Jorge Barata
Full Professor (retired)
Director - R&D Unit AEROG - Aeronautics and Astronautics Research Center of LAETA – Associated Laboratory in Energy, Transports and Aeronautics
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ID’s: 0000-0001-9014-5008 (ORCID), 11439470600 (Scopus), C-6766-2008 (ResearcheriD)
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Director - R&D Unit AEROG - Aeronautics and Astronautics Research Center of LAETA – Associated Laboratory in Energy, Transports and Aeronautics
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Invited positions and distinctions: Fellow, Royal Aeronautical Society; Associate Fellow, AIAA-American Institute of Aeronautics and Astronautics, Reston, VA; Senior Member, OE-Ordem dos Engenheiros, Lisbon; Aeronautical Engineering Specialist, OE; Certification of Appreciation, SAE Aerospace, Reston, VA
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University Teaching: 43+ years, Propulsion, Aerodynamics, Heat and Mass Transfer, Combustion
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Supervision (73): 2 Post-doctoral scholars, 11 PhDs, 14 Master dissertations, 1 Program of scientific aptitude and teaching skills, 2 Undergraduate seminars, 18 Final-year projects, 7 Internships, 18 Grants (2 Post Doc, 11 PhD, 14 MEng, 2 Science and Technology Management, and others)
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Publications: 300+ publications, including 60+ articles in books or journals, 200+ in international conferences, 14 educational monographs, 6 lecture notes, 8 books, and 30+ other communications in seminars, colloquia and lectures
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Academic/Scientific service: 20+ positions (appointed or elected)
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Professional Membership: RAeS-Royal Aeronautical Society, AIAA-American Institute of Aeronautics and Astronautics (36+ years), SAE-American Society of Automotive Engineers (29+ years), 3AF-Association Aéronautique Astronautique de France, SPEE-Sociedade Portuguesa para a Educação em Engenharia (Founder).
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Editor / Member of Journals Editorial Board: 8
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Funding applications / approved: 44 / 23
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Government / Public Service: 11 positions (appointed or elected)
MY RESEARCH
Turbulent jets impinging on flat surfaces through a low-velocity crossflow are typical of impingement cooling applications in industry, as well as of the flow beneath a short/vertical take-off aircraft which is lifting off or landing with zero or small forward momentum. Ground effect phenomena may occur and change the lift forces on the aircraft, cause reingestion of exhaust gases into the engine intake and raise fuselage skin temperatures. In this latter application the impingement of each downward-directed jet on the ground results in the formation of a wall jet which flows radially from the impinging point along the ground surface. The interaction of this wall jet with the free stream results in the formation of a ground vortex far upstream of the impinging jet, which has profound implications on the aircraft design. If there are two or more adjacent jets, the resulting wall jets meet, and a fan-shaped upwash, or “fountain”, is normally formed between the jets. The fountain upwash flow depending on its strength and direction affects the forces and moments induced in the aircraft when operating in ground effect. The resulting ground vortex shape is strongly affected and the corresponding induced suckdown effect tends to be reduced by the upload produced by the fountain. Improved knowledge of impinging jet flows are therefore necessary to control these effects and to be able to model a range of jet-impingement type of applications with practical interest.
The increasing interest on Unmanned Air Vehicles (UAV’s) and their several utilities blended with the need of easy carrying and also the stealth, lead to the need to create the concept of Micro Air Vehicles (MAV’s) and the Nano Air Vehicles (NAV’s). Their similar general sizes and weights as natural flyers has generated a renewed interest in flapping wings flight.
