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Data-driven Modeling of Two-Dimensional Detonation Wave Fronts [article]

Ariana Mendible, Weston Lowrie, Steven L. Brunton, J. Nathan Kutz
2021 arXiv   pre-print
Historical experimental testing of high-altitude nuclear explosions (HANEs) are known to cause severe and detrimental effects to radio frequency signals and communications infrastructure.  ...  In order to study and predict the impact of HANEs, tractable computational approaches are required to model the complex physical processes involved in the detonation wave physics.  ...  High-Altitude Nuclear Explosions HANEs are nuclear explosions that detonate within Earth's atmosphere above an altitude of approximately 30 kilometers.  ... 
arXiv:2106.16224v1 fatcat:kxc4xbs6zzhvtc2iqbi6lz7ah4

Preparing Nuclear Astrophysics for Exascale [article]

Max P. Katz, Ann Almgren, Maria Barrios Sazo, Kiran Eiden, Kevin Gott, Alice Harpole, Jean M. Sexton, Don E. Willcox, Weiqun Zhang, Michael Zingale
2020 arXiv   pre-print
Castro and MAESTROeX are nuclear astrophysics codes that simulate thermonuclear fusion in the context of supernovae and X-ray bursts.  ...  Examining these nuclear burning processes using high resolution simulations is critical for understanding how these astrophysical explosions occur.  ...  Absolute throughputs for any data point can be reconstructed by multiplying this reference throughput by the number of nodes and the normalized throughput.  ... 
arXiv:2007.05218v1 fatcat:x32sereeenf5niid65px6i5cci

Thermonuclear Supernovae [article]

F. K. Roepke
2008 arXiv   pre-print
I review the currently discussed approaches and present some recent results from simulations of the turbulent deflagration model and the delayed detonation model.  ...  Three-dimensional hydrodynamical simulations allowed to study a wide variety of possibilities involving subsonic flame propagation (deflagrations), flames accelerated by turbulence, and supersonic detonations  ...  Acknowledgments I would like to thank the organizers of the conference for the kind invitation. I enjoyed the inspiring atmosphere at the conference.  ... 
arXiv:0804.2147v1 fatcat:43p5vv2vwrcyziu7jcxjl7dwjm

Explosive Nucleosynthesis in Near-Chandrasekhar-mass White Dwarf Models for Type Ia Supernovae: Dependence on Model Parameters

Shing-Chi Leung, Ken'ichi Nomoto
2018 Astrophysical Journal  
We present two-dimensional hydrodynamics simulations of near-Chandrasekhar mass white dwarf (WD) models for Type Ia supernovae (SNe Ia) using the turbulent deflagration model with deflagration-detonation  ...  We find that dependencies of the nucleosynthesis yields on the metallicity and the central density (WD mass) are large.  ...  Once this condition is satisfied, we put in the initial C-detonation in the form of 2D bubble (a ring) at that point, and allow that detonation to freely evolve.  ... 
doi:10.3847/1538-4357/aac2df fatcat:3dpweencgnemrpmevh732dmht4

ASSESSMENT OF CFD CODES USED IN NUCLEAR REACTOR SAFETY SIMULATIONS

Brian L. Smith
2010 Nuclear Engineering and Technology  
ACKNOWLEDGMENTS The author is grateful to the members of the WG2 group for the concerted effort they made in compiling the CFD assessment base referred to in this paper.  ...  Atmospheric release of nuclear materials (in the form of both aerosols and gases) implies air contamination, at first on-site and later off-site.  ...  The CFD code FLUENT [37] has been used to calculate the hydrogen distribution in a BWR containment, in combination with DET3D [38] for the 3D detonation simulation, and with ABAQUS [39] for the structural  ... 
doi:10.5516/net.2010.42.4.339 fatcat:sq2xegstl5dpnf3r2t2hzdia7a

Multi-Modal and Multi-Temporal Data Fusion: Outcome of the 2012 GRSS Data Fusion Contest

Christian Berger, Michael Voltersen, Robert Eckardt, Jonas Eberle, Thomas Heyer, Nesrin Salepci, Soren Hese, Christiane Schmullius, Junyi Tao, Stefan Auer, Richard Bamler, Ken Ewald (+5 others)
2013 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing  
The 2012 Data Fusion Contest organized by the Data Fusion Technical Committee (DFTC) of the IEEE Geoscience and Remote Sensing Society (GRSS) aimed at investigating the potential use of very high spatial  ...  Three different types of data sets, including spaceborne multi-spectral, spaceborne synthetic aperture radar (SAR), and airborne light detection and ranging (LiDAR) data collected over the downtown San  ...  This involves new estimation algorithms, like sparse reconstruction and compressive sensing.  ... 
doi:10.1109/jstars.2013.2245860 fatcat:i5pcmwngy5hpjaf7huux7gkvqm

Volcano Infrasound and the International Monitoring System [chapter]

Robin Matoza, David Fee, David Green, Pierrick Mialle
2018 Infrasound Monitoring for Atmospheric Studies  
This research has identified diverse source mechanisms of volcanically generated infrasound, and elucidated the influence of near-source topography and local atmospheric conditions on acoustic propagation  ...  Energetic infrasound from explosive volcanism can propagate hundreds to thousands of kilometers in atmospheric waveguides and large explosive eruptions (which represent significant societal and economic  ...  is applied using 3D ray-tracing and ECMWF, HWM07, and MSIS90 atmospheric specifications (Matoza et al. 2011a ).  ... 
doi:10.1007/978-3-319-75140-5_33 fatcat:d427qclq3zgnfimz4vz76sogze

