1983 Volume 52 Issue 12 Pages 4138-4144
The structure of turbulent boundary layers on a flat plate is examined using flow visualization methods. The experimental results suggest that turbulent boundary layers consist of various kinds of instability waves. The main waves are T–S waves, G1 waves and G2 waves. The T–S wave is a large-scale two-dimensional wave produced as a result of the instability of the mean velocity distribution. The G1 and G2 waves are three-dimensional waves produced at the trough of T–S waves as a result of centrifugal instability.
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