Batchelor–Chandrasekhar equation
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The Batchelor–Chandrasekhar equation is the evolution equation for the scalar functions, defining the two-point velocity correlation tensor of a homogeneous axisymmetric turbulence, named after George Batchelor and Subrahmanyan Chandrasekhar.[1][2][3][4] They developed the theory of homogeneous axisymmetric turbulence based on Howard P. Robertson's work on isotropic turbulence using an invariant principle.[5] This equation is an extension of Kármán–Howarth equation from isotropic to axisymmetric turbulence.