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Which outcome occurs when Reynold's number exceeds design limits within a centrifugal microfluidic device?

A)Onset of turbulent mixing occurs
B)Laminar flow stabilizes further
C)Surface tension effects dominate
D)Fluid viscosity increases substantially

💡 Explanation

Turbulent mixing begins because exceeding the design Reynold's number transitions the flow. This causes chaotic, irregular fluid motion within microchannels caused by inertial forces overcoming viscous drag, therefore enhancing radial mixing rather than stable laminar operation.

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