Radiocarbon in the land and ocean components of the Community Earth System Model

Tobias Frischknecht, Altug Ekici, Fortunat Joos
2021 Global Biogeochemical Cycles  
In addition, large amounts of 14 C were injected into the stratosphere as a byproduct of nuclear bomb tests in the 1950s and 1960s (Enting, 1982) .  ...  The Earth system budget of bomb 14 C is established by comparing bomb 14 C production statistics and inventory changes in the atmosphere, ocean, and land biosphere.  ...  group under the lead of Esther Brady for general support.  ... 
doi:10.1029/2021gb007042 fatcat:fnae7phtsne7pny5zziin4w64e

Power pulsing of the CALICE tile hadron calorimeter

Mathias Reinecke
2016 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop (NSS/MIC/RTSD)  
This achievement was recognised through the award of the 2015 Nobel prize for physics to the leaders of the SNO and Super-Kamiokande experiments for the conclusive establishment of the phenomenon of neutrino  ...  Nevertheless, as a result of a series of innovative large experiments in the last 20 years, we have learnt a great deal about neutrinos.  ...  The principles will be described along with several examples of spectral X-ray radiography. R13-3: 3D Non-Destructive Fluorescent X-Ray Computed Tomography (FXCT) with a CdTe Array  ... 
doi:10.1109/nssmic.2016.8069748 fatcat:zjgd7dmfdbhntb4kfwdtrlejhi

Observational Clues to the Progenitors of Type Ia Supernovae

Dan Maoz, Filippo Mannucci, Gijs Nelemans
2014 Annual Review of Astronomy and Astrophysics  
We point to some directions that may lead to future progress.  ...  , and from the measurement of event rates.  ...  D.M. acknowledges support by a grant from the Isreal Science Foundation (ISF) and by I-Core Program grant 1829/12 of the Planning and Budgeting Committee and the ISF. LITERATURE CITED  ... 
doi:10.1146/annurev-astro-082812-141031 fatcat:wi6swjimavb3dpepjvrxhmssmu

IAU Commission 35 Stellar Constitution - Triennial report 2009-2011 [article]

Corinne Charbonnel
2011 arXiv   pre-print
IAU Commission 35 consists of members of the International Astronomical Union whose research is concerned with the structure and evolution of stars in all parts of the H-R diagram.  ...  histories of stars that are of vital importance for our understanding of stellar populations and galactic chemical evolution.  ...  Recently, independent 3D models have been used to calculate solar abundances of the key elements and calculated values are higher than the earlier estimates also obtained using 3D atmospheric models (  ... 
arXiv:1111.0589v1 fatcat:rkeholtixjaf3efournr4g4c2y

COMMISSION 35: STELLAR CONSTITUTION

Corinne Charbonnel, Marco Limongi, Francesca D'Antona, Gilles Fontaine, Jordi Isern, John C. Lattanzio, Claus Leitherer, Jacco Th. van Loon, Achim Weiss, Lev R. Youngelson
2011 Proceedings of the International Astronomical Union  
Recently, independent 3D models have been used to calculate solar abundances of the key elements and calculated values are higher than the earlier estimates also obtained using 3D atmospheric models (  ...  The Sun (C.Charbonnel) During the last decade the use of 3D solar atmospheric models has lead to a revision downwards of the abundances of heavy elements (mainly oxygen; Asplund et al. 2005 , Grevesse  ... 
doi:10.1017/s1743921312002773 fatcat:lr2t4pnhtfadloik7ekna3oswa

A comparison of two EIT systems suitable for imaging impedance changes in epilepsy

L Fabrizi, A McEwan, T Oh, E J Woo, D S Holder
2009 Physiological Measurement  
Reconstructed images from a single frame for the three perturbation positions. Images are displayed as a transparent 3D model with the main reconstructed perturbation (blue volume).  ...  The optimal values of PIP and PEEP are deduced from the shape of the PV curve by identification of so-called lower and upper inflection points.  ...  Number EEC-9986821) and by NIBIB, the National Institute of Biomedical Imaging and Bioengineering under Grant Number R01-EB000456-03.  ... 
doi:10.1088/0967-3334/30/6/s07 pmid:19491447 fatcat:nzeetw52ofaslcwhd2kxylvlpu

Neutrino flavour as a test of the explosion mechanism of core-collapse supernovae [article]

Nitsan Bar, Kfir Blum, Guido D'Amico
2018 arXiv   pre-print
star profile and equation of state.  ...  of a galactic core-collapse supernova.  ...  KB is incumbent of the Dewey David Stone and Harry Levine career development chair.  ... 
arXiv:1811.11178v1 fatcat:e2gj77mlpfedridzkifhrrphle

MAM volume 22 issue s3 Cover and Front matter

2016 Microscopy and Microanalysis  
David is a fellow of both the American Physical Society and the Microscopy Society of America.  ...  world's thinnest sheet of glass.  ...  Interactions Between Irradiation Defects and Crystal Defects in Austenitic Stainless Steels; B Cui, F Wang, Q Lu 2016 2016 2016 Surface and Point Defect Measurements of Detonation Nanodiamond Using Combined  ... 
doi:10.1017/s1431927616011508 fatcat:uabws6xnszdnboyn55ksszjdjm
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