Results 51 to 60 of about 617,651 (370)
The Dominance of Neutrino-Driven Convection in Core-Collapse Supernovae [PDF]
, 2012 Multi-dimensional instabilities have become an important ingredient in core-collapse supernova (CCSN) theory. Therefore, it is necessary to understand the driving mechanism of the dominant instability. We compare our parameterized three-dimensional CCSN simulations with other buoyancy-driven simulations and propose scaling relations for neutrino-driven
arxiv +1 more source
Numerical prediction of mixed convection heat transfer in an enclosure [PDF]
, 2012 In this article the transport mechanism of laminar mixed convection in a shear and buoyancy driven cavity flow with locally heated lower wall and moving cooled sidewalls is numerically studied using cubic interpolation profile method.
Che Sidik, Nor Azwadi, Salehi, Mehran
core
Role of defects in the onset of wall-induced granular convection [PDF]
, 2015 We investigate the onset of the wall-induced convection in vertically vibrated granular matter by means of experiments and two-dimensional computer simulations.
Fortini, Andrea, Huang, Kai
core +2 more sources
Impact of Iron Contamination on Liquid Properties and Microstructural Evolution in AlSi20
Advanced Engineering Materials, EarlyView.Recycled aluminum is much more energy conservative and sustainable than primary aluminum. However, the iron contamination in secondary aluminum is vastly responsible for the degradation of the material properties. Herein, it is aimed to evaluate the influence of iron contamination in hypereutectic Al–Si alloy through thermodynamic as well as ...
Layla Shams Tisha +2 more
wiley +1 more source
Convective velocity suppression via the enhancement of subadiabatic layer: Role of the effective Prandtl number [PDF]
, 2017 It has recently been recognized that the convective velocities achieved in the current solar convection simulations might be over-estimated. The newly-revealed effects of the prevailing small-scale magnetic field within the convection zone may offer possible solutions to this problem.
arxiv +1 more source
Reynolds stress models of convection in convective cores [PDF]
Proceedings of the International Astronomical Union, 2006 AbstractWe investigate the properties of non-local Reynolds stress models of turbulent convection in a spherical geometry. Regularity at the centre r=0 places constraints on the behaviour of 3rd order moments. Some of the down-gradient and algebraic closure models have inconsistent behaviour at r=0. A combination of down-gradient and algebraic closures
Roxburgh, Ian W., Kupka, Friedrich
openaire +2 more sources
Diffusion from convection [PDF]
SciPost Physics, 2020 We introduce non-trivial contributions to diffusion constants in generic many-body systems with Hamiltonian dynamics arising from quadratic fluctuations of ballistically propagating, i.e. convective, modes. Our result is obtained by expanding the current operator in terms of powers of local and quasi-local conserved quantities.
Jacopo De Nardis +3 more
openaire +6 more sources
Collective phase description of oscillatory convection
, 2013 We formulate a theory for the collective phase description of oscillatory convection in Hele-Shaw cells. It enables us to describe the dynamics of the oscillatory convection by a single degree of freedom which we call the collective phase. The theory can
KAWAMURA, YOJI +3 more
core +1 more source
Advanced Engineering Materials, EarlyView.An electronic system is presented consisting of a silver thin‐film electrode on a polyimide substrate working both as a heating element and a resistive temperature sensor, generating millisecond heat pulses with very fast heating and cooling rates and a flat peak temperature with a tunable duration.
Bahman K. Boroujeni +5 more
wiley +1 more source
The Influence of Surface Radiation on the Passive Cooling of a Heat-Generating Element
Energies, 2019 Low-power electronic devices are suitably cooled by thermogravitational convection and radiation. The use of modern methods of computational mechanics makes it possible to develop efficient passive cooling systems.
Igor V. Miroshnichenko +2 more
doaj +1 more source