Stability of explicit radiation-material coupling in radiative transfer calculations Academic Article uri icon

abstract

  • We show that explicit radiation-material coupling, which is essentially always stable for infrared radiative transfer is conditionally stable in the high energy density regime. A linearized stability analysis is first performed for a simple infinite-medium problem that yields both a criterion for unconditional stability, a time-step restriction that applies for conditional stability, and a time-step criterion that always applies for non-oscillatory solutions. This analysis is then extended to include space dependence with the result that the system is always conditionally stable, but with a time step restriction somewhat different from the infinite-medium case. Nonetheless, the time step restriction for non-oscillatory solutions remains the same. Computations are presented that confirm the predictions of our analysis, and conclusions are given. © 2011 Elsevier Ltd.

author list (cited authors)

  • Morel, J. E., & McClarren, R.

citation count

  • 2

complete list of authors

  • Morel, Jim E||McClarren, Ryan

publication date

  • July 2011