Flashcards in Models Deck (4)
What are the advantages of numerical models?
-Often the cheap option
-Computer models produce pretty pictures
Why are physical models still needed? (advantages)
- not all equations describing fluid motion can be mathematically solved
-no analytical solution for complex, turbelent flows exist, always must make simplifications in terms of the flow characteristics, roughness etc
when are physical models used?
-Validation and calibration of numerical models(hybrid modelling)
-Testing of numerical model results
-cost saving for projects
-Providing design guidelines for hydraulic engineers (design charts such as the moody diagram)
-advancing fundamental understading of complex fluid processes
-when failure of a structure could be a catastrophe