JET Simulations, Experiments, and Theory

JET Simulations, Experiments, and Theory PDF

Author: Christophe Sauty

Publisher: Springer

Published: 2019-08-02

Total Pages: 154

ISBN-13: 3030141284

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In 2008, the European FP6 JETSET project ended. JETSET, for Jet, Simulations, Experiments, and Theory, was a joint research network of European expert teams on protostellar jets. The present proceedings are a collection of contributions presenting new results obtained by those groups since the end of the JETSET program. This is also the occasion to celebrate Kanaris Tsinganos’ important contributions to this network and for his enlightening insight in the subject that inspired us all. Some of the former JETSET students are now in the academic world and the subject has never been so alive. So we present here a collection of results of what has been done in the field of protostellar jets in the past ten years from the theoretical, numerical, observational and experimental point of view. We also present new challenges in the field of protostellar jets and what we should expect from the development of new instruments and new numerical codes in the near future. We also gather results on the impact of the study of protostellar jets on other jet studies in particular on relativistic jets. As a matter of fact, it is time for a new network.

JET Simulations, Experiments, and Theory

JET Simulations, Experiments, and Theory PDF

Author: Christophe Sauty

Publisher:

Published: 2019

Total Pages: 154

ISBN-13: 9783030141295

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In 2008, the European FP6 JETSET project ended. JETSET, for Jet, Simulations, Experiments, and Theory, was a joint research network of European expert teams on protostellar jets. The present proceedings are a collection of contributions presenting new results obtained by those groups since the end of the JETSET program. This is also the occasion to celebrate Kanaris Tsinganos? important contributions to this network and for his enlightening insight in the subject that inspired us all. Some of the former JETSET students are now in the academic world and the subject has never been so alive. So we present here a collection of results of what has been done in the field of protostellar jets in the past ten years from the theoretical, numerical, observational and experimental point of view. We also present new challenges in the field of protostellar jets and what we should expect from the development of new instruments and new numerical codes in the near future. We also gather results on the impact of the study of protostellar jets on other jet studies in particular on relativistic jets. As a matter of fact, it is time for a new network.

Jets from Young Stars

Jets from Young Stars PDF

Author: Jonathan Ferreira

Publisher: Springer

Published: 2007-08-30

Total Pages: 228

ISBN-13: 3540680357

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This volume presents the edited lecture notes of the First JETSET School on Jets from Young Stars: Models and Constraints, held by the Marie Curie Research and Training Network on JET Simulations, Experiments and Theory. The first half of the book is devoted to general observational constraints. The second section is devoted to theoretical knowledge of magneto-hydrodynamic processes pertinent to the jet launching mechanism in young stars.

Experimental and Theoretical Studies of Axisymmetric Free Jets

Experimental and Theoretical Studies of Axisymmetric Free Jets PDF

Author:

Publisher:

Published: 1959

Total Pages: 300

ISBN-13:

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Some experimental and theoretical studies have been made of axisymmetric free jets exhausting from sonic and supersonic nozzles into still air and into supersonic streams with a view toward problems associated with propulsive jets and the investigation of these problems. For jets exhausting into still air, consideration is given to the effects of jet Mach number, nozzle divergence angle, and jet static-pressure ratio upon jet structure, jet wavelength, and the shape and curvature of the jet boundary. Studies of the effects of the ratio of specific heats of the jets are included as are observations pertaining to jet noise and jet simulation. For jets exhausting into supersonic streams, an attempt has been made to present primarily theoretical curves of the type that may be useful in evaluating certain jet interference effects and in formulating experimental studies. The primary variables considered are jet Mach number, free-stream Mach number, jet static-pressure ratio, ratio of specific heats of the jet, nozzle exit angle, and boattail angle. The simulation problem and the case of a hypothetical hypersonic vehicle are examined. A few experimental observations are included.

Jets from Young Stars

Jets from Young Stars PDF

Author: Jonathan Ferreira

Publisher: Springer

Published: 2009-09-02

Total Pages: 228

ISBN-13: 9783540833734

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This volume presents the edited lecture notes of the First JETSET School on Jets from Young Stars: Models and Constraints, held by the Marie Curie Research and Training Network on JET Simulations, Experiments and Theory. The first half of the book is devoted to general observational constraints. The second section is devoted to theoretical knowledge of magneto-hydrodynamic processes pertinent to the jet launching mechanism in young stars.

