The Practical Questions and Examples of Subsonic branch

The Fanno is applicable also when the flow isn't choke^9.18. In this case, several questions appear for the subsonic branch. This is the area shown in Figure (9.8) in beginning for between points 0 and a. This kind of questions made of pair given information to find the conditions of the flow, as oppose to only one piece of information given in choked flow. There many combinations that can appear in this situation but there are several more physical and practical that will be discussed here.