Direct Contact Boiling at the Superheat Limit

Lesin, S.; Baron, A.; Branover, H.; Merchuk, José C.

doi:10.1615/ihtc10.580

Cited by 4 publications

(1 citation statement)

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“…where n is the growth rate, k is the wavenumber of the perturbation, and g is the gravitational acceleration. This instability is thought to play roles in terrestrial combustion (see for instance the references in Bychkov and Liberman 2000), astrophysical combustion (Hillebrandt and Niemeyer 2000), and inertial confinement fusion (Piriz and Portugues 2003), as well as at QCD and electroweak transition fronts (Kajantie 1994;Huet et al 1993) with possible astrophysical application to strange stars (Benvenuto et al 1990), polymerization fronts (Allali et al 2001) and evaporation fronts such as of liquid metals (Lesin et al 1993).…”

Section: Landau-darrieus Instabilitymentioning

confidence: 99%

The Linear Instability of Astrophysical Flames in Magnetic Fields

Dursi

2004

ApJ

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Supernovae of Type Ia are used as standard candles for cosmological observations despite the as yet incomplete understanding of their explosion mechanism. In one model, these events are thought to result from subsonic burning in the core of an accreting Carbon/Oxygen white dwarf that is accelerated through flame wrinkling and flame instabilities. Many such white dwarfs have significant magnetic fields. Here we derive the linear effects of such magnetic fields on one flame instability, the well-known Landau-Darrieus instability. When the magnetic field is strong enough that the flame is everywhere sub-Alfvenic, the instability can be greatly suppressed. Super-Alfvenic flames are much less affected by the field, with flames propagating parallel to the field somewh at destabilized, and flames propagating perpendicular to the field somewhat stabili zed. Trans-Alfvenic parallel flames, however, like trans-Alfvenic parallel shocks, are seen to be non-evolutionary; understanding the behavior of these flames will require careful numerical simulation.Comment: 31 pp, 11 fig, submitted to Ap

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