Leifur Leifsson's Books

Simulation-driven Aerodynamic Design Using Variable-fidelity Models

By: Leifur Leifsson,Slawomir Koziel

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Simulation-driven Aerodynamic Design Using Variable-fidelity Models

By: Leifur Leifsson,Slawomir Koziel

Computer simulations is a fundamental tool of the design process in many engineering disciplines including aerospace engineering. However, although high-fidelity numerical models are accurate, they can be computationally expensive with evaluation time for a single design as long as hours, days or even weeks. Simulation-driven design using conventional optimization techniques may be therefore prohibitive.This book explores the alternative: performing computationally efficient design using surrogate-based optimization, where the high-fidelity model is replaced by its computationally cheap but still reasonably accurate representation: a surrogate. The emphasis is on physics-based surrogates. Application-wise, the focus is on aerodynamics and the methods and techniques described in the book are demonstrated using aerodynamic shape optimization cases. Applications in other engineering fields are also demonstrated.State-of-the-art techniques and a depth of coverage never published before make this a unique and essential book for all researchers working in aerospace and other engineering areas and dealing with optimization, computationally expensive design problems, and simulation-driven design.

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Page Count

444

Publisher

World Scientific

Published Date

ISBN 10

1783266309

ISBN 13

9781783266302

Simulation-Driven Design by Knowledge-Based Response Correction Techniques

By: Slawomir Koziel,Leifur Leifsson

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Simulation-Driven Design by Knowledge-Based Response Correction Techniques

By: Slawomir Koziel,Leifur Leifsson

Focused on efficient simulation-driven multi-fidelity optimization techniques, this monograph on simulation-driven optimization covers simulations utilizing physics-based low-fidelity models, often based on coarse-discretization simulations or other types of simplified physics representations, such as analytical models. The methods presented in the book exploit as much as possible any knowledge about the system or device of interest embedded in the low-fidelity model with the purpose of reducing the computational overhead of the design process. Most of the techniques described in the book are of response correction type and can be split into parametric (usually based on analytical formulas) and non-parametric, i.e., not based on analytical formulas. The latter, while more complex in implementation, tend to be more efficient. The book presents a general formulation of response correction techniques as well as a number of specific methods, including those based on correcting the low-fidelity model response (output space mapping, manifold mapping, adaptive response correction and shape-preserving response prediction), as well as on suitable modification of design specifications. Detailed formulations, application examples and the discussion of advantages and disadvantages of these techniques are also included. The book demonstrates the use of the discussed techniques for solving real-world engineering design problems, including applications in microwave engineering, antenna design, and aero/hydrodynamics.

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Page Count

266

Publisher

Springer

Published Date

ISBN 10

3319301152

ISBN 13

9783319301150

Sagas of Warrior-poets

By: Leifur Eiricksson

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Sagas of Warrior-poets

By: Leifur Eiricksson

Kormak's Saga, The Saga of Hallfred Troublesome-Poet, The Saga of Gunnlaug Serpent-Tongue, The Saga of Bjorn, Champion of the Hitardal People, Viglund's Saga Set in the farmsteads of Viking age Iceland at a time when the old ethos of honour and heroic adventure merged with new ideas of romantic infatuation, each of these sagas features poet heroes, complex love triangles, and travels to foreign lands.

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Page Count

430

Publisher

Penguin UK

Published Date

ISBN 10

0141941588

ISBN 13

9780141941585

The Vinland Sagas

By: Leifur Eiricksson

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The Vinland Sagas

By: Leifur Eiricksson

The Saga of the Greenlanders and Eirik the Red’s Saga contain the first ever descriptions of North America, a bountiful land of grapes and vines, discovered by Vikings five centuries before Christopher Columbus. Written down in the early thirteenth century, they recount the Icelandic settlement of Greenland by Eirik the Red, the chance discovery by seafaring adventurers of a mysterious new land, and Eirik’s son Leif the Lucky’s perilous voyages to explore it. Wrecked by storms, stricken by disease and plagued by navigational mishaps, some survived the North Atlantic to pass down this compelling tale of the first Europeans to talk with, trade with, and war with the Native Americans.

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Page Count

164

Publisher

Penguin UK

Published Date

ISBN 10

0141991550

ISBN 13

9780141991559

Simulation-driven Aerodynamic Design Using Variable-fidelity Models

By: Leifur Leifsson,Slawomir Koziel

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Simulation-driven Aerodynamic Design Using Variable-fidelity Models

By: Leifur Leifsson,Slawomir Koziel

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Solve jigsaw puzzle

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Page Count

444

Publisher

World Scientific

Published Date

ISBN 10

1783266309

ISBN 13

9781783266302

Book's by Leifur Leifsson

Simulation-driven Aerodynamic Design Using Variable-fidelity Models

Simulation-driven Aerodynamic Design Using Variable-fidelity Models

Simulation-Driven Design by Knowledge-Based Response Correction Techniques

Simulation-Driven Design by Knowledge-Based Response Correction Techniques

Sagas of Warrior-poets

Sagas of Warrior-poets

The Vinland Sagas

The Vinland Sagas

Simulation-driven Aerodynamic Design Using Variable-fidelity Models

Simulation-driven Aerodynamic Design Using Variable-fidelity Models

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