Question

1. It is possible to have turbulent flow with a Reynolds number less than the typical critical value. (True/False) 2. The average Nusselt number is 2 times the local Nusselt number for laminar flow in fluids with a Prandtl number greater than 0.6. (True/False) 3. The average convective heat transfer coefficient for a long flat plate is greater than the average heat transfer coefficient for that same plate divided into N shorter sections (for laminar flow). (True/False) 4. For the situation in Question 3, is the difference more or less pronounced for fully turbulent flow? (More/Less) 5. What is the value for eta (the Greek letter η) at the outer edge of the boundary layer? (0 / .332 / 5 / 15 / It depends on the physical system)

          1. It is possible to have turbulent flow with a Reynolds number less than the typical critical value. (True/False)
    2. The average Nusselt number is 2 times the local Nusselt number for laminar flow in fluids with a Prandtl number greater than 0.6. (True/False)
    3. The average convective heat transfer coefficient for a long flat plate is greater than the average heat transfer coefficient for that same plate divided into N shorter sections (for laminar flow). (True/False)
    4. For the situation in Question 3, is the difference more or less pronounced for fully turbulent flow? (More/Less)
    5. What is the value for eta (the Greek letter η) at the outer edge of the boundary layer? (0 / .332 / 5 / 15 / It depends on the physical system)

Added by Ryan B.

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