3-D Perturbations in Conformal Turbulence

نویسنده

  • L. Moriconi
چکیده

The effects of three-dimensional perturbations in two-dimensional turbulence are investigated, through a conformal field theory approach. We compute scaling exponents for the energy spectra of enstrophy and energy cascades, in a strong coupling limit, and compare them to the values found in recent experiments. The extension of unperturbed conformal turbulence to the present situation is performed by means of a simple physical picture in which the existence of small scale random forces is closely related to deviations of the exact two-dimensional fluid motion. PACS numbers: 47.27.Gs, 11.15.Hf Typeset using REVTEX 1

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

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

13 [1]A.M.Polyakov,Thetheoryofconformalturbulenceintwodimensions,Nucl. References [2]D.A.Lowe,Conformalmodelsoftwo-dimensionalturbulence,Mod.Phys.Lett. Phys.B396(1993)367. [3]G.FalkovichandA.Hanany,SpectraofConformalTurbulence,PreprintWIS-92- A8(1993)923.

Table 2: Allowed perturbations of the rst nine minimal models. 13 References 1] A .M. Polyakov, The theory of conformal turbulence in two dimensions, Nucl. 12 Acknowledgements O.C. gratefully thanks the University of London for sponsoring part of this research in the form of a postgraduate studentship, and also acknowledges the help given to him by C.Kobdaj. S.T. would like to thank O. A. Solov...

متن کامل

Conformal Turbulence with Boundary

Based upon the formalism of conformal field theory with a boundary, we give a description of the boundary effect on fully developed two dimensional turbulence. Exact one and two point velocity correlation functions and energy power spectrum confined in the upper half plane are obtained using the image method. This result enables us to address the infrared problem of the theory of conformal turb...

متن کامل

Predictions on Two - dimensional Turbulence by Conformal Field Theory

A generalized theory of two-dimensional isotropic turbulence is developed based on con-formal symmetry. A number of minimal models of conformal turbulence are solved under an extended constraint including both the enstrophy cascade by Kraichnan and the discontinuity of vorticity by Saffman. There are an infinite number of solutions which fall into two different categories. An explicit relation ...

متن کامل

A Comparative Study of 3-D Conformal Radiotherapy Treatment Plans with and Without Deep Inspiration Breath-Hold Technique for Left-Sided Breast Cancer

Introduction: The rate of cardiac diseases have increased among patients who underwent radiotherapy for left-sided breast cancer. The study’s aim was evaluate the dose to organs at risk in free-breathing 3-dimensional conformal (FB-3DCRT) against 3-dimensional conformal deep inspiration breath-hold (3DCRT-DIBH) in patients with left-sided breast cancer. Ma...

متن کامل

ar X iv : a st ro - p h / 96 12 24 3 v 1 3 1 D ec 1 99 6 MHD Turbulence Revisited

Kraichnan (1965) proposed that MHD turbulence occurs as a result of collisions between oppositely directed Alfvén wave packets. Recent work has generated some controversy over the nature of non linear couplings between colliding Alfvén waves. We find that the resolution to much of the confusion lies in the existence of a new type of turbulence, intermediate turbulence, in which the cascade of e...

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

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

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1998