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â ScienceWhich outcome occurs when injecting viscous liquid into turbulent flow?
A)Increased pressure drop downstreamâ
B)Reduced wall shear stress locally
C)Enhanced laminar sublayer stability
D)Elevated convective heat transfer
đĄ Explanation
Increased pressure drop occurs because viscous liquids dissipate more energy through viscous friction which resists flow due mixing in increased turbulence zones. Therefore momentum diffusion rises, generating energy dissipation enhancing drag forces rather than reducing it.
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