Calculate the boundary layer thickness at both occasions and compare it?
Answer to Problem 7.3P
If the flow is turbulent throughout the flow, the
Or
Therefore, fully turbulent flow will have a boundary layer thickness which is almost
Explanation of Solution
Given information:
Laminar to turbulent transition point is given as
Velocity of the flow is equal to
For laminar flow,
The Reynolds’s number is defined as,
In above equation,
For turbulent flow,
Assume, air at
Calculation:
Calculate the distance from leading edge at critical point,
Calculate the relevant boundary layer thickness,
Find the relevant leading edge distance for turbulent flow,
Now, at
Find the effective length,
Find the effective Reynolds’s number,
Calculate the boundary layer thickness,
Now, calculate the boundary layer thickness for all turbulent flow,
Conclusion:
If the flow is turbulent throughout the flow, the
Or
Therefore, fully turbulent flow will have a boundary layer thickness which is almost
Want to see more full solutions like this?
Chapter 7 Solutions
Fluid Mechanics
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY