- #1
coasterguy
- 2
- 0
Dimensional analysis, I'm kinda lost
- Thread starter coasterguy
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SUMMARY
The discussion focuses on the dimensional analysis of the wind force formula F = 0.00256 Cd V² A, where F represents wind force in lbf, Cd is the drag coefficient, V is wind velocity in mi/h, and A is the projected area in ft². The key question raised is about determining the units of the constant 0.00256 to ensure dimensional homogeneity in the equation. Participants emphasize the importance of understanding the drag coefficient and identifying missing variables necessary for non-dimensionalizing the term.
PREREQUISITES- Understanding of dimensional analysis in physics
- Familiarity with the concept of drag coefficient (C_d)
- Knowledge of units of force, area, and velocity
- Basic algebra skills for manipulating equations
- Research dimensional homogeneity in physics equations
- Learn about the significance of the drag coefficient (C_d) in fluid dynamics
- Explore methods for non-dimensionalizing physical equations
- Study the relationship between force, area, and velocity in aerodynamics
Students in physics or engineering courses, educators teaching dimensional analysis, and anyone interested in understanding the principles of fluid dynamics and aerodynamics.
- #2
djeitnstine
Gold Member
- 611
- 0
Since you know this already, I will answer your question with another question.
What is the full definition of [tex]C_d[/tex] ?
What 2 important variables are missing to non-dimensionalize that term there?
As your topic implies, check your units.
What is the full definition of [tex]C_d[/tex] ?
What 2 important variables are missing to non-dimensionalize that term there?
As your topic implies, check your units.
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