Course Code: 5620534
METU Credit (Theoretical-Laboratory hours/week): 3(3-0)
ECTS Credit: 8.0
Language of Instruction: English
Level of Study: Graduate
Course Coordinator: Prof.Dr. ZAFER BOZKUŞ
Offered Semester: Fall or Spring Semesters.

Course Objective

To equip the students with the comprehensive knowledge of concepts of unsteady closed conduit flow by building on their steady flow understanding of the subject which was introduced to them in their undergraduate curriculum. To teach them how to solve the fluid transient problems in space and time domain for the two dependent variables, pressure (or head) and velocity (or discharge), after derivation of the governing equations from control volume approach, and their algebraic forms based on the Method of Characteristics. To show the students how great magnitudes of pressure wave peaks may occur and how fast those pressure waves may travel back and forth within the system, and how dangerous they can get. Next, they will be taught how to handle these transients with some control mechanisms, such as surge tanks, air chambers, etc.

Course Content

Fluid transient flow (water hammer) concepts. Basic differential equations for transient flow. Solution of differential equations by Method of Characteristics. Transients caused by turbopumps. Transients in hydroelectric power plants. Column separation, air release and entrapped air. Methods for controlling transients: wave speed reduction methods, air chambers, surge tanks. (R)

Learning Outcomes

The students will see the entire picture of unsteady flow in closed conduits. The topics in the course will enhance greatly the students' motivation and understanding towards unsteady flow in closed conduits. They will appreciate more the consequences of potential causes triggering the unsteady flow. Thus, through the course, they will gain the knowledge of how to avoid and/or control the transient events in hydraulic systems in the cheapest and most efficient ways possible.