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【求助】求助拉格朗日方法追蹤顆粒擴(kuò)散 已有7人參與
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請問拉格朗日追蹤顆粒擴(kuò)散就是用拉格朗日模型算嗎?還是也可以用歐拉方法模型啊 [ Last edited by 一把雨傘 on 2010-12-4 at 15:56 ] |

木蟲 (正式寫手)
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flakid 你好 想向您請教個(gè)問題 Cunningham correction factor should not be included in a diffusion coefficient, since the statistics of the random walk process is not affected by the distance between the gas molecules relative to the size of the particle. However, this distance may affect the particle mobility in an external field. 但是很多文獻(xiàn)中給出的顆粒擴(kuò)散系數(shù)表達(dá)式中包含了Cunningham correction factor 。希望大牛們給些建議。 特別是這句話: since the statistics of the random walk process is not affected by the distance between the gas molecules relative to the size of the particle. However, this distance may affect the particle mobility in an external field. 這句話怎么理解?這句話與擴(kuò)散系數(shù)是否應(yīng)該包含Cunningham correction factor有關(guān)系嗎? |
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