Decay of Temperature Fluctuations in MHD Turbulence before the Final Period in a Rotating System

Abstract

Using Deissler's approach the Decay of temperature fluctuations in MHD turbulence before the final period in a rotating system is studied and have considered correlations between fluctuating quantities at two and three point. In this case two and three-point correlation equations in a rotating system is obtained and the set of equations is made to determinate by neglecting the quadruple correlations in comparison to the second and third order correlations. The correlation equations are converted to special form by taking their Fourier-transforms. Finally integrating the energy spectrum over all wave numbers the energy decay law of temperature fluctuations in MHD turbulence before the final period in a rotating system is obtained. Key words: Deissler's method; MHD turbulence; Rotating system; Temperature fluctuation. DOI: 10.3329/bjsir.v44i4.4604 Bangladesh J. Sci. Ind. Res. 44(4), 407-414, 2009