1. How does the friction factor for turbulent flow through a tube depend on the Reynolds number? 2. What do you mean by relative roughness? Explain Moody’s chart to determine the friction factor. 3....

1. How does the friction factor for turbulent flow through a tube depend on the Reynolds number?

2. What do you mean by relative roughness? Explain Moody’s chart to determine the friction factor.

3. Explain the conditions under which Dittus– Boelter equation can be used to determine the heat transfer coefficient.