Three-point velocity correlation functions in two-dimensional forced turbulence

نویسندگان

چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

On The Three Point Velocity Correlation Functions in 2d Forced Turbulence

We present a simple exact formula for the three point velocity correlation functions in two dimensional turbulence which is valid on all scales and which interpolates between the direct and inverse cascade regimes. As expected, these correlation functions are universal in these extreme regimes. We also discuss the effect of anisotropy and friction. Member of the CNRS; [email protected]...

متن کامل

Logarithmic Correlation Functions in Two Dimensional Turbulence

We consider the correlation functions of two-dimensional turbulence in the presence and absence of a three-dimensional perturbation, by means of conformal field theory. In the persence of three dimensional perturbation, we show that in the strong coupling limit of a small scale random force, there is some logarithmic factor in the correlation functions of velocity stream functions. We show that...

متن کامل

The Exact Two–Point Correlation Functions of Forced Burgers Equation in Two and Three–Dimensions

We generelize the Polyakov’s approach for Burgers turbulence in higher dimensions. In this respect, we write the operator product expansion and find the exact two–point functions of the Burgers equation in two and three–dimensions. We show that the angular dependence of the correlation functions satisfy the same equation, which is found in the instanton approach. PACS numbers 47.27.AK, 47.27.Jv

متن کامل

Lagrangian statistics in forced two-dimensional turbulence.

We report on simulations of two-dimensional turbulence in the inverse energy cascade regime. Focusing on the statistics of Lagrangian tracer particles, scaling behavior of the probability density functions of velocity fluctuations is investigated. The results are compared to the three-dimensional case. In particular an analysis in terms of compensated cumulants reveals the transition from a str...

متن کامل

Exact Two–Point Correlation Functions of Turbulence Without Pressure in Three–Dimensions

We investigate exact results of isotropic turbulence in three–dimensions when the pressure gradient is negligible. We derive exact two–point correlation functions of density in three-dimensions and show that the density–density correlator behaves as |x1 − x2|−α3 , where α3 = 2 + √ 33 6 . It is shown that, in three–dimensions, the energy spectrum E(k) in the inertial range scales with exponent 2...

متن کامل

ذخیره 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 E

سال: 1999

ISSN: 1063-651X,1095-3787

DOI: 10.1103/physreve.60.6184