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NAVIER-STOKES EQUATIONS: DEBUNKING THE MYTH
21/06/2022 | 12:00 - 20:00
Speaker: Dr. João C. C. Henriques, principal investigator at the Instituto de Engenharia Mecânica (IDMEC) and assistant professor at IST Lisboa.
Joao C.C. Henriques was born in Lisbon, Portugal, in 1969. He received the Diploma in Mechanical Engineering in 1993, the M.Sc. in Mechanical Engineering in 1996, and the Ph.D. in Mechanical Engineering in 2006, all from Instituto Superior Técnico (IST), Technical University of Lisbon (currently University of Lisbon). From 1993 to 2007, his main research topic was the development of numerical methods to simulate high-velocity compressible flow. Since 2008, his main research areas are numerical and experimental modeling of wave energy converters (WECs), control of the power take-off system of WECs and aerodynamic design of air turbines for oscillating water column WECs. He published 40 articles in peer-reviewed journals. He also holds five patents, four in the field of wave energy and one in wind energy. He participated in eight European projects in the area of wave energy. He is currently Principal Investigator at the Instituto de Engenharia Mecânica (IDMEC) and Assistant Professor at IST.
Its objective is to show the student in a friendly way the mathematical formulation behind the Navier Stokes equations, using simple mathematical tools, explaining dimensional analysis as a basic design tool in marine renewable energies and finally presenting the main types of marine turbines for OWC applications, explaining its basic aerodynamics.
The activity consists of three presentations that address the following topics:
1) “Navier-Stokes Equations: Debunking the Myth” (2.5h) – Most fluid mechanics textbooks derive the Navier-Stokes equations using a complex and non-general formulation. The idea is to derive and explain each term of the equations that describe fluid motion (mass, momentum, and energy balances) from a physical perspective using only undergraduate math.
2) “Simplifying Complexity Using Dimensional Analysis” (2h) – The presentation explains how to apply Dimensional Analysis to model and understand engineering problems related to renewable energies.
3) “The Aerodynamics of Air Turbines for OWC” (1.5h) – Presentation describes the main types of turbines for oscillating water column wave energy converters. The starting point is the theory of lift (from a physical perspective) to explain how aerodynamics affect air turbine performance and PTO control.
12: 00-14: 30 – Dr. Joao Henriques, Navier-Stokes Equations: Debunking the Myth.
14: 30-16: 00 –Break
16: 00-18: 00 – Dr. Joao Henriques, Simplifying Complexity Using Dimensional Analysis.
18: 00-18: 30 –Break
18: 30-20: 00 – Dr. Joao Henriques, The Aerodynamics of Air Turbines for OWC.