Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Porter, David"'
Flux2D commercial software together with a Gleeble thermomechanical simulator has been employed to numerically and physically simulate the material properties profile of an induction hardened slurry transportation pipe made of a recently developed 0.
Externí odkaz:
http://arxiv.org/abs/1906.05007
The induction hardening behavior of a new, hot-rolled 0.4 wt.% carbon steel with the two different starting microstructures of upper and lower bainite has been simulated using a Gleeble 3800. The effect of heating rate in the range 1 - 500 {\deg}C/s
Externí odkaz:
http://arxiv.org/abs/1812.10663
Autor:
Herwig, Falk, Andrassy, Robert, Annau, Nic, Clarkson, Ondrea, Cote, Benoit, D'Sa, Aaron, Jones, Sam, Moa, Belaid, O'Connell, Jericho, Porter, David, Ritter, Christian, Woodward, Paul
Collaborations in astronomy and astrophysics are faced with numerous cyber infrastructure challenges, such as large data sets, the need to combine heterogeneous data sets, and the challenge to effectively collaborate on those large, heterogeneous dat
Externí odkaz:
http://arxiv.org/abs/1802.02233
Autor:
Mendygral, Peter, Radcliffe, Nick, Kandalla, Krishna, Porter, David, O'Neill, Brian J., Nolting, Chris, Edmon, Paul, Donnert, Julius M. F., Jones, Thomas W.
We present a new code for astrophysical magneto-hydrodynamics specifically designed and optimized for high performance and scaling on modern and future supercomputers. We describe a novel hybrid OpenMP/MPI programming model that emerged from a collab
Externí odkaz:
http://arxiv.org/abs/1701.07452
We analyze high resolution simulations of compressible, MHD turbulence with properties resembling conditions in galaxy clusters. The flow is driven to turbulence Mach number $\mathcal{M}_t \sim 1/2$ in an isothermal medium with an initially very weak
Externí odkaz:
http://arxiv.org/abs/1507.08737
Autor:
Bendich, Paul, Chin, Sang, Clarke, Jesse, deSena, Jonathan, Harer, John, Munch, Elizabeth, Newman, Andrew, Porter, David, Rouse, David, Strawn, Nate, Watkins, Adam
We introduce the first unified theory for target tracking using Multiple Hypothesis Tracking, Topological Data Analysis, and machine learning. Our string of innovations are 1) robust topological features are used to encode behavioral information, 2)
Externí odkaz:
http://arxiv.org/abs/1406.0214
Cluster media are dynamical, not static; observational evidence suggests they are turbulent. High-resolution simulations of the intracluster media (ICMs) and of idealized, similar media help us understand the complex physics and astrophysics involved
Externí odkaz:
http://arxiv.org/abs/1101.4050
Autor:
Herwig, Falk, Pignatari, Marco, Woodward, Paul R., Porter, David H., Rockefeller, Gabriel, Fryer, Chris L., Bennett, Michael, Hirschi, Raphael
Depending on mass and metallicity as well as evolutionary phase, stars occasionally experience convective-reactive nucleosynthesis episodes. We specifically investigate the situation when nucleosynthetically unprocessed, H-rich material is convective
Externí odkaz:
http://arxiv.org/abs/1002.2241
Autor:
Woodward, Paul R., Porter, David H., Herwig, Falk, Pignatari, Marco, Jayaraj, Jagan, Lin, Pei-Hung
The He-shell flash convection in AGB stars is the site for the high-temperature component of the s-process in low- and intermediate mass giants, driven by the Ne22 neutron source. [...] The upper convection boundary plays a critical role during the H
Externí odkaz:
http://arxiv.org/abs/0901.1414
Autor:
Woodward, Paul, Herwig, Falk, Porter, David, Fuchs, Tyler, Nowatzki, Anthony, Pignatari, Marco
Publikováno v:
AIP Conf.Proc.990:300-308,2008
The evolution of the first generations of stars at zero or extremly low metallicity, and especially some crucial properties like the primary N14 production, is charactarized by convective-reactive mixing events that are mostly absent from similar evo
Externí odkaz:
http://arxiv.org/abs/0711.2091