INVESTIGADORES
ARTANA Guillermo Osvaldo
artículos
Título:
Frequency-selection mechanism in incompressible open-cavity flows via reflected instability waves
Autor/es:
FLORIAN TUERKE; DENISSE SCIAMARELLA; LUC PASTUR; FRANCOIS LUSSEYRAN; GUILLERMO ARTANA
Revista:
PHYSICAL REVIEW E
Editorial:
AMER PHYSICAL SOC
Referencias:
Lugar: New York; Año: 2015
ISSN:
1539-3755
Resumen:
We present an alternative perspective on nonharmonic mode coexistence, commonly found in the shear
layer spectrum of open-cavity flows. Modes obtained by a local linear stability analysis of perturbations to
a two-dimensional, incompressible, and inviscid sheared flow over a cavity of finite length and depth were
conditioned by a so-called coincidence condition first proposed by Kulikowskii [J. Appl. Math. Mech. 30, 180
(1966)] which takes into account instability wave reflection within the cavity. The analysis yields a set of discrete,
nonharmonic frequencies, which compare well with experimental results [Phys. Fluids 20, 114101 (2008); Exp.
Fluids 50, 905 (2010)].