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← ScienceWhich outcome decreases fuel efficiency when gas flow increases through supersonic jet engine fuel injectors?
A)Onset of turbulent fuel pulsations✓
B)Increased laminar boundary layer adhesion
C)Decreased vapor pressure downstream
D)Enhanced static pressure fuel atomization
💡 Explanation
Turbulence arises when the Reynolds number exceeds a critical value, introducing chaotic flow. Turbulent dissipation generates unsteady fuel flow because kinetic energy converts to heat, rather than uniform momentum transfer. Therefore, efficiency drops rather than improves due to laminar flow.
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