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Download Control Of Supersonic Axisymmetric Base Flows Using Passive Splitter Plates And Pulsed Plasma Actuators full books in PDF, epub, and Kindle. Read online Control Of Supersonic Axisymmetric Base Flows Using Passive Splitter Plates And Pulsed Plasma Actuators ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Download or read book Control of Supersonic Axisymmetric Base Flows Using Passive Splitter Plates and Pulsed Plasma Actuators written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 116 pages
Book Rating : 4.:/5 (742 download)
Download or read book Passive and Active Control of Supersonic Axisymmetric Base Flows: Direct Numerical Simulations and Large-Eddy Simulations written by and published by . This book was released on 2002 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new compressible Navier-Stokes code in cylindrical coordinates was developed for investigating axisymmetric wakes of bluff-based bodies in supersonic flows. In this code, high-order compact finite differences derived for non-equidistant grids are employed and a new stare-of-the-art axis treatment is incorporated. Additionally, the fully three-dimensional transport equations for turbulent kinetic energy and turbulent dissipation are implemented to enable (steady or unsteady) Reynolds Averaged Navier Stokes (RANS) simulations. Furthermore, a new "Flow Simulation Methodology" (FSM) was developed for computing complex compressible flows. The centerpiece of FSM) is a strategy to provide the proper amount of modeling of the subgrid scales. This is accomplished by a "contribution function" which locally and instantaneously compares the smallest relevant scales to the local grid size. The contribution function is designed such that it provides no modeling if the computation is locally well resolved so that the computation approaches a Direct Numerical Simulation (DNS) in the fine grid limit, or provides modeling of all scales in the coarse grid limit and thus approaches an unsteady PANS (URANS) calculation. In between these resolution limits, the contribution function adjusts the necessary modeling for the unresolved scales while the larger (resolved) scales are computed as in traditional Large Eddy Simulations (LES) . Preliminary results have shown that the new high- order code has great advantages for supersonic base flow simulations and that calculations, in particular together with FSM), will allow simulations of supersonic base flows at much higher Reynolds numbers than possible with conventional LES.
Download or read book חדושי הר"ן written by and published by . This book was released on 1823 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Shankar Mahadevan
Publisher :
ISBN 13 :
Total Pages : 150 pages
Book Rating : 4.:/5 (928 download)
Download or read book Simulation of Supersonic Flow Phenomena in the Presence of Direct-current Surface Plasma Actuators written by Shankar Mahadevan and published by . This book was released on 2006 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: A computational study of the effects of surface direct-current glow discharge actuation on supersonic flows is presented. A Navier-Stokes solver is used to compute the supersonic flow and the plasma actuators are modeled using a phenomenological approach. The actuator of interest consists of two electrodes flush-mounted on a flat plate. In the absence of external magnetic fields, the principal actuation mechanisms are electrostatic forcing and volumetric gas heating. The Navier-Stokes solver uses finite-volume spatial discretization and is based on an unstructured grid framework. A dual-time stepping algorithm is used to generate time-dependent solutions. The plasma actuator model comprises a separate electrostatic forcing model and a volumetric heating model to represent the effect of the plasma on the flow. The electrostatic forcing model is based on Child's law for a collisional cathode sheath and the volumetric heating effect is modeled using an asymmetric Gaussian distribution. Two modes of the glow discharge are studied using the actuator model in the presence of supersonic flow: a low-power (diffuse) mode and a high-power (constricted0) mode. The effects of electrostatic forcing and volumetric gas heating are examined individually and in combination using surface and field plots of pressure and temperature. Results from computations indicate that the diffuse mode discharge results in a stronger perturbation to the flow compared to the constricted mode discharge, which is mainly attributed to the volumetric heating of the bulk flow. The effects of the position of the electrodes relative to the bulk supersonic flow (cathode upstream and cathode downstream) are studied using sensitivity parameters in the electrostatic forcing model. The results show that electrostatic forcing, despite being small in magnitude, plays a significant role in the flow actuation. The effect of inter-actuator distances and coupled effects between two actuators placed in series are also studied. The magnitude of the surface pressure rise increases as the inter-actuator distance is made smaller.
Download or read book Active Control of Supersonic Boundary Layers Using Electric Arc Plasma Actuators written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Rudibert King
Publisher : Springer Science & Business Media
ISBN 13 : 3540714391
Total Pages : 441 pages
Book Rating : 4.5/5 (47 download)
Download or read book Active Flow Control written by Rudibert King and published by Springer Science & Business Media. This book was released on 2007-08-29 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains contributions presented at the Active Flow Control 2006 conference, held September 2006, at the Technische Universität Berlin, Germany. It contains a well balanced combination of theoretical and experimental state-of-the-art results of Active Flow Control. Coverage combines new developments in actuator technology, sensing, robust and optimal open- and closed-loop control and model reduction for control.
