Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Nonaka, A. J."'
Autor:
Wang, J. Galen, Ladiges, Daniel R., Srivastava, Ishan, Carney, Sean P., Nonaka, Andy J., Garcia, Alejandro L., Bell, John B.
We study the role of steric effects on the induced-charge electro-osmosis (ICEO) phenomenon using a recently developed mesoscale fluid model. A hybrid Eulerian-Lagrangian method is used to simulate the dynamics of discrete immersed ions in a thermall
Externí odkaz:
http://arxiv.org/abs/2305.11313
Autor:
Mercado, Enrique, Jung, Hyun Tae, Kim, Changho, Garcia, Alejandro L., Nonaka, Andy J., Bell, John B.
Publikováno v:
J. Chem. Phys. 159, 144107 (2023)
Dissociative adsorption onto a surface introduces dynamic correlations between neighboring sites not found in non-dissociative absorption. We study surface coverage dynamics where reversible dissociative adsorption of dimers occurs on a finite linear
Externí odkaz:
http://arxiv.org/abs/2212.12286
Publikováno v:
Phys. Rev. E 107, 015305 (2023)
We present a numerical formulation for the solution of non-isothermal, compressible, Navier-Stokes equations with thermal fluctuations to describe mesoscale transport phenomena in multispecies fluid mixtures. The novelty of our numerical method is th
Externí odkaz:
http://arxiv.org/abs/2209.11292
Modelling long-time convective flows in the interiors of stars is extremely challenging using conventional compressible hydrodynamics codes due to the acoustic timestep limitation. Many of these flows are in the low Mach number regime, which allows u
Externí odkaz:
http://arxiv.org/abs/1910.12979
Autor:
Zingale, M., Almgren, A. S., Sazo, M. Barrios, Bell, J. B., Eiden, K., Harpole, A., Katz, M. P., Nonaka, A. J., Willcox, D. E., Zhang, W.
We describe recent developments to the Castro astrophysics simulation code, focusing on new features that enable our simulations of X-ray bursts. Two highlights of Castro's ongoing development are the new integration technique to couple hydrodynamics
Externí odkaz:
http://arxiv.org/abs/1910.12578
Simulations in stellar astrophysics involve the coupling of hydrodynamics and nuclear reactions under a wide variety of conditions, from simmering convective flows to explosive nucleosynthesis. Numerical techniques such as operator splitting (most no
Externí odkaz:
http://arxiv.org/abs/1908.03661
Publikováno v:
Physics of Fluids 31, 052002 (2019)
A fluid in a non-equilibrium state exhibits long-ranged correlations of its hydrodynamic fluctuations. In this article, we examine the effect of a transpiration interface on these correlations -- specifically, we consider a dilute gas in a domain bis
Externí odkaz:
http://arxiv.org/abs/1902.10598
Autor:
Zingale, M., Eiden, K., Cavecchi, Y., Harpole, A., Bell, J. B., Chang, M., Hawke, I., Katz, M. P., Malone, C. M., Nonaka, A. J., Willcox, D. E., Zhang, W.
We discuss the challenges of modeling X-ray bursts in multi-dimensions, review the different calculations done to date, and discuss our new set of ongoing simulations. We also describe algorithmic improvements that may help in the future to offset so
Externí odkaz:
http://arxiv.org/abs/1810.04720
Publikováno v:
Phys. Rev. Fluids 4, 043701 (2019)
At mesoscopic scales electrolyte solutions are modeled by the fluctuating generalized Poisson-Nernst-Planck (PNP) equations [J.-P. P\'eraud et al., Phys. Rev. F, 1(7):074103, 2016]. However, at length and time scales larger than the Debye scales, ele
Externí odkaz:
http://arxiv.org/abs/1809.08163
Autor:
Donev, Aleksandar, Garcia, Alejandro L., Péraud, Jean-Philippe, Nonaka, Andrew J., Bell, John B.
We apply fluctuating hydrodynamics to strong electrolyte mixtures to compute the concentration corrections for chemical potential, diffusivity, and conductivity. We show these corrections to be in agreement with the limiting laws of Debye, H\"uckel,
Externí odkaz:
http://arxiv.org/abs/1808.07799