Head Loss in Pipe - Roughness, Velocity, Length

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SUMMARY

The discussion focuses on calculating head loss in a horizontal 150 mm diameter pipe with a mean velocity of 2.5 m/s and a surface roughness of 0.15 mm over a length of 30 m. Participants emphasize the use of the Darcy-Weisbach equation and the Moody chart to determine the friction factor and Reynolds number. The Reynolds number is calculated using the formula Re = ρVD/μ, which is essential for identifying the flow regime as laminar or turbulent. Accurate head loss calculations are critical for effective fluid dynamics analysis in engineering applications.

PREREQUISITES
  • Understanding of the Darcy-Weisbach equation
  • Knowledge of fluid dynamics concepts, including Reynolds number
  • Familiarity with the Moody chart for friction factor determination
  • Basic principles of pipe flow and head loss calculations
NEXT STEPS
  • Study the application of the Darcy-Weisbach equation in various fluid flow scenarios
  • Learn how to accurately use the Moody chart for different flow conditions
  • Explore the impact of surface roughness on head loss in pipes
  • Investigate advanced fluid dynamics topics, such as turbulent flow modeling
USEFUL FOR

Engineers, fluid mechanics students, and professionals involved in pipeline design and analysis will benefit from this discussion, particularly those focused on calculating head loss and optimizing fluid flow in piping systems.

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Water flows through a horizontal 150 mm diameter pipe with a mean velocity of 2.5m/s. The surface roughness of the pipe is 0.15mm. Determine the head loss in a 30m length of the pipe. Hints, use moody chart, Re = ρVD/μ.

Been having trouble with the question, can't seem to do it.
 
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