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Question 3.12.3: Continuing with the parameters of Ex. 12–1, determine the to...

Continuing with the parameters of Ex. 12–1, determine the total volumetric flow rate Q and the side flow rate Q_s .

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To estimate the lubricant flow, enter Fig. 12–19 with S = 0.135 \ and \ {l}/{d} = 1 \ to \ obtain \ {Q}/{\left(r c N l \right)} = 4.28 . The total volumetric flow rate is

Q = 4.28 r c N l = 4.28 \left(0.75\right)0.0015 \left(30\right) 1.5 = 0.217 \ {in^3}/{s}

From Fig. 12–20 we find the flow ratio {Q_s}/{Q}= 0.655 \ and \ Q_s is

Q_s = 0.655Q = 0.655 \left(0.217\right) = 0.142 \ in^3/s

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