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13 produkter
13 produkter
IUTAM Symposium on Unsteady Separated Flows and their Control
Proceedings of the IUTAM Symposium “Unsteady Separated Flows and their Control”, Corfu, Greece, 18-22 June 2007
Häftad, Engelska, 2009
1 068 kr
Skickas inom 10-15 vardagar
This Volume is the Proceedings of the IUTAM Symposium on Unsteady Separated Flows and Their Control held in Corfu, Greece, 18–22 June 2007. This was the second IUTAM Symposium on this subject, following the symposium in Toulouse, in April 2002. The Symposium consisted of single plenary sessions with invited lectures, - lected oral presentations, discussions on special topics and posters. The complete set of papers was provided to all participants at the meeting. The thematic sessions of this Symposium are presented in the following: Experimental techniques for the unsteady ow separation Theoretical aspects and analytical approaches of ow separation Instability and transition Compressibility effects related to unsteady separation Statistical and hybrid turbulence modelling for unsteady separated ows Direct and Large-Eddy Simulation of unsteady separated ows Theoretical/industrial aspects of unsteady separated ow control This IUTAM Symposium concerned an important domain of Theoretical and Applied Mechanics nowadays. It focused on the problem of ow separation and of its control. It achieved a uni ed approach regrouping the knowledge provided from theoretical, experimental, numerical simulation and modelling aspects for unsteady separated ows (incompressible and compressible regimes) and included ef cient control devices to achieve attenuation or suppression of separation. The subject - eas covered important themes in the domain of fundamental research as well as in the domain of applications.
3 066 kr
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This book reports on the latest knowledge concerning critical phenomena arising in fluid-structure interaction due to movement and/or deformation of bodies. The focus of the book is on reporting progress in understanding turbulence and flow control to improve aerodynamic / hydrodynamic performance by reducing drag, increasing lift or thrust and reducing noise under critical conditions that may result in massive separation, strong vortex dynamics, amplification of harmful instabilities (flutter, buffet), and flow -induced vibrations. Theory together with large-scale simulations and experiments have revealed new features of turbulent flow in the boundary layer over bodies and in thin shear layers immediately downstream of separation. New insights into turbulent flow interacting with actively deformable structures, leading to new ways of adapting and controlling the body shape and vibrations to respond to these critical conditions, are investigated. The book covers new featuresof turbulent flows in boundary layers over wings and in shear layers immediately downstream: studies of natural and artificially generated fluctuations; reduction of noise and drag; and electromechanical conversion topics. Smart actuators as well as how smart designs lead to considerable benefits compared with conventional methods are also extensively discussed. Based on contributions presented at the IUTAM Symposium “Critical Flow Dynamics involving Moving/Deformable Structures with Design applications”, held in June 18-22, 2018, in Santorini, Greece, the book provides readers with extensive information about current theories, methods and challenges in flow and turbulence control, and practical knowledge about how to use this information together with smart and bio-inspired design tools to improve aerodynamic and hydrodynamic design and safety.
3 066 kr
Skickas inom 10-15 vardagar
This book reports on the latest knowledge concerning critical phenomena arising in fluid-structure interaction due to movement and/or deformation of bodies. The focus of the book is on reporting progress in understanding turbulence and flow control to improve aerodynamic / hydrodynamic performance by reducing drag, increasing lift or thrust and reducing noise under critical conditions that may result in massive separation, strong vortex dynamics, amplification of harmful instabilities (flutter, buffet), and flow -induced vibrations. Theory together with large-scale simulations and experiments have revealed new features of turbulent flow in the boundary layer over bodies and in thin shear layers immediately downstream of separation. New insights into turbulent flow interacting with actively deformable structures, leading to new ways of adapting and controlling the body shape and vibrations to respond to these critical conditions, are investigated. The book covers new featuresof turbulent flows in boundary layers over wings and in shear layers immediately downstream: studies of natural and artificially generated fluctuations; reduction of noise and drag; and electromechanical conversion topics. Smart actuators as well as how smart designs lead to considerable benefits compared with conventional methods are also extensively discussed. Based on contributions presented at the IUTAM Symposium “Critical Flow Dynamics involving Moving/Deformable Structures with Design applications”, held in June 18-22, 2018, in Santorini, Greece, the book provides readers with extensive information about current theories, methods and challenges in flow and turbulence control, and practical knowledge about how to use this information together with smart and bio-inspired design tools to improve aerodynamic and hydrodynamic design and safety.
Smart Morphing and Sensing for Aeronautical Configurations
Prototypes, Experimental and Numerical Findings from the H2020 N° 723402 SMS EU Project
Inbunden, Engelska, 2023
1 810 kr
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This book reports on advanced strategies to design, modeling and testing morphing wings for aeronautical applications.
634 kr
Skickas inom 5-8 vardagar
Smart Morphing and Sensing for Aeronautical Configurations
Prototypes, Experimental and Numerical Findings from the H2020 N° 723402 SMS EU Project
Häftad, Engelska, 2024
1 810 kr
Skickas inom 10-15 vardagar
This book reports on advanced strategies to design, modeling and testing morphing wings for aeronautical applications.
