Discussion
The pressure coefficient is defined as the difference between local and free-stream static pressure divided by
Answer: D
Correct answer: The free-stream dynamic pressure
The pressure coefficient is
\[ C_p = \frac{p - p_\infty}{\tfrac{1}{2}\rho V_\infty^{2}} \]
Dividing by dynamic pressure is what makes it dimensionless and comparable between conditions: the same shape at the same angle gives the same \( C_p \) distribution whatever the speed or altitude, within compressibility limits.
Its value is 1 at a stagnation point, where the local pressure equals the total pressure, and negative wherever the flow is faster than the free stream - which is most of a wing's upper surface.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development