Question:
If every particle of fluid has irregular flow, that flow is said to be:
If every particle of fluid has irregular flow, that flow is said to be:
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For pipe flow, a Reynolds number ($Re$) greater than 4000 usually indicates turbulent flow, while $Re$ less than 2100 indicates laminar flow.
Updated On: Jul 4, 2026
- Laminar flow
- Turbulent flow
- Fluid flow
- Laminar flow & Turbulent flow
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The Correct Option is B
Solution and Explanation
Concept:
Fluid flow is classified based on the behavior of fluid particles over time and space.
• Laminar Flow: Particles move in smooth, parallel layers or streamlines.
• Turbulent Flow: Particles move in a chaotic, irregular, and zigzag manner.
• Reynolds Number ($Re$): Used to predict the transition between these flows.
Step 1: Analyzing particle motion.
In a smooth flow, particles follow a defined path without crossing each other. When the velocity increases beyond a critical point, this order breaks down.
Step 2: Characteristics of Irregular Flow.
Irregular flow is marked by the formation of eddies and vortices. The velocity at any given point fluctuates significantly in both magnitude and direction.
Step 3: Matching with the definition.
The specific term for flow characterized by irregular particle paths is "Turbulent." Final Answer: (B)
• Laminar Flow: Particles move in smooth, parallel layers or streamlines.
• Turbulent Flow: Particles move in a chaotic, irregular, and zigzag manner.
• Reynolds Number ($Re$): Used to predict the transition between these flows.
Step 1: Analyzing particle motion.
In a smooth flow, particles follow a defined path without crossing each other. When the velocity increases beyond a critical point, this order breaks down.
Step 2: Characteristics of Irregular Flow.
Irregular flow is marked by the formation of eddies and vortices. The velocity at any given point fluctuates significantly in both magnitude and direction.
Step 3: Matching with the definition.
The specific term for flow characterized by irregular particle paths is "Turbulent." Final Answer: (B)
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