Extension of the algebraic transition model for the wall roughness effect

0459159 - ÚT 2017 RIV FR eng J - Článek v odborném periodiku
Straka, P. - Příhoda, Jaromír
Extension of the algebraic transition model for the wall roughness effect.
EPJ Web of Conferences. Roč. 114, March (2016), 02114-02114. ISSN 2100-014X.
[Experimental Fluid Mechanics 2015 /10./. Praha, 17.11.2015-20.11.2015]
Grant CEP: GA TA ČR(CZ) TA03020277; GA ČR GAP101/12/1271
Institucionální podpora: RVO:61388998
Klíčová slova: CFD * transition modelling * wall roughness
Kód oboru RIV: BK - Mechanika tekutin
http://dx.doi.org/10.1051/epjconf/201611402114

The contribution deals with the simulation of the laminar/turbulent transition taking into account the effect of wall roughness. The correlation for the transition onset proposed by Straka and Příhoda [1] was modified for the effect of the wall roughness using the correlation according to Boyle and Stripf [2]. This correlation derived for the wall roughness formed by regularly distributed truncated cones was modified for flows over the distributed wall roughness. The algebraic transition model proposed by Straka and Příhoda [1] with the modified relation for the transition onset was verified by means of the incompressible flat-plate boundary-layer and the compressible flow through the turbine blade cascade with rough blades.
Trvalý link: http://hdl.handle.net/11104/0261302