独孤伊人 发表于 2021-4-14 15:51:08

【求助】示踪剂法求浓度分布是否要用udf定义扩散系数?

vof两相流模型,物质为水和空气。用示踪剂法追踪物质求浓度场时,需要用udf或uds定义扩散系数吗?代码该怎么写呀?这是计算舍伍德数用到的方程,从这方程看,需要用到udf吗?谢谢帮助,感激不尽!data:image/png;base64,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