Author: Paul R. Woodward
Publisher:
ISBN:
Category : Flow visualization
Languages : en
Pages : 13

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Book Description

Author: Raul H. Mendez
Publisher: Springer Science & Business Media
ISBN: 1461233380
Category : Computers
Languages : en
Pages : 215

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Book Description
Massive amounts of numeric data are far more comprehensible when converted into graphical form. Hence visualization is becoming an integral part of many areas of research. The idea of visualization is not new, but techniques for visualization are still being developed, and visualization research is just beginning to be recognized as a cornerstone of future computer science. As scientists handle increasingly complex problems with computers, visualization will become an even more essential tool for extracting sense from numbers. This volume is a collection of the best papers selected from those presented at the August 1988 Visualization in Supercomputing Conference in Tokyo, Japan. It is divided into three parts: visualization applications, hardware and performance, and visualization theory. Subjects covered include visualization methods used in computational fluid dynamics research, time-to-solution aspects of visualization, the use of parallel/vector computers with finite element method systems, basic computational performance of two graphics supercomputers, and the applicability of the volume imaging concept in various fields.

Author: W. Borchers
Publisher: VSP
ISBN: 9789067642149
Category : Technology & Engineering
Languages : en
Pages : 200

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Book Description
The developments of new algorithms in applied mathematics, of new concepts in computer sciences, and of new hardware in computer technology have led to an immense output of data streams describing the solutions of important physical or technological problems. In order to understand and to explore the results of calculations, new visualization methods have been developed. These novel methods are indispensable for mathematicians and engineers working with problems such as flow theory or elasticity. These proceedings contain selected contributions from the DFG-workshop on visualization, held at the University of Paderborn, January 18--20, 1994, and will be of interest to researchers in the above mentioned fields.

Author: Raul H Mendez
Publisher:
ISBN: 9781461233398
Category :
Languages : en
Pages : 232

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Book Description

Author: Janusz S. Kowalik
Publisher: Springer Science & Business Media
ISBN: 3642757715
Category : Computers
Languages : en
Pages : 416

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Book Description
Supercomputing is an important science and technology that enables the scientist or the engineer to simulate numerically very complex physical phenomena related to large-scale scientific, industrial and military applications. It has made considerable progress since the first NATO Workshop on High-Speed Computation in 1983 (Vol. 7 of the same series). This book is a collection of papers presented at the NATO Advanced Research Workshop held in Trondheim, Norway, in June 1989. It presents key research issues related to: - hardware systems, architecture and performance; - compilers and programming tools; - user environments and visualization; - algorithms and applications. Contributions include critical evaluations of the state-of-the-art and many original research results.

Author: Rae Earnshaw
Publisher: Springer Science & Business Media
ISBN: 3642581013
Category : Computers
Languages : en
Pages : 170

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Book Description
Scientific visualization is concerned with exploring data and information insuch a way as to gain understanding and insight into the data. This is a fundamental objective of much scientific investigation. To achieve this goal, scientific visualization utilises aspects in the areas of computergraphics, user-interface methodology, image processing, system design, and signal processing. This volume is intended for readers new to the field and who require a quick and easy-to-read summary of what scientific visualization is and what it can do. Written in a popular andjournalistic style with many illustrations it will enable readers to appreciate the benefits of scientific visualization and how current tools can be exploited in many application areas. This volume is indispensible for scientists and research workers who have never used computer graphics or other visual tools before, and who wish to find out the benefitsand advantages of the new approaches.

Author: Martin Göbel
Publisher: Springer Science & Business Media
ISBN: 3642778119
Category : Computers
Languages : en
Pages : 285

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Book Description
The book reports on a workshop on Graphics Modeling and Visualization in scientific, engineering and technical applications. Visualization is known as the key technology to control massive data sets and to achieve insight into these tera bytes of data. Graphics Modeling is the enabling technology for advanced interaction. The papers report on applied visualization or basic research in modeling and visualization. Applications - using commercial or experimental visualization tools - cover the following fields: engineering and design, environmental research, material science, computational sciences, fluid dynamics and algorithmic visualization.

