Discussion
Model tests of armour stability are run at as large a scale as possible because
Answer: B
Correct answer: viscous effects within the armour layer diminish as scale grows
Model tests are scaled on the Froude criterion, which preserves the ratio of inertial to gravitational forces but not viscous ones, so the flow within the armour voids is relatively more viscous in the model than in the prototype. The discrepancy shrinks as the model is enlarged, and a Reynolds number above about 30,000 within the armour layer is the usual requirement for the results to be transferable.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development