Author : Ethirajan Rathakrishnan
Publisher : John Wiley & Sons
ISBN 13 : 0470825766
Total Pages : 663 pages
Book Rating : 4.4/5 (78 download)
Download or read book Applied Gas Dynamics written by Ethirajan Rathakrishnan and published by John Wiley & Sons. This book was released on 2010-10-04 with total page 663 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Applied Gas Dynamics, Professor Ethirajan Rathakrishnan introduces the high-tech science of gas dynamics, from a definition of the subject to the three essential processes of this science, namely, the isentropic process, shock and expansion process, and Fanno and Rayleigh flows. The material is presented in such a manner that beginners can follow the subject comfortably. Rathakrishnan also covers the theoretical and application aspects of high-speed flows in which enthalpy change becomes significant. Covers both theory and applications Explains involved aspects of flow processes in detail Provides a large number of worked through examples in all chapters Reinforces learning with concise summaries at the end of every chapter Contains a liberal number of exercise problems with answers Discusses ram jet and jet theory -- unique topics of use to all working in the field Classroom tested at introductory and advanced levels Solutions manual and lecture slides available for instructors Applied Gas Dynamics is aimed at graduate students and advanced undergraduates in Aerospace Engineering and Mechanical Engineering who are taking courses such as Gas Dynamics, Compressible Flows, High-Speed Aerodynamics, Applied Gas Dynamics, Experimental Aerodynamics and High-Enthalpy Flows. Practicing engineers and researchers working with high speed flows will also find this book helpful. Lecture materials for instructors available at http://www.wiley.com/go/gasdyn
Author : Holger Babinsky
Publisher : Cambridge University Press
ISBN 13 : 1139498649
Total Pages : 481 pages
Book Rating : 4.1/5 (394 download)
Download or read book Shock Wave-Boundary-Layer Interactions written by Holger Babinsky and published by Cambridge University Press. This book was released on 2011-09-12 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shock wave-boundary-layer interaction (SBLI) is a fundamental phenomenon in gas dynamics that is observed in many practical situations, ranging from transonic aircraft wings to hypersonic vehicles and engines. SBLIs have the potential to pose serious problems in a flowfield; hence they often prove to be a critical - or even design limiting - issue for many aerospace applications. This is the first book devoted solely to a comprehensive, state-of-the-art explanation of this phenomenon. It includes a description of the basic fluid mechanics of SBLIs plus contributions from leading international experts who share their insight into their physics and the impact they have in practical flow situations. This book is for practitioners and graduate students in aerodynamics who wish to familiarize themselves with all aspects of SBLI flows. It is a valuable resource for specialists because it compiles experimental, computational and theoretical knowledge in one place.
Author : Ning Qin
Publisher : Springer Nature
ISBN 13 : 3030296881
Total Pages : 341 pages
Book Rating : 4.0/5 (32 download)
Download or read book Advances in Effective Flow Separation Control for Aircraft Drag Reduction written by Ning Qin and published by Springer Nature. This book was released on 2019-10-17 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the results of a European-Chinese collaborative research project, Manipulation of Reynolds Stress for Separation Control and Drag Reduction (MARS), including an analysis and discussion of the effects of a number of active flow control devices on the discrete dynamic components of the turbulent shear layers and Reynolds stress. From an application point of view, it provides a positive and necessary step to control individual structures that are larger in scale and lower in frequency compared to the richness of the temporal and spatial scales in turbulent separated flows.
Author :
Publisher :
ISBN 13 :
Total Pages : 992 pages
Book Rating : 4.F/5 ( download)
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1993 with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jose Manuel Vega
Publisher : Academic Press
ISBN 13 : 0128227664
Total Pages : 322 pages
Book Rating : 4.1/5 (282 download)
Download or read book Higher Order Dynamic Mode Decomposition and Its Applications written by Jose Manuel Vega and published by Academic Press. This book was released on 2020-09-22 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Higher Order Dynamic Mode Decomposition and Its Applications provides detailed background theory, as well as several fully explained applications from a range of industrial contexts to help readers understand and use this innovative algorithm. Data-driven modelling of complex systems is a rapidly evolving field, which has applications in domains including engineering, medical, biological, and physical sciences, where it is providing ground-breaking insights into complex systems that exhibit rich multi-scale phenomena in both time and space. Starting with an introductory summary of established order reduction techniques like POD, DEIM, Koopman, and DMD, this book proceeds to provide a detailed explanation of higher order DMD, and to explain its advantages over other methods. Technical details of how the HODMD can be applied to a range of industrial problems will help the reader decide how to use the method in the most appropriate way, along with example MATLAB codes and advice on how to analyse and present results. Includes instructions for the implementation of the HODMD, MATLAB codes, and extended discussions of the algorithm Includes descriptions of other order reduction techniques, and compares their strengths and weaknesses Provides examples of applications involving complex flow fields, in contexts including aerospace engineering, geophysical flows, and wind turbine design
Author :
Publisher :
ISBN 13 : 9781538621066
Total Pages : pages
Book Rating : 4.6/5 (21 download)
Download or read book ICETAS 2017 written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael Wang
Publisher : BoD – Books on Demand
ISBN 13 : 1789842611
Total Pages : 226 pages
Book Rating : 4.7/5 (898 download)
Download or read book Optical Coherence Tomography and Its Non-medical Applications written by Michael Wang and published by BoD – Books on Demand. This book was released on 2020-05-27 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical coherence tomography (OCT) is a promising non-invasive non-contact 3D imaging technique that can be used to evaluate and inspect material surfaces, multilayer polymer films, fiber coils, and coatings. OCT can be used for the examination of cultural heritage objects and 3D imaging of microstructures. With subsurface 3D fingerprint imaging capability, OCT could be a valuable tool for enhancing security in biometric applications. OCT can also be used for the evaluation of fastener flushness for improving aerodynamic performance of high-speed aircraft. More and more OCT non-medical applications are emerging. In this book, we present some recent advancements in OCT technology and non-medical applications.
