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CE 3305 Engineering Fluid Mechanics
Summer 2022 Exercise Set 19

LAST NAME, FIRST NAME

R00000000

Purpose :

Apply principles of form drag and boundary layers for a high-speed rail design

Assessment Criteria :

Completion, plausible solutions, use JupyterLab as a calculator.

Problem 1.

High-speed rail (HSR) trains are streamlined to reduce shear force. The cross section of a HSR car is shown in Figure 1.

Figure 1: High-Speed Rail Car.

For a 204 meter long train, estimate:

  1. The shear force on the car skin as 110 km/hr.
  2. The shear force on the car skin as 290 km/hr.
  3. The power (in kilowatts) required to just to overcome the frictional shear force at 110 km/hr.
  4. The power (in kilowatts) required to just to overcome the frictional shear force at 290 km/hr.
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# sketch here
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# list known quantities
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# list unknown quantities
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# governing principles
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# solution (step-by-step)
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# discussion