2 128 kr
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This book addresses flow separationwithin the context of fluid-structure interaction phenomena. Here, newfindings from two research communities focusing on fluids and structures arebrought together, emphasizing the importance of a unified multidisciplinaryapproach. The book covers the theory, experimental findings, numericalsimulations, and modeling in fluid dynamics and structural mechanics for bothincompressible and compressible separated unsteady flows. There is a focus onthe morphing of lifting structures in order to increase their aerodynamicand/or hydrodynamic performances, to control separation and to reducenoise, as well as to inspire the design of novel structures. The differentchapters are based on contributions presented at the ERCOFTAC Symposium onUnsteady Separation in Fluid-Structure Interaction held in Mykonos, Greece,17-21 June, 2013 and include extended discussions and new highlights. Thebook is intended for students, researchers and practitioners in the broad fieldof computational fluid dynamics and computational structural mechanics. It aimsat supporting them while dealing with practical issues, such as developingcontrol strategies for unsteady separation and applying smart materials andbiomimetic approaches for design and control.
2 707 kr
Skickas inom 5-8 vardagar
This book addresses flow separationwithin the context of fluid-structure interaction phenomena. There is a focus onthe morphing of lifting structures in order to increase their aerodynamicand/or hydrodynamic performances, to control separation and to reducenoise, as well as to inspire the design of novel structures.
Computation and Comparison of Efficient Turbulence Models for Aeronautics — European Research Project ETMA
Häftad, Engelska, 2012
538 kr
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The computation of complex turbulent flows by statistical modelling has already a long history. The most popular two-equation models today were introduced in the early sev enties. However these models have been generally tested in rather academic cases. The develope ment of computers has led to more and more acurate numerical methods. The interactions betwe~n numerical and modelling techniques are generally not well mastered. Moreover, computation of real life cases, including 3D effects, complex geometries and pressure gra dients based on two-equation models with low-Reynolds treatment at the proximity of walls are not really of common use. A large number of models has been proposed; this is perhaps the sign that none of them is really satisfactory, and then the assessment of their generality is not an easy task: it requires a lot of understanding of the physics and a lot of work for testing the large number of relevant cases in order to assess their limits of validity which is a condition for an improved confidence in engineering applications. This is probably why workshops and working groups are frequent and the ETMA consor tium has choosen to build a state of the art in theoretical and numerical statistical turbu lence modelling for real life computations by taking some marks with respect to previous workshops such as the Stanford meetings (1980,1981); some problems are kept or updated by new experiments, some problems are discarded, some new problems are introduced; the focus is kept on flows with 2D geometries.
DESider – A European Effort on Hybrid RANS-LES Modelling
Results of the European-Union Funded Project, 2004 - 2007
Inbunden, Engelska, 2009
2 131 kr
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Preface “In aircraft design, efficiency is determined by the ability to accurately and rel- bly predict the occurrence of, and to model the development of, turbulent flows. Hence, the main objective in industrial computational fluid dynamics (CFD) is to increase the capabilities for an improved predictive accuracy for both complex flows and complex geometries”. This text part taken from Haase et al (2006), - scribing the results of the DESider predecessor project “FLOMANIA” is still - and will be in future valid. With an ever-increasing demand for faster, more reliable and cleaner aircraft, flight envelopes are necessarily shifted into areas of the flow regimes exhibiting highly unsteady and, for military aircraft, unstable flow behaviour. This undou- edly poses major new challenges in CFD; generally stated as an increased pred- tive accuracy whist retaining “affordable” computation times. Together with highly resolved meshes employing millions of nodes, numerical methods must have the inherent capability to predict unsteady flows. Although at present, (U)RANS methods are likely to remain as the workhorses in industry, the DESider project focussed on the development and combination of these approaches with LES methods in order to “bridge” the gap between the much more expensive (due to high Reynolds numbers in flight), but more accurate (full) LES.
DESider – A European Effort on Hybrid RANS-LES Modelling
Results of the European-Union Funded Project, 2004 - 2007
Häftad, Engelska, 2010
2 131 kr
Skickas inom 10-15 vardagar
Preface “In aircraft design, efficiency is determined by the ability to accurately and rel- bly predict the occurrence of, and to model the development of, turbulent flows. Hence, the main objective in industrial computational fluid dynamics (CFD) is to increase the capabilities for an improved predictive accuracy for both complex flows and complex geometries”. This text part taken from Haase et al (2006), - scribing the results of the DESider predecessor project “FLOMANIA” is still - and will be in future valid. With an ever-increasing demand for faster, more reliable and cleaner aircraft, flight envelopes are necessarily shifted into areas of the flow regimes exhibiting highly unsteady and, for military aircraft, unstable flow behaviour. This undou- edly poses major new challenges in CFD; generally stated as an increased pred- tive accuracy whist retaining “affordable” computation times. Together with highly resolved meshes employing millions of nodes, numerical methods must have the inherent capability to predict unsteady flows. Although at present, (U)RANS methods are likely to remain as the workhorses in industry, the DESider project focussed on the development and combination of these approaches with LES methods in order to “bridge” the gap between the much more expensive (due to high Reynolds numbers in flight), but more accurate (full) LES.
Fluid-Structure-Sound Interactions and Control
Proceedings of the 5th Symposium on Fluid-Structure-Sound Interactions and Control
Inbunden, Engelska, 2021
2 131 kr
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This book contains a thorough and unique record of recent advances in the important scientific fields fluid–structure interaction, acoustics and control of priority interest in the academic community and also in an industrial context regarding new engineering designs.
Fluid-Structure-Sound Interactions and Control
Proceedings of the 5th Symposium on Fluid-Structure-Sound Interactions and Control
Häftad, Engelska, 2022
2 131 kr
Skickas inom 10-15 vardagar
This book contains a thorough and unique record of recent advances in the important scientific fields fluid–structure interaction, acoustics and control of priority interest in the academic community and also in an industrial context regarding new engineering designs.