Author : A. G. Panaras
Publisher : AIAA (American Institute of Aeronautics & Astronautics)
ISBN 13 : 9781600869167
Total Pages : 0 pages
Book Rating : 4.8/5 (691 download)
Download or read book Aerodynamic Principles of Flight Vehicles written by A. G. Panaras and published by AIAA (American Institute of Aeronautics & Astronautics). This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In "Aerodynamic Principles of Flight Vehicles" Argyris Panaras examines the fundamentals of vortices and shock waves, aerodynamic estimation of lift and drag, airfoil theory, boundary layer control, and high-speed, high-temperature flow. Individual chapters address vortices in aerodynamics, transonic and supersonic flows, transonic/supersonic aircraft configurations, and high-supersonic/hypersonic flows, beginning with definitions and historical data, and then describing present-day status and current research challenges. Emphasis is given to flow control, to the evolution of flight vehicle shapes as flight speed has increased, and to discoveries that enabled breakthrough developments in flight. The book: examines why various equations and technologies were developed, explains major contributors in areas such as vortices and aircraft wakes, drag buildup, sonic boom, and shock wave-boundary layer interactions, among others, and helps readers apply concepts from the material to their own projects. Archival and encyclopedic, "Aerodynamic Principles of Flight Vehicles" is a superb reference for aeronautical students and professionals alike. Although most beneficial to readers with a working knowledge of aerodynamics, it is accessible to anyone with an introductory understanding of the field.
Author : Arthur H. Lefebvre
Publisher : CRC Press
ISBN 13 : 1420086057
Total Pages : 560 pages
Book Rating : 4.4/5 (2 download)
Download or read book Gas Turbine Combustion written by Arthur H. Lefebvre and published by CRC Press. This book was released on 2010-04-26 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reflecting the developments in gas turbine combustion technology that have occurred in the last decade, Gas Turbine Combustion: Alternative Fuels and Emissions, Third Edition provides an up-to-date design manual and research reference on the design, manufacture, and operation of gas turbine combustors in applications ranging from aeronautical to po
Author : H. S. Mukunda
Publisher :
ISBN 13 : 9789385909429
Total Pages : 0 pages
Book Rating : 4.9/5 (94 download)
Download or read book Understanding Aerospace Chemical Propulsion written by H. S. Mukunda and published by . This book was released on 2017-02-28 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores aeronautical and space chemical propulsion. The book provides an understanding of propulsion systems through illustrative description of the systems; analysis of modeled systems; examination of the performance of real systems in this light; and a comparative assessment of aeronautical and space propulsion system elements.
Author : Andreas Dillmann
Publisher : Springer
ISBN 13 : 3319201220
Total Pages : 416 pages
Book Rating : 4.3/5 (192 download)
Download or read book The Aerodynamics of Heavy Vehicles III written by Andreas Dillmann and published by Springer. This book was released on 2015-08-19 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains papers presented at the International conference “The Aerodynamics of Heavy Vehicles III: Trucks, Buses and Trains” held in Potsdam, Germany, September 12-17, 2010 by Engineering Conferences International (ECI). Leading scientists and engineers from industry, universities and research laboratories, including truck and high-speed train manufacturers and operators were brought together to discuss computer simulation and experimental techniques to be applied for the design of more efficient trucks, buses and high-speed trains in the future. This conference was the third in the series after Monterey-Pacific Groove in 2002 and Lake Tahoe in 2007.The presentations address different aspects of train aerodynamics (cross wind effects, underbody flow, tunnel aerodynamics and aeroacoustics, experimental techniques), truck aerodynamics (drag reduction, flow control, experimental and computational techniques) as well as computational fluid dynamics and bluff body, wake and jet flows.
