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Heat Transfer - Engineering

Q1:

Pick out the correct equation.

A jH = (St)(Pr)2/3 = f/2

B jH = (St)(Pr)1/3 = f/2

C jH = (St)2/3(Pr) = f/2

D jH = (St)1/3(Pr) = f/2

ANS:A - jH = (St)(Pr)2/3 = f/2

The correct equation is: 𝑗𝐻=(𝑆𝑑)(π‘ƒπ‘Ÿ)2/3=𝑓2jH=(St)(Pr)2/3=2f​ This equation relates the dimensionless heat flux (𝑗𝐻jH) to the Stanton number (𝑆𝑑St) and the Prandtl number (π‘ƒπ‘ŸPr) for a specific flow regime.