Browsing Research publications by Title
Now showing items 14701-14720 of 22990
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Numerical modelling of the lobes of radio galaxies in cluster environments
(2013-03-21)We have carried out two-dimensional, axisymmetric, hydrodynamic numerical modelling of the evolution of radio galaxy lobes. The emphasis of our work is on including realistic hot-gas environments in the simulations and on ... -
Numerical modelling of the lobes of radio galaxies in cluster environments -- IV. Remnant radio galaxies
(2019-12-01)We examine the remnant phase of radio galaxies using three-dimensional hydrodynamical simulations of relativistic jets propagating through cluster environments. By switching the jets off once the lobes have reached a certain ... -
Numerical modelling of the lobes of radio galaxies in cluster environments II : Magnetic field configuration and observability
(2014-09-11)We describe three-dimensional magnetohydrodynamical modelling of powerful radio galaxies in realistic poor cluster environments. This modelling extends our earlier work on the hydrodynamics of radio galaxies as a function ... -
Numerical modelling of the lobes of radio galaxies in cluster environments – III. Powerful relativistic and non-relativistic jets
(2016-09-11)We present results from two suites of simulations of powerful radio galaxies in poor cluster environments, with a focus on the formation and evolution of the radio lobes. One suite of models uses relativistic hydrodynamics ... -
Numerical modelling of the lobes of radio galaxies – Paper V: universal pressure profile cluster atmospheres
(2023-09-26)We present relativistic magnetohydrodynamic modelling of jets running into hydrostatic, spherically symmetric cluster atmospheres. For the first time in a numerical simulation, we present model cluster atmospheres based ... -
Numerical Quantification and Temporal Intervals
(2007-09)Arthur Prior states that ‘It will be/was/is that p’ is true iff ‘p’ will be/was/is true, and that is all that needs to be said about the matter. This appears to avoid any need to invoke the existence of non-present entities ... -
Numerical scheme to simulate combined mixing and separating Newtonian fluid flow in a channel
(2013)The paper presents a semi-implicit time-stepping Taylor-Galerkin pressure correction primitive variable finite element algorithm to simulate fluid flow for two dimensional planar combined mixing and separating geometry. ... -
Numerical Simulation of charge stratifications to improve combustion and NO formation of lean-burn SI engines
(2009-08-01)The influences of charge stratification on spark ignition (SI) engine combustion and NO emission were analyzed using a phenomenological model. The mixture in the cylinder was divided spherically into three parts: a central ... -
Numerical simulation of combined mixing and separating flow in channel filled with porous media
(2013-05)Various flow bifurcations are investigated for two dimensional combined mixing and separating geometry. These consist of two reversed channel flows interacting through a gap in the common separating wall filled with porous ... -
Numerical simulation of crack tip behaviour under fatigue loading
(2013)Fatigue damage is a localized phenomenon controlled by the near-tip crack behavior. This paper presents an application of a dislocation distribution technique to the simulation of crack tip behavior under fatigue loading. ... -
Numerical Simulation of Sub-cooled Boiling Flow with Fouling Deposited inside Channels
(2016-06-25)In this article, a numerical simulation has been performed to investigate the sub-cooled boiling flow in axisymmetric channels using the two-phase particle model. The equivalent diameter of the channel is 4.38 mm with 365.7 ... -
Numerical simulation-based pinhole leakage characteristics and hazard boundaries of buried natural gas risers
(2024-04)Corrosion, ageing, and other failure factors pose safety hazards to underground natural gas pipelines. In actual rescue operations, in addition to paying attention to leakage accidents in horizontal pipelines, the severity ... -
Numerical simulations of elliptical galaxies
(Cambridge University Press, 2010) -
Numerical simulations of optical properties of Saharan dust aerosols with emphasis on lidar applications
(2009-02-02)In the framework of the Saharan Mineral Dust Experiment (SAMUM) for the first time the spectral dependence of particle linear depolarization ratios was measured by combining four lidar systems. In this paper these measurements ... -
Numerical simulations of unsteady shock wave interactions using SAC and Fortran-90
(2009)This paper briefly introduces SaC: a data-parallel language with an imperative feel but side-effect free and declarative. The experiences of porting a simulation of unsteady shock waves in the Euler system from Fortran to ... -
Numerical study of real gas effects during bubble collapse using a disequilibrium multiphase model
(2022-11-30)An explicit density-based solver of the Euler equations for inviscid and immiscible gas–liquid flow media is coupled with real-fluid thermodynamic equations of state supporting mild dissociation and calibrated with shock ... -
A numerical study of the effects of wind acting in different directions on clad scaffolds erected around a low-rise building
(Civil-Comp Press, 2011)This paper presents the application of computational fluid dynamics on the analysis of the effects of wind loads on sheeted scaffold structures. This theoretical work has been validated against the experimental results ... -
A numerical study of the interplay between Fermi acceleration mechanisms in radio lobes of FR-II radio galaxies
(2022-11-17)Context: Radio-loud AGNs are thought to possess various sites of particle acceleration, which gives rise to the observed non-thermal spectra. Stochastic turbulent acceleration (STA) and diffusive shock acceleration (DSA) ... -
Numerical study on the heat transfer performance of mine ice-storage cooling device
(2024-05-15)The thermal performance of the ice-storage cooling device used in the underground mine refuge chamber is poor, which causes a waste of energy. Therefore, it is necessary to improve the heat transfer performance of ice ...