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! A物质在设置的反应区域有初始值,A的源项与B有关,计算B的分布。
那么A与B的反应应该发生在红色框,但是计算的B的值在设置区域后面
请问是对流项太强吗,反应后生成的B都被冲到后面的区域了,我将流速降低还是这样的。
你把流速设置为0,看看还飘不。
不飘就说明不是计算出错了,是A、B都太轻了。多小的流速,都直接带走