Jets from Young Stars II

Jets from Young Stars II PDF

Author: Francesca Bacciotti

Publisher: Springer

Published: 2007-10-31

Total Pages: 297

ISBN-13: 3540680322

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This volume offers a background in modern high spatial resolution techniques, illustrating how such methods have impacted on our understanding of young stars. It provides hands-on insight into observing from space as well as the ground, the use of interferometers at millimeter and infrared wavelengths, image analysis and spectral diagnostic techniques, and High Angular Resolution studies of the inner regions of circumstellar disks that play a fundamental role in jet launching.

Abrasive Water Jet Perforation and Multi-Stage Fracturing

Abrasive Water Jet Perforation and Multi-Stage Fracturing PDF

Author: Zhongwei Huang

Publisher: Gulf Professional Publishing

Published: 2017-10-19

Total Pages: 398

ISBN-13: 0128128429

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Abrasive Water Jet Perforation and Multi-Stage Fracturing gives petroleum engineers, well completion managers and fracturing specialists a critical guide to understanding all the details of the technology including materials, tools, design methods and field applications. The exploitation and development of unconventional oil and gas resources has continued to gain importance, and multi-stage fracturing with abrasive water jets has emerged as one of the top three principal methods to recover unconventional oil and gas, yet there is no one collective reference to explain the fundamentals, operations and influence this method can deliver. The book introduces current challenges and gives solutions for the problems encountered. Packed with references and real-world examples, the book equips engineers and specialists with a necessary reservoir stimulation tool to better understand today’s fracturing technology. Provides understanding of the fundamentals, design and application of water jet perforation Examines the pressure boosting assembly in all phases including initiation, hydraulic isolation and production stage Evaluates production analysis, pump pressure predictions and the latest design software Introduces current challenges and gives solutions for the problems encountered

High Energy Density Laboratory Astrophysics

High Energy Density Laboratory Astrophysics PDF

Author: Sergey V. Lebedev

Publisher: Springer Science & Business Media

Published: 2007-05-27

Total Pages: 321

ISBN-13: 1402060556

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This work will be of interest to a wide range of academics. It provides a comprehensive round-up of the proceedings and papers delivered at the 2006 Conference on High Energy Density Laboratory Astrophysics, held at Rice University in Houston, Texas, USA. The contributions come from scientists interested in this emerging field. They discuss the progress in topics covering everything from stellar evolution and envelopes, to opacities, radiation transport and x-ray photoionized plasmas.

Jets from Young Stars IV

Jets from Young Stars IV PDF

Author: Paulo Jorge Valente Garcia

Publisher: Springer Science & Business Media

Published: 2009-11-23

Total Pages: 259

ISBN-13: 364202288X

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Astronomical jets are key astrophysical phenomena observed in gamma-ray bursts, active galactic nuclei or young stars. Research on them has largely occurred within the domains of astronomical observations, astrophysical modeling and numerical simulations, but the recent advent of high energy density facilities has added experimental control to jet studies. Front-line research on jet launching and collimation requires a highly interdisciplinary approach and an elevated level of sophistication. Bridging the gaps between pure magnetohydrodynamics, thermo-chemical evolution, high angular resolution spectro-imaging and laboratory experiments is no small matter. This volume strives to bridge those very gaps. It offers a series of lectures which, taken as whole, act as a thorough reference for the foundations of this discipline. These lectures address the following: · laboratory jets physics from laser and z-pinch plasma experiments, · the magnetohydrodynamic theory of relativistic and non-relativistic stationary jets, · heating mechanisms in magnetohydrodynamic jets, from the solar magnetic reconnection to the molecular shock heating perspectives, · atomic and molecular microphysics of jet shocked material. In addition to the lectures, the book offers, in closing, a presentation of a series of observational diagnostics, thus allowing for the recovery of basic physical quantities from jet emission lines.