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gas-liquid upflow and downflow in packed bed ,the Ergun pressure drop is same?

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Old   March 11, 2011, 22:26
Default gas-liquid upflow and downflow in packed bed ,the Ergun pressure drop is same?
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wanghongtao
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hello :
i want to simulate the gas-liquid upflow through the packed bed ,In the literature i can find Ergun pressure drop ,but i can not find the Ergun pressure drop formula about upflow through porous media
i want to know :the Ergun pressure drop formula is the same in gas-liquid upflow and downflow in packed bed ???
thanks
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