Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Physics of Fluids
10 (1998), S. 2941-2949
ISSN:
1089-7666
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Stochastic estimation was utilized to reconstruct estimates of multipoint conditional averages in an axisymmetric sudden expansion. Application of this technique requires, in addition to the two-point correlation tensor, time series data measured at selected positions simultaneously. One application of this technique yielded estimates of the spatial and temporally evolving velocity field in a given azimuthal plane of the sudden expansion. An application of this technique in the reattachment region clearly shows its unsteady character. The spectra measurements as well as the stochastic estimates utilizing multipoint conditions applied over two directions suggest that coherent structures from the near field shear layer propagate downstream into the reattachment region and cause this unsteadiness. © 1998 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.869814
|
Location |
Call Number |
Expected |
Availability |
