Uniform and Non-Uniform Flow MCQ Quiz in বাংলা - Objective Question with Answer for Uniform and Non-Uniform Flow - বিনামূল্যে ডাউনলোড করুন [PDF]

Explanation:

Uniform flow is defined as the type of flow in which the velocity at any given time does not change with respect to space.

\({\left( {\frac{{\partial V}}{{\partial s}}} \right)_{t = const}} = 0\)

Non-Uniform flow is defined as the type of flow in which the velocity at any given time changes with respect to space.

\({\left( {\frac{{\partial V}}{{\partial s}}} \right)_{t = const}} \ne 0\)

Non - uniform Flow: When the fluid properties change with respect to space, the type of flow is known as Non - uniform flow.

Steady Flow: When the fluid properties do not change with respect to time, then the flow is known as steady flow.

Unsteady flow: When the fluid properties changes with respect to time, then the flow is known as unsteady flow.

Rotational flow: When the fluid particles rotate about their centre of mass, then the flow is known as rotational flow.

• The flow of liquid through a long pipe of constant diameter at a constant rate is a steady uniform flow
• The flow of liquid through a long pipeline of constant diameter, at either increasing or decreasing rate, is unsteady – uniform flow
• The flow of liquid through a tapering pipe at a constant rate is steady non – uniform flow
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• The flow through a tapering pipe at either increasing or decreasing rate is unsteady – non – uniform flow.

Explanation:

The Type of Flow in Fluid Mechanics

• The type of flow being described involves the velocity at any given point in the flow not changing with respect to space.

• This type of flow is termed as Uniform Flow, where the velocity remains constant at all spatial locations in the flow field.

• In contrast, Steady Flow refers to a flow where the velocity at a given point does not change with time.

• Other types like Compressible Flow involve changes in density due to pressure variations, and Laminar Flow refers to smooth, orderly fluid motion.

• Hence, the correct answer to the question is Option 3: Uniform Flow, where velocity remains constant with respect to space.

Additional Information Key Terms in Fluid Mechanics:

• Steady Flow: A flow where the velocity at a given point does not change with time.
• Uniform Flow: A flow where the velocity does not change with respect to space.
• Compressible Flow: A flow where density changes significantly due to pressure variations.
• Laminar Flow: A smooth and orderly flow of fluid, often represented by parallel streamlines.