Modification of the Algebraic Transition Model for Wall Roughness Effect Including a Rough Strip

0522511 - ÚT 2021 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Straka, P. - Příhoda, Jaromír
Modification of the Algebraic Transition Model for Wall Roughness Effect Including a Rough Strip.
Topical Problems of Fluid Mechanics 2020. Praha: Ústav termomechaniky AV ČR, v. v. i., 2020 - (Šimurda, D.; Bodnár, T.), s. 222-229. ISBN 978-80-87012-74-1. ISSN 2336-5781.
[Topical Problems of Fluid Mechanics 2020. Praha (CZ), 19.02.2020-21.02.2020]
Grant CEP: GA TA ČR(CZ) TN01000007; GA TA ČR(CZ) TH02020057
Institucionální podpora: RVO:61388998
Klíčová slova: bypass-transition * wall roughness * rough strip
Obor OECD: Mechanical engineering
http://www2.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2020/29-TPFM2020.pdf

The contribution deals with the simulation of the laminar/turbulent transition on a rough wall. The algebraic transition model taking into account wall roughness according to Straka and Příhoda [8] was further extended for the effect of short rough strip near the leading edge. The proposed correlation was tested by means of incompressible flow over a flat plate covered by sand paper and around the NACA 0012 airfoil with a rough strip near the leading edge. The agreement with experiments is appropriate nevertheless the applicability of the correlation is limited due to the lack of relevant experimental results.
Trvalý link: http://hdl.handle.net/11104/0313325