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Quadratic Stress Law :. u’ ū & u’ , v’ , w’ are of similar magnitude. Can use the Law of the Wall to examine C d. Under HSF Under HRF. Typical drag coefficient values:. Example of variability:. Sternberg - Comprehensive study in Puget Sound Solved for C 100 : Results:

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## Quadratic Stress Law :

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**Quadratic Stress Law:**• u’ ū & u’, v’, w’ are of similar magnitude Can use the Law of the Wall to examine Cd**Under HSF**Under HRF**Typical drag coefficient values:**Example of variability:**Sternberg - Comprehensive study in Puget Sound**• Solved for C100: • Results: • 1. C100 varied between two regions of flow (HRF and HTF to HSF). • 2. In HTF too much variability in C100 to be able to use this method, but in HRF, C100 approaches a single value • 3. Variability of the mean ~ as large as the variability at any single location - • Acceptable value: C100 = 3.1 x 10-3 (range 2-4 x 10-3)

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