Fluid Mechanics

Good background in Physics and Mathematics

Theoretical classes exposing the contents of the curricular unit using wherever possible the presentation of examples within a Bioengineering context in all its branches and theoretical practices classes for solving problems of application. In theoretical practices classes, after a general discussion about the problems, students are encouraged to continue with its resolutions and at the end a discussion of the results is made. The problems proposed to solve in the theoretical practices classes are available to the students in advance.

The purpose of this course is to provide students with the fundamental knowledge of fluid mechanics and apply them to natural or engineered biological systems. The objectives to be achieved by students attending this course are: i) Understand the basic principles of fluid mechanics like viscosity, pressure, continuity equation, principle of conservation of energy, viscous dissipation and boundary layer; ii) Ability to apply fundamental principles to derive governing equations in fluid flow, namely Bernoulli equation; ii) Understand the flow of fluids through pipes and distinction between laminar and turbulent regimes; iv) Calculation of head losses in pipes and accidents for incompressible fluids; v) Selection of pumps.

1. Introduction to Fluid Mechanics

What is a fluid? Viscosity. Non-newtonian fluids. Surface tension.

2. Fluid Statics

Pressure at a point and pressure variation in a fluid at rest. Manometry: piezometric pipe, U pipe manometer and inclined pipe manometer. Buoyancy.

3. Fluid Dynamics

Flow patterns. The continuity equation. Bernoulli equation and examples of applications.

4. Flow in Pipes

Laminar and turbulent flow. The hydrodynamic entry length. Laminar flow in pipes. Turbulent flow in pipes. Pressure drop and head loss in pipes and accessories. The Moody chart. Piping systems with pumps and turbines.

5. Turbomachines

Classification and terminology. Pump performance curves. Pump cavitation and net positive suction head. Pump association in series and parallel.

• - exame - 100.0%

NAO

MASSEY B. S. (2002) Mecânica dos Fluidos, (tradução de J. R. Guedes de Carvalho do original inglês intitulado Mechanics of Fluids, 6ª edição) Fundação Calouste Gulbenkian. (disponível na biblioteca do ISEC 6A-1-66-12027; 6A-1-90-12128; 6A-1-91-12856)

MUNSON B. R., ROTHMAYER A. P., OKIISHI T. H. & HUEBSCH W. W. (2013) Fundamentals of Fluid Mechanics (7th edition) John Wiley & Sons. (disponível na biblioteca do ISEC 6A-1-113-18644)

ELGER D. F., LeBRET B. A., CROWE C. T. & ROBERSON J. A. (2016) Engineering Fluid Mechanics (11th Edition International Student Version) Singapore: Wiley. (disponível na biblioteca do ISEC 6A-1-114-18645)

ÇENGEL, Y. A. & CIMBALA J. M. (2008). Essentials of Fluid Mechanics: Fundamentals and Applications (Higher Education International edition) Boston: McGraw-Hill. (disponível na biblioteca do ISEC 6A-1-95-14418; 6A-1-95DVD V.-14418DVD)

ÇENGEL, Y. A. & CIMBALA J. M. (2007). Mecânica dos Fluidos: Fundamentos e Aplicações, São Paulo: McGraw-Hill. (Tradução de: Fluid Mechanics: Fundamentals and Applications). (disponível na biblioteca do ISEC 6A-1-97-14420)