Partial Different Equations: Modelling, Analysis and Numerical Approximation
Code: 44211 ECTS Credits: 6| Degree | Type | Year | Semester |
|---|---|---|---|
| 4313136 Modelling for Science and Engineering | OT | 0 | 2 |
Contact
- Name:
- Francisco Javier Mora Gine
- Email:
- xavier.mora@uab.cat
Teaching groups languages
You can check it through this link. To consult the language you will need to enter the CODE of the subject. Please note that this information is provisional until 30 November 2023.
Teachers
- Susana Serna Salichs
Prerequisites
Students should have basic knowledge of calculus, algebra, ordinary and partial differential equations, and basic notions of programming.
Objectives and Contextualisation
Many phenomena that unfold in space and/or time can be modelled by means of partial differential equations. The purpose of this course is to provide the main concepts about such models as well as numerical methods for computing their solution.
Competences
- Analyse, synthesise, organise and plan projects in the field of study.
- Apply logical/mathematical thinking: the analytic process that involves moving from general principles to particular cases, and the synthetic process that derives a general rule from different examples.
- Apply specific methodologies, techniques and resources to conduct research and produce innovative results in the area of specialisation.
- Apply techniques for solving mathematical models and their real implementation problems.
- Formulate, analyse and validate mathematical models of practical problems in different fields.
- Isolate the main difficulty in a complex problem from other, less important issues.
- Present study results in English.
- Solve complex problems by applying the knowledge acquired to areas that are different to the original ones.
- Use appropriate numerical methods to solve specific problems.
Learning Outcomes
- Analyse, synthesise, organise and plan projects in the field of study.
- Apply logical/mathematical thinking: the analytic process that involves moving from general principles to particular cases, and the synthetic process that derives a general rule from different examples.
- Apply partial derivative equation techniques to predict the behaviour of certain phenomena.
- Apply specific methodologies, techniques and resources to conduct research and produce innovative results in the area of specialisation.
- Extract information from partial derivative models in order to interpret reality.
- Identify real phenomena as models of partial derivative equations.
- Isolate the main difficulty in a complex problem from other, less important issues.
- Present study results in English.
- Solve complex problems by applying the knowledge acquired to areas that are different to the original ones.
- Solve real problems by identifying them appropriately from the perspective of partial derivative equations.
- Use appropriate numerical methods to study phenomena modelled with partial derivative equations.
Content
PART I: PDE MODELS AND THEIR MAIN PROPERTIES
I.0. Introduction: Examples, different types of equations.
I.1. The heat equation. The solution formula for the pure initial value problem; the Gauss kernel. Solution by means of the Fourier method in the case of a bounded interval with Dirichlet or Neumann boundary conditions. Dissipative character of the heat equation. The parabolic maximum principle.
I.2. The wave equation. The solution formula for the pure initial value problem. Solution by means of the Fourier method in the case of a bounded interval with Dirichlet or Neumann boundary conditions. Conservative character of the wave equation.
I.3. Laplace's equation with Dirichlet or Neumann boundary conditions. Variational principle. The elliptic maximum principle. The Poisson kernel. Solution by means of the Fourier method in the case of a rectangle, a circle or a sphere.
I.4. Turing's “chemical basis of morphogenesis”.
I.5. Travelling-wave solutions of non-linear heat equations.
I.6. The traffic equation and scalar conservation laws. Shocks. Weak solutions. Rankine-Hugoniot and entropy conditions.
I.7. The Navier-Stokes equations.
PART II: NUMERICAL METHODS
II.1. Finite difference methods for scalar parabolic equations: Euler explicit, Euler implicit and Crank-Nicholson methods: Von Neumann stability test. Parabolic stability Courant–Friedrichs–Lewy condition. Examples.
II.2. Numerical methods for elliptic equations.
II.3. Numerical methods for scalar conservation laws: Finite difference methods in conservation form. Shock-capturing schemes. Monotone schemes: Lax-Friedrichs and upwind schemes. Convergence and stability conditions. Entropy-satisfying schemes. Examples.
Methodology
The objective of the classes of theory, problems and practices is to give to the students the most basic knowledge of the equations in partial derivatives
and their applications.
Annotation: Within the schedule set by the centre or degree programme, 15 minutes of one class will be reserved for students to evaluate their lecturers and their courses or modules through questionnaires.
Activities
| Title | Hours | ECTS | Learning Outcomes |
|---|---|---|---|
| Type: Directed | |||
| Classes of theory and problems | 30 | 1.2 | 5, 6, 10 |
| Type: Supervised | |||
| Internship classes | 8 | 0.32 | 11 |
| Type: Autonomous | |||
| Studies and practical work by the student. | 96 | 3.84 | 5, 6, 10 |
Assessment
The assessment will consist of two partial exams and the delivery of the resolution of a problem through the computer.
Assessment Activities
| Title | Weighting | Hours | ECTS | Learning Outcomes |
|---|---|---|---|---|
| First partial exam | 30% | 4 | 0.16 | 2, 1, 4, 3, 8, 7, 5, 6, 9, 10, 11 |
| Second partial exam | 30% | 4 | 0.16 | 10 |
| Solution of a problem with a computer | 40% | 8 | 0.32 | 2, 1, 4, 3, 8, 7, 5, 6, 9, 10 |
Bibliography
L.C. Evans, Partial differential equations, Graduate Studies in Mathematics 19 (2nd ed.), Providence, R.I., American Mathematical Society, (2010).
B. Gustafson, H-O. Kreiss and J. Oliger, Time dependent problems and Difference Methods, Wiley-Intersciences, (1996).
F. John, Partial Differential equations, vol. 1, Applied Math Sciences, Springer, (1978).
P.D. Lax, Hyperbolic systems of Conservation Laws and The Mathematical Theory of Shock Waves SIAM, 1973.
R.J. LeVeque, Finite Volume Methods for Hyperbolic problems, Cambridge University Press, 2002.
Y.Pinchover, J. Rubinstein, An Introduction to Partial Differential Equations, Cambridge 2005.
S. Salsa, Partial differential equations in action : from modelling to theory Springer, 2008.
G. Strang, Introduction to Applied Mathematics, Wellesley-Cambridge Press, (1986).
E.F. Toro, Riemann Solvers and Numerical Methods for Fluid Dynamics: A practical Introduction, Springer-Verlag, 2009.
G.B. Whitham Linear and nonlinear Waves, Wiley-Intersciences, (1999).
Software
We leave full freedom to students to use the language that suits them best to do the numerical exercises of this subject.