A realizable finite-volume scheme for bivariate velocity moments

3 A realizable finite-volume scheme for bivariate velocity moments 

The realizable scheme for Eq. (8.98) can be written in the standard flux form  

Note that, because the Gauss-Hermite quadrature weights and abscissas depend only on the number of points, they need be computed only once if M and M2 are constant (which will usually be the case). 

For the free-transport problem in Eq. (8.98), the realizable numerical flux function is 

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