Lagrangian irreversibility and Eulerian dissipation in fully developed turbulence
نویسندگان
چکیده
منابع مشابه
Universality in fully developed turbulence.
We extend the numerical simulations of She et al. (1993)] of highly turbulent ow with 15 Taylor-Reynolds number Re 200 up to Re 45 000, employing a reduced wave vector set method (introduced earlier) to approximately solve the Navier-Stokes equation. First, also for these extremely high Reynolds numbers Re , the energy spectra as well as the higher moments { when scaled by the spectral intensit...
متن کاملFully developed turbulence and statistical mechanics
2014 This paper gives a self contained review of some recent progress of the statistical theory of fully developed turbulence. The emphasis is on both analogies and differences with Hamiltonian statistical mechanics, in particular critical phenomena. The method of spectral equations, which plays to a certain extent the role of a mean field theory, is discussed in detail. It is here viewed as a ...
متن کاملGeneralized Additive Entropies in Fully Developed Turbulence
We explore a possible application of the additive generalization of the BoltzmannGibbs-Shannon entropy proposed in [A. N. Gorban, I. V. Karlin, Phys. Rev. E, 67:016104 (2003)] to fully developed turbulence. The predicted probability distribution functions are compared with those obtained from Tsallis’ entropy and with experimental data. Consequences of the existence of hidden subsystems are ill...
متن کاملLagrangian and Eulerian velocity structure functions in hydrodynamic turbulence.
The Lagrangian and Eulerian transverse velocity structure functions of fully developed fluid turbulence are found based on the inviscid Navier-Stokes equation. The structure functions are shown to obey the scaling relations S(n)(L)(tau) proportional to tau(xi(n)) and S(n)(E)(l) proportional to l(zeta(n)) inside the inertial range. The scaling exponents zeta(n) and xi(n) are calculated analytica...
متن کاملPair dispersion in synthetic fully developed turbulence.
The Lagrangian statistics of relative dispersion in fully developed turbulence is numerically investigated. A scaling range spanning many decades is achieved by generating a two-dimensional velocity field by means of a stochastic process with prescribed statistics and of a dynamical model (shell model) with fluctuating characteristic times. When the velocity field obeys Kolmogorov similarity, t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Fluids
سال: 2020
ISSN: 2469-990X
DOI: 10.1103/physrevfluids.5.042601