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Browsing Saint Mary's Faculty Articles and Other Works by Subject "Hydrodynamics"

Now showing items 1-11 of 11

Cloud angular momentum and effective viscosity in global SPH simulations with feedback

Williamson, David John; Thacker, Robert John, 1970-; Wurster, James Howard; Gibson, Brad K. (Oxford University Press, 2014-08-21)

We examine simulations of isolated galaxies to analyse the effects of localized feedback on the formation and evolution of molecular clouds. Feedback contributes to turbulence and the destruction of clouds, leading to a ...
Destruction of massive fragments in protostellar disks and crystalline silicate production

Vorobyov, Eduard I. (IOP Publishing, 2011-02-20)

We present a mechanism for the crystalline silicate production associated with the formation and subsequent destruction of massive fragments in young protostellar disks. The fragments form in the embedded phase of star ...
Dynamics and structure of three-dimensional poloidally magnetized supermagnetosonic jets

Clarke, David A.; Hardee, Philip E.; Rosen, Alexander (American Astronomical Society, 1997-08)

A set of three-dimensional magnetohydrodynamical simulations of supermagnetosonic magnetized jets has been performed. The jets contain an equipartition primarily poloidal magnetic field, and the effect of jet density on ...
Embedded protostellar disks around (sub-)solar stars. II. Disk masses, sizes, densities, temperatures, and the planet formation perspective

Vorobyov, Eduard I. (IOP Publishing Limited, 2011-03-10)

We present basic properties of protostellar disks in the embedded phase of star formation (EPSF), which is difficult to probe observationally using available observational facilities. We use numerical hydrodynamics simulations ...
Formation of cavities in the X-ray emitting cluster gas of Cygnus A

Clarke, David A.; Harris, D. E.; Carilli, C. L. (Royal Astronomical Society and Oxford University Press, 1997)

The ROSAT data from the cluster gas of Cygnus A are re-examined in light of a three-dimensional hydrodynamic simulation of a supersonic jet propagating in an isothermal King atmosphere designed to follow the observed density ...
Halo expansion in cosmological hydro simulations: toward a baryonic solution of the cusp/core problem in massive spirals

Gibson, Brad K.; Maccio, A. V.; Stinson, G.; Brook, C. B.; Wadsley, J.; Couchman, H. M. P.; Shen, S.; Quinn, T. (American Astronomical SocietyIOP Publishing, 2012-01-01)

A clear prediction of the cold dark matter (CDM) model is the existence of cuspy dark matter halo density profiles on all mass scales. This is not in agreement with the observed rotation curves of spiral galaxies, challenging ...
High-velocity-dispersion cold gas in ULIRG Outflows – I. Direct simulations

Williamson, David John; Thacker, Robert John, 1970-; Scannapieco, E.; Bruggen, M. (Oxford University Press, 2014-06)

Observations (e.g. Phillips, Heckman et al., Martin) have revealed cold gas with large velocity dispersions (≈300 km s⁻¹) within the hot outflows of ultraluminous infrared galaxies (ULIRGs). This gas ...
Radial stellar pulsation and three-dimensional convection. II. Two-dimensional convection in full amplitude radial pulsation

Deupree, Robert G. (Robert Gaston), 1946-; Geroux, Chris M. (American Astronomical SocietyIOP Science, 2013-07-10)

We have developed a three-dimensional radiation hydrodynamics code to simulate the interaction of convection and radial pulsation in classical variable stars. One key goal is the ability to carry these simulations to full ...
Radial stellar pulsation and three-dimensional convection. III. Comparison of two-dimensional and three-dimensional convection effects on radial pulsation

Geroux, Christopher M.; Deupree, Robert G. (Robert Gaston), 1946- (American Physical Society, 2014-03-10)

We have developed a multi-dimensional radiation hydrodynamics code to simulate the interaction of radial stellar pulsation and convection for full-amplitude pulsating models. Convection is computed using large eddy ...
The stellar metallicity distribution of disc galaxies and bulges in cosmological simulations

Gibson, Brad K.; Calura, F.; Michel-Dansac, L.; Stinson, G. S.; Dotter, A.; Pilkington, K.; House, E. L.; Brook, C. B.; Few, C. G.; Cignoni, M. (Royal Astronomical Society, 2012-12)

By means of high-resolution cosmological hydrodynamical simulations of Milky Way (MW) like disc galaxies, we conduct an analysis of the associated stellar metallicity distribution functions (MDFs). After undertaking a ...
Thin disc, thick disc and halo in a simulated galaxy

Gibson, Brad K.; Brook, C. B.; Stinson, G. S.; Kawata, D.; House, E. L.; Miranda, M. S.; Maccio, A. V.; Pilkington, K.; Roskar, R.; Wadsley, J. (Royal Astronomical Society, 2012-10)

Within a cosmological hydrodynamical simulation, we form a disc galaxy with subcomponents which can be assigned to a thin stellar disc, thick disc and a low-mass stellar halo via a chemical decomposition. The thin- and ...