Author: Paul R. Woodward
Publisher:
ISBN:
Category : Flow visualization
Languages : en
Pages : 13

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Book Description

Author: Alexy Agranovsky
Publisher:
ISBN: 9781321607864
Category :
Languages : en
Pages :

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Book Description
Within both the scientific and academic communities, the study and visualization of flow is an essential tool used to model fluid transport and mixing. Modern Computational Fluid Dynamics (CFD) simulations are used to successfully approximate real-world physics to reproduce dynamic flow behavior, however, from simulation to visualization, maintaining a high level of accuracy is fraught with obstacles. In this thesis, we address two major challenges to visualizing fluid flow data accurately. The first challenge, encountered during the simulation stage, is the inability of supercomputers to allow simulations to be saved at their native resolution. The second challenge, confronted in the post-processing stage, involves combating the substantial and discouraging computational expense associated with highly accurate particle-based visualization techniques. We begin by presenting a framework for detecting and accumulating flow characteristics during the particle advection process, aimed at optimizing the associated computational burden. Consequently, we provide evidence of a wealth of fluid flow knowledge that can be gained with little computational overhead. We then extend the detection of these flow transformation effects to the simulation stage, offering a novel compression algorithm designed to dynamically distribute the constrained budget set when writing simulation results to disk. The output focuses on flow deformation and rotation, thereby improving visualization accuracy in turbulent regions. Next, we describe the versatility of interpolation as a substitute for costly and iterative numerical integration. We present a method for categorizing salient flow features using only a sub- set of advected particles to interpolate the remaining domain information. Overall, the number of advection steps is drastically cut down and our method is able to better visualize features of interest with fewer particles. Building on this work, we eliminate advection entirely and develop an inter- active exploration environment based solely on interpolating trajectory position information. After achieving positive results in the visualization stage, we further explore the Lagrangian representation - a dense sampling of the flow field with particle trajectories - as an alternative output to CFD simulations. Through a series of comprehensive tests, we verify that the Lagrangian representation is less sensitive than traditional output to the unavoidable temporal compression that occurs when writing to disk. Subsequently, we demonstrate that particle trajectories extracted during the post- processing stage are more accurate, with the added benefit of increased performance and less disk space usage necessary to store the simulation output itself. The primary objective of our work is to advance the field of flow visualization, focusing on the challenges that arise when high accuracy is required. With CFD simulations growing ever more complex and many scientists within academia and industry turning to flow visualization, we provide solutions to help retain flow field accuracy while optimizing both the storage of simulation data on disk and the computational expense of particle-based visualization techniques.

Author: Murman
Publisher: Springer Science & Business Media
ISBN: 9780817633219
Category : Juvenile Nonfiction
Languages : en
Pages : 424

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Book Description
The present volume, with the exception of the introductory chapter, consists of papers delivered at the workshop entitled "The Impact of Supercomputers on the Next Decade of Computational Fluid Dynamics," The workshop, which took place in Jerusalem, Israel during the week of December 16, 1984, was initiated by the National Science Foundation of the USA (NSF), by the Ministry of Science and Development, Israel (IMSD), and co-sponsored by the National Aeronautics and Space Administration (NASA), the Office of Scientific Research of the U.S. Air Force (AFOSR), Tel Aviv University and Massachusetts Institute of Technology. The introductory chapter attempts to summarize what transpired at the workshop. The genesis of the workshop was an agreement between NSF and Il1S, signed in the spring of 1983, to conduct a series of bi-national work shops and symposia. This workshop represented the first activity spon sored under the agreement. The undersigned were selected by their respective national bodies to act as co-coordinators and organizers of the workshop. The first question that we faced was to decide upon a topic. In the past few years the field of CFD has mushroomed and consequently there have been many meetings, symposia, workshops, congresses, etc.