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For a laminar flow that undergoes a combined entrance process within a constant surface temperature tube of length L < xfd,t with a flow rate of $\\dot{m}$. Assuming Pr = 3

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What expression can we use to calculate the Nusselt number?

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The $Nu$ number that you found is a function of what dimensionless numbers?

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Does $Pr$= $ v $ /$α$ vary if the mass flow rate changes?

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Does $Pr$= $ v $ /$α$ vary if the tube length changes?

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Does $Re$ number vary if the mass flow rate changes?

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Does ReD number vary if the tube length changes?

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Does GzD number vary if the mass flow rate changes?

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Does GzD number vary if the tube length changes?

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How does ReD number vary if the mass flow rate changes from $\\dot{m}$ to $\\dot{m}/N$ ?

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How does GzD number vary if the tube length changes from $L$ to ${L}\\over{N}$, but mass flow rate stays as $\\dot{m}$ ?

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How does GzD number vary if the tube length changes from $L$ to ${L}\\over{N}$, and mass flow rate changes from $\\dot{m}$ to $\\dot{m}/N$?

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How would Gz number change if the tube is divided into N shorter tubes, each of length LN = L/N with a flow rate of $\\dot{m}/N$ ? (see the figure below)

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How would the $Nu_D$ number vary if the tube is divided into N shorter tubes, each of length LN = L/N with a flow rate of $\\dot{m}/N$ ?

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How would convection coefficient vary if the tube is divided into N shorter tubes, each of length LN = L/N with a flow rate of $\\dot{m}/N$ ?

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Can the heat transfer be improved if the tube is divided into shorter tubes, each of lengthLN =L/with a flow rate of $\\dot{m}/N$ ?

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