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Clearance gap flow: Simulations by discontinuous Galerkin method and experiments
- 1.0459166 - ÚT 2017 RIV FR eng J - Journal Article
Hála, Jindřich - Luxa, Martin - Bublík, O. - Prausová, H. - Vimmr, J.
Clearance gap flow: Simulations by discontinuous Galerkin method and experiments.
EPJ Web of Conferences. Roč. 92, May (2016), 02073-02073. ISSN 2100-014X.
[EFM14 – Experimental Fluid Mechanics 2014. Český Krumlov, 18.11.2014-21.11.2014]
Institutional support: RVO:61388998
Keywords : compressible fluid flow * narrow channel flow * discontinuous Galerkin finite element method
Subject RIV: BK - Fluid Dynamics
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.
Permanent Link: http://hdl.handle.net/11104/0261303
Number of the records: 1