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Which outcome results when a microfluidic channel narrows significantly?

A)Flow transitions to laminar regime
B)Viscous forces dominate inertial forces
C)Cavitation risk in channel decreases
D)Fluid density variations get magnified

💡 Explanation

At small scales, a reduction in channel size dramatically lowers the Reynolds number; therefore viscous forces become greater than inertial forces because the Momentum Diffusion mechanism dampens turbulent effects rather than inertial instability dominating as in wider channels.

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