Clearance gap flow: simulations by discontinuous Galerkin method and experiments

0453209 - ÚT 2016 RIV FR eng C - Konferenční příspěvek (zahraniční konf.)
Prausová, H. - Bublík, O. - Vimmr, J. - Luxa, Martin - Hála, Jindřich
Clearance gap flow: simulations by discontinuous Galerkin method and experiments.
EFM14 - EXPERIMENTAL FLUID MECHANICS 2014. Paris: E D P SCIENCES, 2015 - (Vít, T.; Dančová, P.), s. 02073-02073. EPJ Web of Conferences, 92. ISSN 2100-014X.
[Experimental Fluid Mechanics 2014. Český Krumlov (CZ), 18.11.2014-21.11.2014]
Institucionální podpora: RVO:61388998
Klíčová slova: numerical simulation * narrow channels * compressible fluid flow
Kód oboru RIV: BK - Mechanika tekutin

Compressible viscous fluid flow in a narrow gap formed by two parallel plates in distance of 2 mm is investigated numerically and experimentally. Pneumatic and optical methods were used to obtain distribution of static to stagnation pressure ratio along the channel axis and interferograms including the free outflow behind the channel. Modern developing discontinuous Galerkin finite element method is implemented for numerical simulation of the fluid flow. The goal to make progress in knowledge of compressible viscous fluid flow characteristic phenomena in minichannels is satisfied by finding a suitable approach to this problem. Laminar, turbulent and transitional flow regime is examined and a good agreement of experimental and numerical results is achieved using gamma - Re-theta t transition model.
Trvalý link: http://hdl.handle.net/11104/0255144