EN AYANT COMME BUT L'APPLICATION D'UNE METHODE D'OPTIMISATION FIABLE AVEC UN COUT DE CALCUL RAISONNABLE EN ECOULEMENT POTENTIEL, ON PROCEDE DANS CE TRAVAIL PAR LES ETAPES SUIVANTES: 1) COMPARAISON DE CERTAINS ALGORITHMES D'OPTIMISATION QUI NECESSITENT OU PAS LE CALCUL DU GRADIENT DE LA FONCTION COUT. ON RECOMMANDE L'UTILISATION DE GMRES NON LINEAIRE POUR RESOUDRE LES CONDITIONS D'OPTIMALITE (GRAD-GMRES), CAR C'EST UNE METHODE RAPIDE ET ROBUSTE DE RESOLUTION. 2) APPLICATION DE GRAD-GMRES DANS L'OPTIMISATION DE FORME DE PROFIL D'AILE D'AVION EN ECOULEMENT POTENTIEL SUBSONIQUE AFIN D'ATTEINDRE UNE CERTAINE DISTRIBUTION DE PRESSION SUR SA SURFACE. ON CALCULE LE GRADIENT DE LA FONCTION-COUT PAR UN ETAT ADJOINT (CALCUL EXACT DU GRADIENT). 3) APPLICATION DE LA MEME METHODE DANS L'OPTIMISATION DE FORME DE PROFIL D'AIDE D'AVION EN ECOULEMENT POTENTIEL TRANSSONIQUE AVEC UN CALCUL EXACT DU GRADIENT DE LA FONCTION-COUT. ON A COMME OBJECTIF SOIT D'ATTEINDRE UNE CERTAINE DISTRIBUTION DE PRESSION SUR LE PROFIL, SOIT DE REDUIRE LA TRAINEE DUE AU CHOC

A brand-new edition of the classic guide on low-speed wind tunnel testing While great advances in theoretical and computational methods have been made in recent years, low-speed wind tunnel testing remains essential for obtaining the full range of data needed to guide detailed design decisions for many practical engineering problems. This long-awaited Third Edition of William H. Rae, Jr.'s landmark reference brings together essential information on all aspects of low-speed wind tunnel design, analysis, testing, and instrumentation in one easy-to-use resource. Written by authors who are among the most respected wind tunnel engineers in the world, this edition has been updated to address current topics and applications, and includes coverage of digital electronics, new instrumentation, video and photographic methods, pressure-sensitive paint, and liquid crystal-based measurement methods. The book is organized for quick access to topics of interest, and examines basic test techniques and objectives of modeling and testing aircraft designs in low-speed wind tunnels, as well as applications to fluid motion analysis, automobiles, marine vessels, buildings, bridges, and other structures subject to wind loading. Supplemented with real-world examples throughout, Low-Speed Wind Tunnel Testing, Third Edition is an indispensable resource for aerospace engineering students and professionals, engineers and researchers in the automotive industries, wind tunnel designers, architects, and others who need to get the most from low-speed wind tunnel technology and experiments in their work.

Traces the development of fighter design from World War One to the present day. Covers aerodynamics, stability and control, propulsion, structures and materials, avoinics, armaments and tactics. The drawings and charts make this an informative book for enthusiasts and those with a professional interest in aircraft design.

Report presents a series of analyses and recommendations for fostering the role of culture for sustainable development. Drawing on a global survey implemented with nine regional partners and insights from scholars, NGOs and urban thinkers, the report offers a global overview of urban heritage safeguarding, conservation and management, as well as the promotion of cultural and creative industries, highlighting their role as resources for sustainable urban development. Report is intended as a policy framework document to support governments in the implementation of the 2030 Agenda for Sustainable Urban Development and the New Urban Agenda.

Repackaged with a new afterword, this "valuable and entertaining" (New York Times Book Review) book explores how scientists are adapting nature's best ideas to solve tough 21st century problems. Biomimicry is rapidly transforming life on earth. Biomimics study nature's most successful ideas over the past 3.5 million years, and adapt them for human use. The results are revolutionizing how materials are invented and how we compute, heal ourselves, repair the environment, and feed the world. Janine Benyus takes readers into the lab and in the field with maverick thinkers as they: discover miracle drugs by watching what chimps eat when they're sick; learn how to create by watching spiders weave fibers; harness energy by examining how a leaf converts sunlight into fuel in trillionths of a second; and many more examples. Composed of stories of vision and invention, personalities and pipe dreams, Biomimicry is must reading for anyone interested in the shape of our future.