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-   -   Wet or dry mass for calculating virtual mass of a towed object? (http://www.cfd-online.com/Forums/main/65484-wet-dry-mass-calculating-virtual-mass-towed-object.html)

kateedwards11 June 16, 2009 09:56

Wet or dry mass for calculating virtual mass of a towed object?
 
I would like to calculate the virtual mass (actual mass plus added mass) of a towed object, including the lines used to tow it. I'm calculating the mass of each component and summing them up. Do I use the wet rather than dry mass? If so, does it matter that a section of line is buoyant, so its wet mass is negative? [I guess it still requires force to tow it because its added mass is positive, but the concept is confusing.]


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