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MMLU-Pro / 11455 / Determine the distance downstream from the bow of a ship moving at…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

Determine the distance downstream from the bow of a ship moving at 7.59ktsrelative to still water at which the boundary layer becomes turbulent. Also, determine the boundary layer thickness at this point and the total friction drag coefficient for this portion of the surface of the ship. Let the maximum value of Reynolds number R_x = 5 × 10^5 be where the flow ceases to be laminar, so that the flow is turbulent for R_x > 5 × 10^5. Assume \rho = 1.94 slugs/ft^3 and ѵ = 1.21 × 10^-5 ft^2/sec.

category

engineering

options

  1. 0.55 ft, 0.0110 ft, 2.50 × 10^-3
  2. 0.5 ft, 0.0100 ft, 1.00 × 10^-3
  3. 0.62 ft, 0.0115 ft, 2.20 × 10^-3
  4. 0.42 ft, 0.0120 ft, 2.00 × 10^-3
  5. 0.47 ft, 0.0102 ft, 1.92 × 10^-3
  6. 0.48 ft, 0.0090 ft, 1.70 × 10^-3
  7. 0.53 ft, 0.0105 ft, 1.50 × 10^-3
  8. 0.60 ft, 0.0095 ft, 1.80 × 10^-3
  9. 0.35 ft, 0.0135 ft, 2.10 × 10^-3
  10. 0.40 ft, 0.0085 ft, 2.30 × 10^-3

src

stemez-FluidMechanics

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Source and history

upstream_id / Original problem ID
11455
task_id
32f7fe62-5370-5aa7-9114-da07d69159ce
task_key
default--test--11455
task_revision_id
1
config / split
default / test

Official source

initial import