Introduces Gramian moment closure via Gram-matrix orthogonal polynomials, claiming attractive properties and superior accuracy over Grad and maximum-entropy closures for gas particle distributions.
Pichard, A moment closure based on a projection on the boundary of the realizability domain: 1d case , Kinetic and related models, 13 (2020), pp
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On Nonlinear Closures for Moment Equations Based on Orthogonal Polynomials
Introduces Gramian moment closure via Gram-matrix orthogonal polynomials, claiming attractive properties and superior accuracy over Grad and maximum-entropy closures for gas particle distributions.