1. Give the classification of flow regimes in terms of ranges of M and Re. 2. Defi ne thermal accommodation coefficient. What does it physically mean? 3. Show that for air the recovery factor r =...

1. Give the classification of flow regimes in terms of ranges of M and Re.

2. Defi ne thermal accommodation coefficient. What does it physically mean?

3. Show that for air the recovery factor r = 1.17, which indicates that recovery temperature of free-molecule flow is greater than stagnation temperature.

4. Explain transpiration cooling. What is film cooling?