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奇怪了,今天用OPENFOAM算模型,发现对流项的格式对结果影响很大。 参考论文里面用的fluent,稳态求解器,论文说对流项用的二阶迎风格式 但是我在Openfoam里面,用的simpleFoam,把div项设成upwind算的反而比LinearUpwind更接近论文的计算结果。 不知道数目原因。。
@Samuel-Tu upwind只有一阶精度,更对得上其他论文的数据,得查看其他原因了