ICS FLUID FLOW
’lbm’ is a mass unit called ‘pounds mass’. It is numerically equal to ‘lbf’, (1 lbm = 1 lbf), but they are not the same. ‘lbf’ is a unit of force. If you use lbm units for ( in calculating Re, then use a ( = 6.74E-4 lbm(ft-1(s-1, as shown below. You will need to convert the mass density from slug/ft3 to lbm/ft3. Note that 1 … ................
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