University of Zagreb Faculty of Mechanical Engineering and Naval Architecture
Course Title Semester*
Code
GAS DYNAMICS Program**
No of hours per week: lectures + exercises ME, AE 2 + 1 Professor Zdravko Virag
Total
ECTS credits
6 or 8 18594 30+15 4 Lecturer: Course objective: This course covers the basic concepts and results for the compressible flow of gases and introduction to the numerical method of characteristics. Topics to be covered include conservation laws, propagation of disturbances, isentropic flow, compressible flow in ducts with area changes, normal and oblique shock waves and applications, Prandtl-Meyer flow and applications, simple flows such as Fanno flow and Rayleigh flow with applications to nozzles, and propulsion related concepts. The method of characteristics will be described in one dimensional unsteady isentropic flow. The emphasis will be on the physical understanding of the phenomena and basic analytical results. Prerequisite: Fluid Mechanics, Thermodynamics Learning outcomes: Upon completion of the course, students will be able to: • Formulate and solve problems in one -dimensional steady compressible flow including: isentropic nozzle flow, constant area flow with friction (Fanno flow) and constant area flow with heat transfer (Rayliegh flow). • Derive the conditions for the change in pressure, density and temperature for flow through a normal shock. • Determine the strength of oblique shock waves on wedge shaped bodies and concave corners. • Determine the change in flow conditions through a Prandtl-Meyer expansion wave. • Complete a numerical analysis to solve an unsteady one-dimensional flow problem. Course contents Lecture/Topic: 1.
Review of basic fluid dynamic and thermodynamic principles
2.
One-dimensional wave motion, normal shock waves
3.
Oblique shock waves
4.
Prandtl-Meyer expansions and applications
5.
Generalized one-dimensional flow
6.
Isentropic flow with area change
7.
Flow with friction (Fanno flow)
8.
Flow with heat addition (Rayleigh flow)
9.
Method of characteristics (application to one-dimensional unsteady isentropic flow)
Recommended literature: P. Oosthusien, W. Carscallen: Compressible fluid flow, McGraw Hill. Type of exercises:
x auditory;
laboratory;
practicum;
design;
x final exam; x continuous testing; other Examination : Croatian Language YES Tutorials in English for incoming students * Bachelor program: Semesters 1-7, Master program: Semesters 8-10 ** ME – Mechanical Engineering, NA – Naval Architecture, AE – Aeronautical Engineering
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