Download or read book Stabilit et transition en coulement tridimensionnel written by Éric Coustols and published by . This book was released on 1983 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rappel de la théorie de l'instabilité linéaire. Calcul de la couche limite laminaire sur une aile en flèche infinie. Critères de transition sur une aile en flèche infinie. Recherche de critères améliorés pour la détermination de la transition sur des ailes en flèche. Calcul de la region de transition par la méthode dite d'intermittence.
Download or read book Theory and Computation of Hydrodynamic Stability written by W. O. Criminale and published by Cambridge University Press. This book was released on 2003-10-23 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of hydrodynamic stability is fundamental to many subjects, ranging from geophysics and meteorology through to engineering design. This treatise covers both classical and modern aspects of the subject, systematically developing it from the simplest physical problems, then progressing chapter by chapter to the most complex, considering linear and nonlinear situations, and analysing temporal and spatial stability. The authors examine each problem both analytically and numerically: many chapters end with an appendix outlining relevant numerical techniques. All relevant fluid flows are treated, including those where the fluid may be compressible, or those from geophysics, or those that require salient geometries for description. Details of initial-value problems are explored equally with those of stability. As a result, the early transient period as well as the asymptotic fate for perturbations for a flow can be assessed. The text is enriched with many exercises, copious illustrations and an extensive bibliography and the result is a book that can be used with courses on hydrodynamic stability or as an authoritative reference for researchers.
Download or read book Special Course on Skin Friction Drag Reduction written by and published by . This book was released on 1992 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book La Recherche A rospatiale written by and published by . This book was released on 1994 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book AGARD Report written by and published by . This book was released on 1987 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Numerical Simulation of the Transonic DFVLR F5 Wing Experiment written by Wilhelm Kordulla and published by . This book was released on 1988 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Special Course on Subsonic transonic Aerodynamic Interference for Aicraft written by and published by . This book was released on 1983 with total page 1204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 93 3035 93 3069 written by and published by . This book was released on 1993 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Calculs de stabilit et transition sur des configurations hypersoniques complexes written by Laurent Dussillols and published by . This book was released on 1999 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les travaux présentés dans cette thèse traitent de la transition laminaire-turbulent de la couche limite hypersonique, sans effet de gaz réels, en écoulement tridimensionnel. Au préalable, nous avons comparé les différences entre la théorie d'Orr-Sommerfeld et l'approche non locale (PSE) sur un cône sans incidence, et montré que les effets non parallèles sont d'autant plus importants que les ondes d'instabilité sont obliques. La méthode eN, couplée à l'approche locale, a été largement exploitée afin de comprendre les mécanismes responsables de la transition à grand nombre de Mach. Ainsi, sur deux configurations tridimensionnelles principales (cône et aile delta, avec ou sans incidence), les confrontations antre les résultats numériques et les expériences réalisées en soufflerie amènent à dire que ce sont différentstypes d'instabilité qui pilotent la transition sur une même géométrie. Dans le cas du cône avec incidence, où les calculs ont été effectués en tenant compte de la courbure des lignes de courant, les ondes instables du premier mode - dont la direction de propagation fait un angle d'environ 60° avec l'écoulement extérieur - peuvent, au voisinage des génératrices supérieure et inférieure, être tenues pour responsables du changement de régime de la couche limite laminaire. Entre ces deux génératrices, c'est une instabilité dite "mixte" (un mélange du premier mode et de l'instabilité transversale, engendrée par le caractère tridimensionnel de l'écoulement) qui provoque certainement l'apparition de la turbulence. Les expériences menées sur l'aile delta ont démontré que l'émoussement du bord d'attaque et l'incidence provoquaient una avncée de la ligne de transition par rapport au cas "bord d'attaque aigü sans incidence". Les calculs de stabilité et l'utilisation de la méthode eN ont été plus délicats à mener que dans le cas du cône, mais les résultats obtenus sont encourageants et les corrélations numérique / expérience sont assez bonnes. Il y a création d'une forte instabilité transversale lorsque le bord d'attaque est émoussé, et cette dernière devient responsable de la transition, alors que dans les cas sans émoussement et avec incidence, c'est l'instabilité "mixte" (comme sur le cône) qui déclenche le changement de régime de la couche limite.
Download or read book Guides to Aerospace Research and Development in NATO Countries written by Heinrich Behrens and published by . This book was released on 1983 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wind Tunnels and Testing Techniques written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and published by . This book was released on 1984 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Paper written by and published by . This book was released on 1992 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Missions and Vehicle Concepts for Modern Propelled Lighter than air Vehicles written by Mark D. Ardema and published by . This book was released on 1985 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laminar Turbulent Transition written by D. Arnal and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of laminar-turbulent transition is of considerable practical importance and has a wide range of engineering applications. For this reason, the International Union of Applied Mechanics decided to sponsor a third Symposium on "Laminar-Turbulent Transition", which would be organised by the ONERA Toulouse Research Center and held at "Ecole Nationale Superieure de l'Aeronautique et de l'Espace" in 1989. It was supposed that like the two previous IUTAM Symposia (Stuttgart 1979 and Novosibirsk 1984) the symposium would be devoted to experimental of laminar-turbulent transition In fluids, i.e. the and theoretical studies physical problem of transition and mathematical modelling in shear flows. The contributed papers were selected by the Scientific Committee from extended abstracts. The larger number of highly qualified papers submitted for presentation led us to include in the program poster sessions, which could be held during morning, lunch and afternoon breaks, and to take the decision that the symposium should last five days (from Monday 11 to Friday 15 September). An excursion on Wednesday offering a well deserved rest and the occasion of new personal exchanges between the participants seems to have been appreciated by all. The symposium consisted of 8 invited lectures and 62 contributed pa pers presented either on oral or poster sessions.
Download or read book New Results in Numerical and Experimental Fluid Mechanics IV written by Christian Breitsamter and published by Springer Science & Business Media. This book was released on 2012-08-13 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains 59 papers presented at the 13th Symposium of STAB (German Aerospace Aerodynamics Association). In this association, all those German scientists and engineers from universities, research establishments and industry are involved who are doing research and project work in numerical and experimental fluid mechanics and aerodynamics, mainly for aerospace but also in other applications. Many of the contributions give results from federal and European-Union sponsored projects. The volume gives a broad overview of the ongoing work in this field in Germany. Covered are flow problems of high and low aspect-ratio wings and bluff bodies, laminar flow control and transition, hypersonic flows, transition and fluid mechanical modelling, LES and DNS, numerical simulation, aeroelasticity, measuring techniques and propulsion flows.
Download or read book 93 3103 93 3140 written by and published by . This book was released on 1993 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bu Lteni written by Istanbul Teknik U niversitesi and published by . This book was released on 1987 with total page 906 pages. Available in PDF, EPUB and Kindle. Book excerpt:
