Q. When is a fluid called turbulent?

किसी तरल पदार्थ को अशांत कब कहा जाता है?

A
High viscosity
उच्च चिपचिपापन
B
Reynolds number > 2000
रेनॉल्ड्स संख्या > 2000
C
Reynolds number < 2000
रेनॉल्ड्स संख्या
D
Low density
कम घनत्व

Explanation

Reynolds number (Re) determines the flow regime:

  • Re < 2000: Laminar flow

  • Re > 2000: Transitional/turbulent flow (often considered turbulent if Re > 4000)

Turbulence implies chaotic and irregular fluid motion.

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