Abstract The postulated problem of heat transfer in a stationary isotropic turbulence under constant small temperature gradient is examined from both Lagrangian and Eulerian points of view. By combination of Taylor's ''diffusion by continuous movements'' and a new temperature fluctuationequation somewhat like the wellknown turbulentenergyequation, it is possible to obtain (1) an expression for the turbulentheat transfer coefficient which depends only on velocity field, and (2) an approximate expression for the corresponding correlation coefficient which depends only on velocity field and fluid physical properties. A preliminary result is given for ''turbulent Prandtl Number'' in a homogeneous shear flow in terms of the shear and heat transfer correlation coefficients.

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velocity field tayloraposs diffusion continuous movementsaposapos eulerian turbulentheat transfer coefficient isotropic turbulence small temperature gradient turbulent prandtl numberaposapos homogeneous shear flow shear and heat transfer correlation coefficients wellknown lagrangian fluid physical properties

Stanley Corrsin,.Heat Transfer in Isotropic Turbulence. 23 (1),113.

Stanley Corrsin,"Heat Transfer in Isotropic Turbulence" 23

Stanley Corrsin,"Heat Transfer in Isotropic Turbulence"