Fluid Mechanics I

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Objectives

The course complements the Fluid Mechanics I, and has for goal to provide the students with fundamental physical aspects associated to fluid flows occurring at high Reynolds numbers. This includes the boundary layer flows, and fully developed turbulence, particularly in wall bounded flows. The course includes also an introduction to unidimensional and adiabatic compressible flows.

Program

Flows at moderate Reynolds numbers: Flow around a circular cylinder; Characteristics of high Reynolds number flows: inviscid main flows: Euler equations; Boundary layers: Blasius flow over a flat plate, displacement thickness, VonKármán momentum integral, Von-Kármán-Pohlhausen approximate method, Falkner-Skan similarity solutions, Boundary layer separation, Axisymmetric boundary layers, Far wake of nonlifting bodies, free shear layers, unsteady boundary layers; Turbulent flows: characteristics of turbulent flows, Reynolds stresses, turbulent kinetic energy,
Energy cascade, Wall turbulence: channel flow analysis, channel and pipe flow experiments: fluctuations, turbulent structures, free turbulence; Steady compressible flow: compressible Couette flow: adiabatic wall. speed of sound.
Water hammer.

Teaching Methodologies

Computational work (25%), experimental work (25%), exam (50%).

Bibliography

Mecânica dos Fluidos II: Introdução à fenomenologia e modelação de escoamentos turbulentos, Carlos B. da Silva,
2014, Secção de Folhas, IST; "Fluid Mechanics", F.M. White, 2016, 8th edition, McGraw-Hill; "Incompressible Flow",
Ronald L. Panton, 2013, 4th edition, Wiley

Code

01100891

ECTS Credits

6

Classes

  • Práticas e Laboratórios - 21 hours
  • Teóricas - 28 hours

Evaluation Methodology

  • Computational work: 25%
  • Exam: 50%
  • experimental work: 25%