The most essential feature of a Turbulent Flow is?

APPSC AEE (Civil/Mechanical) 2012

⭕ (a) Large discharge

⭕ (b) High velocity

⭕ (c) Velocity and pressure at a point exhibit irregular fluctuations of high frequency

⭕ (d) Velocity at a point remains constant with time

Explanation: The most essential feature of a turbulent flow is that velocity and pressure at a point exhibit irregular fluctuations of high frequency. In turbulent flow, fluid particles move in a zig-zag manner, creating eddies that lead to increased energy loss. These fluctuations are the key indicators of turbulence in fluid mechanics.

Essential Feature of Turbulent Flow

Turbulent flow is characterized by chaotic and irregular motion of fluid particles. The most defining feature is the random fluctuations in velocity and pressure at any given point within the flow.

Key Concepts:

• Turbulent flow shows random fluctuations of velocity and pressure.
• These fluctuations occur at high frequency.
• Flow is disordered, involving eddies and swirls, leading to high energy loss.

Conclusion:

The correct answer is (c) Velocity and pressure at a point exhibit irregular fluctuations of high frequency.