Digitale Medien
New York, NY
:
American Institute of Physics (AIP)
Physics of Fluids
3 (1991), S. 2421-2425
ISSN:
1089-7666
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
Rotation of initially anisotropic homogeneous flows is studied using a model spectral tensor. It is shown that the anisotropy changes because of the influence of rotation through phase scrambling. Phase scrambling causes the Reynolds stresses to develop with damped oscillations. The final Reynolds stress anisotropy is found to be proportional to the initial structural tensor anisotropy. Closure models for the rapid pressure strain terms should reflect this change in anisotropy, and should drive the anisotropy to reach its final predicted state. Finally, it is shown that long-time integration using direct numerical simulations should be treated with care because phase scrambling effects on a discrete wave space can cause loss of resolution when time becomes large.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.858180
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