is the right eigenvector component (l=1,2,3) by Roe's average state between the element  and the satellite element 1. A hybrid type form of  is used

                                 (13)

where  represents the characteristic speed component by Roe's average state between element  and 1;  denotes the average wave strength component;  is a limiter. The MUSCL type limiter of Van Leer is used, which has moderate dissipative and compressible performance;  is a dissipative function put forward by Harten. The definitions of all these variables are given in Ref.[10]. The ratio between time and space is

                                                           (14)

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