Fig. 3
From: A unified gas-kinetic scheme for micro flow simulation based on linearized kinetic equation
Order sequence of the modified Eq. 43. L0 axis shows the order sequence of the top three order terms in \(\mathcal {L}_{0}\), L1 axis shows the order sequence of the top three order terms in \(\mathcal {L}_{1}\), L2 axis shows the order sequence of the top three order terms in \(\mathcal {L}_{2}\), L3 axis shows the order sequence of the top three order terms in \(\mathcal {L}_{3}\). Terms that have a higher order than Ï„ need to be included in the calculation of the first three asymptotic expansions of the modified equation