Results 41 to 50 of about 6,989 (307)

Energy decay in a granular gas collapse

New Journal of Physics, 2017
An inelastic hard ball bouncing repeatedly off the ground comes to rest in finite time by performing an infinite number of collisions. Similarly, a granular gas under the influence of external gravity, condenses at the bottom of the confinement due to ...
Lidia Almazán, Dan Serero, Clara Salueña, Thorsten Pöschel   +3 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

MHD numerical simulations in a cosmological context [PDF]

, 2011
Magnetic fields in the Universe are found in almost all studied environments. In particular, their presence in the inter-galactic medium and in the intra-cluster medium is confirmed by diffuse radio emission as well as by observations of Faraday ...
Stasyszyn, Federico Andrés, Stasyszyn, F.   +1 more
core  

Hydrodynamical simulations of colliding jets:modeling 3C 75 [PDF]

, 2017
Radio observations suggest that 3C 75, located in the dumbbell shaped galaxy NGC 1128 at the center of Abell 400, hosts two colliding jets. Motivated by this source, we perform three-dimensional hydrodynamical simulations using a modified version of the ...
Chiueh, T., Schive, H. -Y., Schive, H. Y., Musoke, G., Molnár, Sándor Mihály, Birkinshaw, M., Molnar, S. M., Young, A. J.   +7 more
core   +1 more source

IQ Collaboratory. III. The Empirical Dust Attenuation Framework-Taking Hydrodynamical Simulations with a Grain of Dust [PDF]

, 2022
We present the empirical dust attenuation (EDA) framework—a flexible prescription for assigning realistic dust attenuation to simulated galaxies based on their physical properties. We use the EDA to forward model synthetic observations for three state-of-
Angles-Alcazar, Daniel, Yung, L. Y. Aaron, Dave, Romeel, Hahn, ChangHoon, Tinker, Jeremy L., Choi, Ena, Dickey, Claire, Maller, Ariyeh H., Starkenburg, Tjitske K., Iyer, Kartheik G., Somerville, Rachel S.   +10 more
core   +1 more source

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

Advanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi, Hadi Moutablaleh, Ignatius A. Setiawan, Mehrshad Mehrpouya   +3 more
wiley   +1 more source

Simple Convective Accretion Flows (SCAFs): Explaining the ≈ −1 Density Scaling of Hot Accretion Flows around Compact Accretors

The Astrophysical Journal, 2023
Recent simulations find that hot gas accretion onto compact accretors is often highly turbulent and diskless, and shows a power-law density profile with slope α _ρ ≈ −1.
Wenrui Xu
doaj   +1 more source

Hydrodynamic Simulations of Convection [PDF]

International Astronomical Union Colloquium, 2002
Convection is one of the most problematic components of almost every model of a pulsating star. RR Lyrae stars, in particular, have a narrow convection zone at the outer layers, and a model without convection cannot get the red edge of the instability strip (see for example Kollath et al., 2000).In recent years, the common approach is to use non-local ...
openaire   +1 more source

Dependence on the Equation of State in SPH Simulations of Proto-Uranian Disk Formation from a Giant Impact

The Astrophysical Journal
The 98° obliquity of Uranus is widely attributed to a giant impact that ejected material and formed a debris disk, which subsequently coalesced into its regular satellites.
Keiya Murashima, Takanori Sasaki
doaj   +1 more source

Hydrodynamical Simulations of Recollimation Shocks within Relativistic Astrophysical Jets

Galaxies, 2018
Astrophysical jets launched from active galactic nuclei can remain tightly collimated over large distances due, in part, to recollimation shocks.
Christopher D. Kaye, Timothy V. Cawthorne, Philip A. Hughes   +2 more
doaj   +1 more source