In the Darcy-Weisbach equation h_f = f (L/D) (V^2/(2g)), h_f is proportional to which combination?

Prepare for the Intermediate Hydraulics Test with our comprehensive study resources. Explore quizzes featuring multiple-choice questions, in-depth explanations, and hints. Ace your exam with confidence!

Multiple Choice

In the Darcy-Weisbach equation h_f = f (L/D) (V^2/(2g)), h_f is proportional to which combination?

Explanation:
The head loss from friction scales with the combination f (L/D) V^2 because the equation is h_f = f (L/D) (V^2/(2g)). The factor 1/(2g) is just a constant, so the essential proportional part is f (L/D) V^2. Friction factor and the length-to-diameter ratio are dimensionless, so the velocity term appears as V^2, not V or V^3. The option with f squared would wrongly imply a squared friction factor, which isn’t part of the formula.

The head loss from friction scales with the combination f (L/D) V^2 because the equation is h_f = f (L/D) (V^2/(2g)). The factor 1/(2g) is just a constant, so the essential proportional part is f (L/D) V^2. Friction factor and the length-to-diameter ratio are dimensionless, so the velocity term appears as V^2, not V or V^3. The option with f squared would wrongly imply a squared friction factor, which isn’t part of the formula.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy