Quiz - Forced Convection in External Flows
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Question 1 of 10
1. Question
In a computer, the cooling of electronic components by forcing air over them using a fan is an example of _____ heat transfer
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Question 2 of 10
2. Question
The ratio of convective to conductive heat transfer between a solid and fluid is generally referred to as the _______
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Question 3 of 10
3. Question
For gases, which of the following is true?
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Question 4 of 10
4. Question
For the case of forced convection, experiments show that Nusselt number is a function of _____ and _______
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Question 5 of 10
5. Question
For liquid metals ($Pr \ll 1$), the velocity boundary layer is _____ the thermal boundary layer.
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Question 6 of 10
6. Question
According to Reynold’s analogy, which of the following is true?
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Question 7 of 10
7. Question
In a laminar flow over a flat plate, the average Nusselt number is _____ the local Nusselt number.
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Question 8 of 10
8. Question
In laminar flows, for any fluid with Pr > 0.6, the ratio of hydrodynamic to thermal boundary layer ($\ \delta/\delta_t$) is approximately equal to ______.
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Question 9 of 10
9. Question
In turbulent flows, the hydrodynamic boundary layer thickness is ______ the thermal boundary layer thickness.
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Question 10 of 10
10. Question
In the case of a laminar flow over a cylinder, the heat transfer coefficient ______ from the stagnation point to the separation point.
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