Lam Research Interview Questions, Process, and Tips

Prandtl number is a dimensionless number used in fluid mechanics to describe the ratio of momentum diffusivity to thermal diffusivity.

• It is named after the German physicist Ludwig Prandtl.

• It is used to predict fluid flow behavior and heat transfer in different materials.

• It is calculated as the ratio of kinematic viscosity to thermal diffusivity.

• It is important in the study of boundary layers, turbulence, and convection...read more

Manholes are circular because they cannot fall through their own opening.

• Circular manholes cannot fall through their own opening, unlike square or rectangular ones.

• Circular shape distributes weight evenly, making it easier to move and handle.

• Circular shape also reduces the risk of injury from sharp corners.

• Circular manholes are easier to manufacture and install.

• Circular shape allows for easier access from any angle.

• Cir...read more

Bernoulli's equation relates the pressure, velocity, and height of a fluid in motion.

• Bernoulli's equation is based on the principle of conservation of energy.

• It is commonly used in fluid mechanics to analyze the flow of fluids through pipes and channels.

• The equation states that as the velocity of a fluid increases, its pressure decreases, and vice versa.

• It can be expressed as P + 1/2ρv^2 + ρgh = constant, where P is pr...read more