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我做氢气泄漏扩散的场景，计算域很大35035060m，但是泄漏孔径很小 只有30mm 结果是 氢气只扩散三层网格 就不动了 像是喷射不出来 请问怎么解决呢？
计算域是350m乘以350m乘以60m 目前把计算域缩小后可以喷射出来 如果要维持之前的计算域 是否能够通过更改一些扩散系数之类的 让他喷射出来？
