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Which effect limits peak flow rate through small injectors at high frequency?

A)Increased viscous pressure drop
B)Kinetic energy dissipation
C)Reynolds number elevation
D)Wall contact electrification

💡 Explanation

Increased viscous pressure drop occurs because momentum transfer increases near the walls. This increased momentum transfer restricts maximal flow rate through small spaces; therefore, the flow is viscosity-limited rather than inlet pressure limited.

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