A vorticity based theory for the computation and analysis of the aerodynamic force in steady and unsteady compressible flows is presented. It is the extension of a recent decomposition developed for incompressible flows. The breakdown in reversible and irreversible contributions is presented and a comparison with an unsteady thermodynamic drag breakdown is discussed. In particular, two physically completely different flows are analyzed: a pitching airfoil in subsonic flows and an airfoil natural buffet. A sensitivity analysis of the vortical method on the total force computation is presented. Then the breakdown results are compared and discussed.

Aerodynamic force and Lamb vector field in compressible unsteady flows / Ostieri, Mario; Tognaccini, Renato; Bailly, Didier; Destarac, Daniel. - In: AIAA PAPER. - ISSN 0146-3705. - 2018-0548(2018), pp. 1-15. [10.2514/6.2018-0548]

Aerodynamic force and Lamb vector field in compressible unsteady flows

Ostieri, Mario
;
Tognaccini, Renato;
2018

Abstract

A vorticity based theory for the computation and analysis of the aerodynamic force in steady and unsteady compressible flows is presented. It is the extension of a recent decomposition developed for incompressible flows. The breakdown in reversible and irreversible contributions is presented and a comparison with an unsteady thermodynamic drag breakdown is discussed. In particular, two physically completely different flows are analyzed: a pitching airfoil in subsonic flows and an airfoil natural buffet. A sensitivity analysis of the vortical method on the total force computation is presented. Then the breakdown results are compared and discussed.
2018
Aerodynamic force and Lamb vector field in compressible unsteady flows / Ostieri, Mario; Tognaccini, Renato; Bailly, Didier; Destarac, Daniel. - In: AIAA PAPER. - ISSN 0146-3705. - 2018-0548(2018), pp. 1-15. [10.2514/6.2018-0548]
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/700409
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 5
  • ???jsp.display-item.citation.isi??? ND
social impact