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3 cards from this section. Quick, good the night before a test.
Define Reynolds number and its importance in fluid flow.
Consider the ratio of inertial to viscous forces.
What is the formula for local drag coefficient C_D?
Think about how shear stress relates to flow characteristics.
What describes the turbulent boundary layer?
Consider the defining characteristics of fluid motion.
True or False: The drag coefficient increases with rising Reynolds number in turbulent flow.
Think about how flow smoothens with higher Re.
Given a flat plate with properties of air flowing at 5 m/s, calculate the boundary layer thickness after 2 meters, assuming a cubic velocity profile.
Structure the problem using Reynolds number calculations.
Using the empirical equation C_D = 0.455 / (log10(R_e) ^ 2.58), derive the average drag coefficient if R_e = 7.5*10^7.
Focus on logarithmic calculations.
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