Описание: This book explores the Energy Minimization Multi-scale (EMMS) theory and the drag model for heterogeneous gas-solid fluidized flows. The EMMS theory is improved with the cluster model and an accurate drag model is developed.
Описание: This book provides a common unifying framework for discrete-time stochastic systems corrupted with both independent random perturbations and with Markovian jumps. These subjects are typically covered independently.
Автор: Egon Stanewsky; J. Delery; John Fulker; Paolo de M Название: Drag Reduction by Shock and Boundary Layer Control ISBN: 3540433171 ISBN-13(EAN): 9783540433170 Издательство: Springer Рейтинг: Цена: 47377.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Describes the EU-supported project EUROSHOCK II concerned with the investigation of active shock and boundary layer control to improve aircraft performance. This book discusses basic experiments to improve and validate physical models relevant to the extension and application of various computational methods to airfoil and wing flows with control.
Автор: Egon Stanewsky; J. Delery; John Fulker; Paolo de M Название: Drag Reduction by Shock and Boundary Layer Control ISBN: 3642077625 ISBN-13(EAN): 9783642077623 Издательство: Springer Рейтинг: Цена: 47377.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Concerning aircraft efficiency - relevant to the present research - a reduction in aircraft drag of 10%, a reduction in aircraft fuel consumption of 30%, and a reduction in airframe, engine and system weight of 20% are envisaged.
Автор: Watanabe, Keizo Название: Drag Reduction of Complex Mixtures ISBN: 0128099208 ISBN-13(EAN): 9780128099209 Издательство: Elsevier Science Рейтинг: Цена: 22065.00 р. Наличие на складе: Поставка под заказ.
Описание: Drag Reduction of Complex Mixtures discusses the concept of drag reduction phenomena in complex mixtures in internal and external flows that are shown experimentally by dividing flow patterns into three categories. The book is intended to support further experiments or analysis in drag reduction. As accurately modeling flow behavior with drag reduction is always complex, and since drag reducing additives or solid particles are mixed in fluids, this book covers these complex phenomena in a concise, but comprehensive manner.
Автор: A. Gyr; H.-W. Bewersdorff Название: Drag Reduction of Turbulent Flows by Additives ISBN: 079233485X ISBN-13(EAN): 9780792334859 Издательство: Springer Рейтинг: Цена: 26122.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Drag Reduction of Turbulent Flows by Additives is the first treatment of the subject in book form. Fluid mechanical engineers, rheologists, those interested in energy saving methods, or in any other application in which the flow rate in turbulent flow should be increased.
Автор: A. Gyr; H.-W. Bewersdorff Название: Drag Reduction of Turbulent Flows by Additives ISBN: 9048145554 ISBN-13(EAN): 9789048145553 Издательство: Springer Рейтинг: Цена: 22201.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Drag Reduction of Turbulent Flows by Additives is the first treatment of the subject in book form. Fluid mechanical engineers, rheologists, those interested in energy saving methods, or in any other application in which the flow rate in turbulent flow should be increased.
Автор: Peter Thiede Название: Aerodynamic Drag Reduction Technologies ISBN: 364207541X ISBN-13(EAN): 9783642075414 Издательство: Springer Рейтинг: Цена: 39182.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This volume contains the proceedings of the CEASlDragNet European Drag Reduction Conference held on 19-21 June 2000 in Potsdam, Germany. This conference, succeeding the First and Second European Forum on Laminar Flow Technology 1992 and 1996 respectively, was initiated by the European Drag Reduction Network (DragNet) and organised by DGLR (Deutsche Gesellschaft fUr Luft- und Raumfahrt - Lilienthal Oberth e. V. ) under the auspices ofCEAS (Confederation of European Aerospace Societies). The development of aerodynamic drag reduction technologies is driven by predictions of remarkable fuel savings, promising substantial improvements not only of aircraft efficiency but also of environmental compatibility. However, considerable efforts on an European scale are needed in order to develop, qualifY and demonstrate the means for their practical realisation. The primary aim of this conference was to provide a comprehensive survey of the current status of research, development and application in all disciplines of aerodynamic drag re- duction including laminar flow technology, adaptive wing concepts, turbulence and se- paration control, induced drag reduction and supersonic flow aspects. Besides aerodynamic topics the Call for Papers addressed also interdisciplinary aspects of design & system inte- gration, structures, materials, manufacturing, operations and maintenance. The Programme Committee (PC), responsible for the scientific preparation of the conference, consisted of CEAS representatives and DragNet board members (see following page).
Описание: Tbe main purpose of this work was to find a way of placing a meaningful scientific payload within the upper atmosphere of Mars such that certain scientific measurements become possible. So the altitude range covered and the possible dweIl time are relevant design drivers and will be explored in greater detail within this thesis. Either concept of flying on Mars, however, be it heavier or lighter than air (read: heavier or lighter than carbon dioxide) is restricted to altitodes weil below 10 km. Since any sustained light at that altitode or higher in such a thin atmosphere is teehnically impractical, so is ascending to that altitode with - sounding rocket. Therefore - team of scientists from several research institutes around Europe fonned a scientific committec. Together with engineers and scientists from tbe Mars Society Germany and tbe University ofthe Federal Armed Forces of Germany in Munich (UBW) the committee drafted a reference scientific mission scenario 1] to: find ways to da exactly that: providing an instrument suite with access to a large altitu. de range and. meaningful dwell time (see 10. 3. 1 starting onp. ge 208). Tbc most practical approach was found in an inflatable entry vehicle that can provide the largest and lightest possible configuration. Since 00 such attempts have yet been m. ade, the work described herein focuses mostly on the mathematical thcory and the technical peculiarities of such a system, but also treats mission design and testing aspects. 1.
Описание: This thesis analyzes aerodynamic forces in viscous and compressible external flows. It is unique, as the force theories discussed apply to fully viscous and compressible Navier-Stokes external flows, allowing them to be readily combined with computational fluid dynamics to form a profound basis of modern aerodynamics. This thesis makes three fundamental contributions to theoretical aerodynamics, presenting: (1) a universal far-field zonal structure that determines how disturbance flow quantities decay dynamically to the state of rest at infinity; (2) a universal and exact total-force formula for steady flow and its far-field asymptotics; and (3) a general near-field theory for the detailed diagnosis of all physical constituents of aerodynamic force and moment.
Описание: This thesis analyzes aerodynamic forces in viscous and compressible external flows. It is unique, as the force theories discussed apply to fully viscous and compressible Navier-Stokes external flows, allowing them to be readily combined with computational fluid dynamics to form a profound basis of modern aerodynamics.
