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duct roughness??

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  • December 19, 2014 at 4:30 pm #335
    Leonktz LeonktzLeonktz Leonktz
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    Hi,
    what does the duct roughness imply?
    in the openwam tutorial it is mentioned that its standard value is 0.15.
    why is that??

    December 23, 2014 at 4:07 pm #501
    sreenathiit12sreenathiit12
    Member

    It is the typical roughness of the steel.

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