Implementation of stability-based transition model by means of transport equations

Lucas Pascal , Grégory Delattre , Hugues Deniau , Guillaume Bégou (1) , Julien Cliquet (2)

1 DAAA, ONERA, Université Paris-Saclay (COmUE) [Châtillon]
2 Airbus Operation S.A.S.

A natural laminar-turbulent transition model compatible with Computation Fluid Dynamics is presented. This model accounts for longitudinal transition mechanisms (i.e. Tollmien-Schlichting induced transition) thanks to systematic stability computation on similar boundary profiles from Mach zero to four both on adiabatic and isothermal wall. The model embeds as well the so-called “C1-criterion” for transverse transition mechanisms (i.e. cross-flow waves induced transition). The transition model is written under transport equations formalism and has been implemented in the solver elsA (ONERA-Airbus-Safran property). Validations are performed on three dimensional configurations and comparisons are shown against a database method for natural transition modeling and experiments.

Mots clés: Transition; RANS; Tollmien-Schlichting; Crossflow; Boundary-layer

Domaines: Autre

Lucas Pascal, Grégory Delattre, Hugues Deniau, Guillaume Bégou, Julien Cliquet. Implementation of stability-based transition model by means of transport equations. AIAA Aviation 2019 Forum, Jun 2019, Dallas, United States. pp.1-17. ⟨hal-02976703⟩