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中文摘要：
提出Lagrange（拉格朗日）非结构网格高阶交错型守恒气体动力学格式．用产生于当前时刻子网格密度和网格声速的子网格压力和MUSCL方法构造了高阶子网格力，利用高阶子网格力构造了高阶空间通量，借助时间中点通量的Taylor（泰勒）展开完成了高阶时间通量离散．研制了La-grange非结构网格高阶交错型守恒气体动力学格式．对Sahzman活塞问题等进行了数值模拟，数值结果显示了Lagrange非结构网格高阶交错型守恒气体动力学格式的有效性和精确性．
英文摘要：
A Lagrangian highorder staggered conservative gasdynamics scheme on unstructured meshes was presented.The highorder piecewise pressure on the cell arising from the present moment subcell density and presentmoment subcell acoustic speed was used to construct the highorder subcell force with the MUSCL method. The time discretization of the spatial fluxes was performed by means of the Taylor expansions of the spatial fluxes centered in time. There upon the Lagrangian highorder staggered conservative gasdynamics scheme was established. Several numerical tests were presented to demonstrate the robustness and accuracy of the new scheme.
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