Course detail
Advanced Fluid Mechanics
FSI-LMT Acad. year: 2021/2022 Summer semester
The course is intended to deepen and widen students' theoretical knowledge of fluid mechanics. The basic laws for 2D and 3D fluid flow will be explained in a broader context. Students will learn about different kinds of fluid flow such as non-vortex and vortex flow of ideal fluid and turbulent flow. They will be provided with basic information about a shear boundary layer, i.e. about how it develops and how to model it. Finally the students will be made familiar with some integral methods used for solving of fluid flow. These methods are Method of Singularities for Thin Profiles, Vortex Element Methods.
Supervisor
Department
Learning outcomes of the course unit
Students will extend their theoretical knowledge of fluid flow in 2D and 3D. They will have an overview of some basic methods intended for fluid flow modelling. They will be able to analyze results of the CFD software.
Prerequisites
Basic knowledge of hydromechanics, i.e. basic equations of hydromechanics (Benoulli equation, mass conservation, Euler equations, Navier-Stokes equation, etc.), knowledge of one dimensional fluid flow in pipes. Basic knowledge of the differential, integral and vector calculus.
Planned learning activities and teaching methods
The course is taught through lectures explaining the basic principles and theory of the discipline. Exercises are focused on practical topics presented in lectures.
Assesment methods and criteria linked to learning outcomes
Course-unit credit is conditional on attendance at the exercises and completing given tasks. The exam has two parts. The first part is a test. The test consists of questions related to basic knowledge obtained in the lectures Second part is an oral exam.
Language of instruction
Czech
Aims
The aim of the course is to widen and deepen theoretical knowledge of fluid flow and present some possibilities how to solve fluid flow in hydraulic machines. To help students to be able analyse results of the CFD software. Another goal is to show some trends in research into theoretical hydraulics.
Specification of controlled education, way of implementation and compensation for absences
Attendance at seminars is controlled. Absence has to be compensated for via extra work.
The study programmes with the given course
Programme N-ETI-P: Power and Thermo-fluid Engineering, Master's
branch FLI: Fluid Engineering, 4 credits, compulsory
Type of course unit
Lecture
39 hours, optionally
Teacher / Lecturer
Syllabus
1. Mathematical introduction, Einstein summation convection, tensor calculus.
2. Methods of continuum descriptions, basic terms of fluid mechanic, path line, stream line, vortex filament, vortex tube. Stokes formula.
3. The fluid flow types, basic equations describing fluid flow.
4. Bernoulli equation, Lagrange integral.
5. 2D fluid flow, flow function defining, non-vortex flow, complex potential function. Simple flow patterns in 2D flow
6.-7. Principle of superposition. Calculation of fluid flow round a fixed and rotating cylinder. Conformal projection.
8. Simple flow patterns in the space. Parallel flow, source/sink, vortex filament, Biot-Sawart law.
9.-10 Flow induced by vortex walls, flow induced by vorticity continuously distributed in the space.
11. Boundary shear layer, basic terms, definition, thickness BSL, solution of laminar shear layer, shear layer separation.
12. Method of singularities applied on the fluid flow round the thin profiles.
13. Fluid flow solution through line of profiles.
Exercise
13 hours, compulsory
Teacher / Lecturer
Syllabus
1. Calculation with tensors. Practice of Einstein's convection.
2. Derivation of selected basic laws of fluid mechanics.
3. Conformal projection, Zukovsky's transformation.
4.-5. 2f Fluid flow around fixed and rotating cylinder analysis.
6. Models of the 2D vortex.
7.-9. Calculation of the induced velocity by the finite straight vortex filament.
10.-11. Derivation of velocity induced by plane and cylinder vortex walls.
12.-13. Laminar and turbulent mean velocity profile in straight tube derivation with using continuous vorticity distribution across tube.