The equations of motion for laminar flow of a real fluid are known as?

Fluid Mechanics | Question ID: 1115

⭕ (a) Euler's equations

⭕ (b) Bernoulli's equations

⭕ (c) Navier-Stokes\' equation

⭕ (d) Hagen-Poiseuille\'s equation

⭕ (e) Froude\'s equation

Explanation: The Navier-Stokes equation is fundamental in fluid mechanics. It represents the motion of real fluids, especially in laminar conditions, by considering:

• ✔️ Gravity force
• ✔️ Pressure force
• ✔️ Viscous force

It neglects turbulence and compressibility in laminar flow. This equation is key to analyzing real-world flow behavior.

Navier-Stokes Equation for Real Fluid Motion

This MCQ is from fluid mechanics and focuses on identifying the correct equation governing real fluid flow under laminar conditions.

Why Navier-Stokes?

• Describes laminar flow in real fluids
• Accounts for all major forces acting in the fluid
• Forms the foundation for CFD (Computational Fluid Dynamics)

Conclusion:

The correct answer is Navier-Stokes' equation. It plays a central role in understanding fluid behavior under laminar flow conditions and is essential for civil, mechanical, and aerospace engineering applications.