Application of the Scale-Adaptive Simulation to a Hot Jet in Cross Flow

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Application of the Scale-Adaptive Simulation to a Hot Jet in Cross Flow

Duda, Benjamin M. / Menter, Florian R. / Deck, Sébastien / Bézard, Hervé / Hansen, Thorsten / Estève, Marie-Josephe

The basic flow phenomenon of a hot jet ejected transversely into a cold cross flow is investigated on a generic air-system outlet of an aircraft. Because standard statistical turbulence models cannot properly account for the mixing and because of the high Reynolds number of this wall-bounded flow, the scale-adaptive simulation is considered. Numerical results are validated against experimental data, and the influence of the physical time-step size on the solution is regarded. To evaluate the influence of the underlying numerical grid, three meshing strategies are investigated. Validation of the transient flowfield allows the analysis of transport and mixing phenomena that are associated with a jet in cross flow at the small jet to cross-flow velocity ratio considered in this work. To gain deeper insight into the inherent dynamics of the flow, a proper orthogonal decomposition is carried out on a subdomain of the flow. It is shown that the second mode reveals the wake meandering as an important thermal mixing phenomenon.

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Document information

Title :

Application of the Scale-Adaptive Simulation to a Hot Jet in Cross Flow

Contributors:

Duda, Benjamin M. (author) / Menter, Florian R. (author) / Deck, Sébastien (author) / Bézard, Hervé (author) / Hansen, Thorsten (author) / Estève, Marie-Josephe (author)

Published in:

AIAA Journal ; 51 , 3 ; 674-685

Publication date :

2012-11-23

Size :

12 pages

ISSN :

0001-1452 , 1533-385X

DOI :

https://doi.org/10.2514/1.J052021

Type of media :

Article (Journal)