Knowledge card
Half-scaled Skin-friction Group
Mathematical Modelling — Fluid Dynamics & Heat TransferContinuum mechanics; boundary-layer similarity theory
Symbol
The standard skin-friction coefficient C_f = τ_w/(½ρ_fU_w²), written as the similarity group ½Re_x^½C_f. Equivalently, Re_x^½C_f is twice the wall-stress expression.
Dimension I
Definition
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Dimension II
In practice
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