authors, published by EDP Sciences,, 2016. s. 1-6. ISBN: neuvedeno , ISSN: 2101-6275
Druh: STAŤ VE SBORNÍKU
Jazyk publikace: eng
Anglický název: Clearance gap flow: extended pneumatic measurements and simulations by discontinuous Galerkin finite element method
Rok vydání: 2016
Místo konání: Praha
Název zdroje: Owned by the authors, published by EDP Sciences,
Autoři: Jindřich Hála , Ing. Martin Luxa Ph.D. , Ing. Ondřej Bublík Ph.D. , Ing. Helena Prausová , Doc. Ing. Jan Vimmr Ph.D.
Abstrakt EN: 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.
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