Current Attempt in Progress

Consider a $20-$mm tube with engine oil, saturated water, or ethylene glycol flowing through it$.$ If the fluid temperature is $350$ K and the flow rate is $0\mathrm{.}01k\frac{g}{s},$ find the mean velocity, hydrodynamic entry length, and thermal entry length for each fluid.

Step $1$: Engine Oil

Your answer is incorrect.

What is the Reynolds number?

$R{e}_{\text{o}\text{i}\text{l}}=$

$$

Attempts: $2$ of $5$ used

Step $2$: Engine Oil

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