low-amplitude wave; smallamplitude wave

A weak wave approximation of the Riemann solver was adopted to deal with the weak discontinuity,while the non-iterative Riemann solution was introduced in strong discontinuity.

在弱间断的条件下,采用弱波近似的黎曼解来描述粒子间的相互作用;在强间断的条件下,则引入非迭代黎曼解来描述粒子间的相互作用。