EGM3310 – Fluid Mechanics Application Exercise 1: Problems
1-7 Solutions | Actual verified study complete Solutions | 2026
Updates | 100% correct
Problem 1
Consider the flow of air over the wings of an aircraft. Is this flow internal or
external? How about the flow of gasses through a jet engine? Explain why.
Solution
Given: We are to determine if the flow of air over the wings of an aircraft is internal or
external, the flow of gasses through the jet engine, and explain why.
Analysis: The flow of air over an aircraft is considered external flow because of the flow
of an unbounded air over the aircraft's wing. The flow of gasses through a jet engine is
considered internal flow because of the flow in a pipe or duct and because the fluid is
completely bounded by a solid surface.
Discussion: Since the air flow is going around the wing and not being confined by the
wing it would be external and the gas is confined by the jet's engine so it would be
considered internal flow.
Problem 2
What is the no-slip condition? What causes it?
Solution
Given: We are to determine what no-slip condition and what causes it
Analysis: No-slip condition is a fluid in direct contact with a solid and “sticks” to the
surface and there is no slip occurring. What causes the no-slip condition is viscosity,
which is the fluid property for the no-slip condition and the development for the
boundary layer.
Discussion: We are assuming discussing how no-slip happens and what happens
when no-slip is occurring.
Problem 3
A pump is used to transport water to a higher reservoir. If the water temperature is
at 25°C, determine the lowest pressure that can exist in the pump without
, cavitation.
Solution
1-7 Solutions | Actual verified study complete Solutions | 2026
Updates | 100% correct
Problem 1
Consider the flow of air over the wings of an aircraft. Is this flow internal or
external? How about the flow of gasses through a jet engine? Explain why.
Solution
Given: We are to determine if the flow of air over the wings of an aircraft is internal or
external, the flow of gasses through the jet engine, and explain why.
Analysis: The flow of air over an aircraft is considered external flow because of the flow
of an unbounded air over the aircraft's wing. The flow of gasses through a jet engine is
considered internal flow because of the flow in a pipe or duct and because the fluid is
completely bounded by a solid surface.
Discussion: Since the air flow is going around the wing and not being confined by the
wing it would be external and the gas is confined by the jet's engine so it would be
considered internal flow.
Problem 2
What is the no-slip condition? What causes it?
Solution
Given: We are to determine what no-slip condition and what causes it
Analysis: No-slip condition is a fluid in direct contact with a solid and “sticks” to the
surface and there is no slip occurring. What causes the no-slip condition is viscosity,
which is the fluid property for the no-slip condition and the development for the
boundary layer.
Discussion: We are assuming discussing how no-slip happens and what happens
when no-slip is occurring.
Problem 3
A pump is used to transport water to a higher reservoir. If the water temperature is
at 25°C, determine the lowest pressure that can exist in the pump without
, cavitation.
Solution
