Theory of hydrodynamic stability

ID: 3135
Course type: scientific and vocational
Course coordinator: Lečić R. Milan
Lecturers: Lečić R. Milan
Contact: Lečić R. Milan
Level of studies: Ph.D. (Doctoral) studies – Mechanical Engineering
ECTS: 5
Final exam type: oral

Lectures

Goal

Gaining knowlegde from linear and nonlinear theory of hydrodynamic stability, which gives the opportunity of own research in this area.

Outcome

Student will gain knowledge from theory of hydrodynamic stability. This knowledge can be used for scientific researh in this area of fluid dynamics.

Theoretical teaching

Fundamental concepts of hydrodynamic stability. Kelvin-Helmholtz instability. Thermal instability. Centrifugal instability, the Taylor problem, the Dean problem and the Gortler problem.The inviscid and viscous theory for parallel shear flow. Heuristic methods of approximation. Approximations to the eigenvalue relation. Symmetrical flows in a channel. Flows of the boundary layer type. Numerical methods of solution. Stabiity characteristics of various basic flows. Plane Coutte flow, Poiseuille flow in a circular pipte, Plane Poiseuille flow. Uniform asymptotic approximations. Additional topics in linear stability theory. Nonlinear stability. Fundamental concepts of nonlinear stability. Additional fundamental concepts of nonlinear stability.

Practical teaching

Calculations of linear stability problems in laminar flows.

Attendance requirement

Passed exam in Selected Chapters in Fluid Mechanics.

Resources

Assigned hours

Total assigned hours: 65

Active teaching (theoretical)

New material: 45
Elaboration and examples (recapitulation): 5

Active teaching (practical)

Auditory exercises: 0
Laboratory exercises: 0
Calculation tasks: 0
Seminar paper: 0
Project: 0
Consultations: 0
Discussion/workshop: 0
Research study work: 0

Knowledge test

Review and grading of calculation tasks: 0
Review and grading of lab reports: 0
Review and grading of seminar papers: 0
Review and grading of the project: 0
Test: 0
Test: 10
Final exam: 5

Knowledge test (100 points total)

Activity during lectures: 0
Test/test: 50
Laboratory practice: 0
Calculation tasks: 0
Seminar paper: 0
Project: 0
Final exam: 50
Requirement for taking the exam (required number of points): 0

Literature

P.G. Drazin, W.H.Reid: Hydrodynamic stability, Cambridge University press, 2004.