Which outcome occurs when a high Reynolds number fluid encounters a sudden pipe constriction?

💡 Explanation

Decreased pressure recovery downstream arises because increased Reynolds number favors turbulence. Turbulent kinetic energy is dissipated because internal friction opposes flow; therefore decreased pressure recovery occurs, rather than increased laminar flow in the constriction.

• Which outcome follows surpassing Stirling engine's design compression ratio?
• Which outcome occurs when a Stirling engine operates with an imperfect regenerator regarding its thermal mass?
• Surgical femtosecond lasers can ablate tissue; which mechanism ensures pulse energy focuses tightly?
• Which direction does reversible reaction shift during product removal?
• Which effect increases when a rapidly spinning black hole's event horizon shrinks?
• Which risk increases when molten steel injection meets a cold mold?