Author: Adam John Culler
Publisher:
ISBN:
Category :
Languages : en
Pages : 297
Get Book Here
Book Description
Abstract: This dissertation describes coupled fluid-thermal-structural modeling and analysis of a semi-infinite insulated metallic panel and a blade-stiffened carbon-carbon skin panel for aerothermoelasticity and forced response prediction in hypersonic flow.
Author: Fang Chen
Publisher:
ISBN:
Category : Technology
Languages : en
Pages :
Get Book Here
Book Description
To efficiently model fluid-thermal-structural problems for thermal protection design of hypersonic vehicles, a framework of Hypersonic Computational Coupling Dynamics (HyCCD) software integrates an independently developed program solving hypersonic aerthermodynamic simulation with a finite element analysis professional software. With the mathematical and physical description of multi-physics coupling mechanism, the corresponding efficient coupling strategies were proposed. Some representative coupling problems encountered in hypersonic vehicle were systematically analyzed to study the intrinsic fluid-thermal-structural coupling characteristics and mechanisms. The results can theoretically and technically support the studies on comprehensive performance assessment and optimization of thermal protection system and static or dynamic aerothermoelastic problem of hypersonic vehicles.
Author: Ramesh K. Agarwal
Publisher: BoD – Books on Demand
ISBN: 9535139037
Category : Technology & Engineering
Languages : en
Pages : 186
Get Book Here
Book Description
The book describes the recent progress in some hypersonic technologies such as the aerodynamic modeling and numerical simulations of rarefied flows, boundary layer receptivity, coupled aerodynamics, and heat transfer problems, including fluid-thermal-structure interactions and launcher aerodynamic design as well as other miscellaneous topics, such as porous ceramic composite phase change control system and vehicle profile, following LQR design. Both the researchers and the students should find the material useful in their work.
Author: Carlos Vargas Venegas
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Get Book Here
Book Description
Although considerable advancements have been made during the past several decades in hypersonic vehicle technologies, there are still numerous unresolved experimental and computational challenges that limit practical and affordable hypersonic flight. One of the main challenges is associated to the accurate and robust computational modeling of the flow surrounding the hypersonic vehicle. The prediction of aerothermal loads over a hypersonic structure during sustained atmospheric flight is critical for the design, analysis and optimization of structures for this class of vehicles. Due to the high-energy physics encountered at hypersonic speeds, the computational modeling and coupling of structural dynamics, heat transfer, and hypersonic aerothermodynamics, viz. aerothermoelasticity (ATE), becomes a challenging phenomenon to resolve computationally. Reduced-order models (ROMs) and surrogates are typical approaches to reducing the computational cost of hypersonic aerothermoelasticity simulations to a tractable level, while maintaining a desirable level of accuracy. While ROMs tend to accelerate predictions by several orders of magnitude, they still suffer from limitations that prohibit their practical use in real-world applications. In this thesis, a new physics-infused reduced-order modeling (PIROM) methodology is presented which leverages from field inversion and machine learning (FIML) techniques to improve first-principle-based low-fidelity physical models. In a nutshell, the PIROM performs an inference step between high-fidelity data and a low-fidelity model output to extract spatio-temporal discrepancies that can be learnt by a machine learning model in functional form. These functionals are later embedded into the low-fidelity model to inform it of the missing physics. Eventually, this process creates an augmented model, capable of high-fidelity predictions comparable to full-order models while maintaining a low computational cost. Specifically, the PIROM methodology is adopted to generate an improved ROM capable of accelerated and accurate hypersonic aerothermal load prediction for arbitrary thermal and elastic responses from a skin panel structure. On the practical side, the PIROM methodology is used to predict pressure and heat flux loads in a fully-coupled hypersonic aerothermoelastic simulation for a two-dimensional skin panel configuration; a typical structure in hypersonic vehicles. Numerous structural boundary conditions are considered to assess the generalization capabilities of the PIROM. These boundary conditions include clamped, spring, simply-supported, and combinations of these. Specifically, the results of this thesis demonstrate how the PIROM approach can considerably enhance the predictive capabilities of the low-fidelity turbulent-viscous inviscid (TVI) interaction model for aerothermal load prediction, and obtain an efficient and robust augmented TVI (ATVI) model, which is practical in high-fidelity analysis and design of hypersonic structures.
Author: Gabi Ben-Dor
Publisher: Springer
ISBN: 331946213X
Category : Technology & Engineering
Languages : en
Pages : 746
Get Book Here
Book Description
These proceedings collect the papers presented at the 30th International Symposium on Shock Waves (ISSW30), which was held in Tel-Aviv Israel from July 19 to July 24, 2015. The Symposium was organized by Ortra Ltd. The ISSW30 focused on the state of knowledge of the following areas: Nozzle Flow, Supersonic and Hypersonic Flows with Shocks, Supersonic Jets, Chemical Kinetics, Chemical Reacting Flows, Detonation, Combustion, Ignition, Shock Wave Reflection and Interaction, Shock Wave Interaction with Obstacles, Shock Wave Interaction with Porous Media, Shock Wave Interaction with Granular Media, Shock Wave Interaction with Dusty Media, Plasma, Magnetohyrdrodynamics, Re-entry to Earth Atmosphere, Shock Waves in Rarefied Gases, Shock Waves in Condensed Matter (Solids and Liquids), Shock Waves in Dense Gases, Shock Wave Focusing, Richtmyer-Meshkov Instability, Shock Boundary Layer Interaction, Multiphase Flow, Blast Waves, Facilities, Flow Visualization, and Numerical Methods. The two volumes serve as a reference for the participants of the ISSW30 and anyone interested in these fields.
Author: Onur R. Odabas
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: Ernst Heinrich Hirschel
Publisher: Springer Science & Business Media
ISBN: 354089974X
Category : Technology & Engineering
Languages : en
Pages : 512
Get Book Here
Book Description
In this book selected aerothermodynamic design problems in hypersonic vehicles are treated. Where applicable, it emphasizes the fact that outer surfaces of hypersonic vehicles primarily are radiation-cooled, an interdisciplinary topic with many implications.
Author: Basil Hassan
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 424
Get Book Here
Book Description
Author: C. A. Mota Soares
Publisher: Springer Science & Business Media
ISBN: 1402053703
Category : Technology & Engineering
Languages : en
Pages : 861
Get Book Here
Book Description
III European Conference on Computational Mechanics: Solids, Structures and Coupled Problem in Engineering Computational Mechanics in Solid, Structures and Coupled Problems in Engineering is today a mature science with applications to major industrial projects. This book contains the edited version of the Abstracts of Plenary and Keynote Lectures and Papers, and a companion CD-ROM with the full-length papers, presented at the III European Conference on Computational Mechanics: Solids, Structures and Coupled Problems in Engineering (ECCM-2006), held in the National Laboratory of Civil Engineering, Lisbon, Portugal 5th - 8th June 2006. The book reflects the state-of-art of Computation Mechanics in Solids, Structures and Coupled Problems in Engineering and it includes contributions by the world most active researchers in this field.
