skip to main content

SciTech ConnectSciTech Connect

Title: A modeling approach for heat conduction and radiation diffusion in plasma-photon mixture in temperature nonequilibrium

We present a simple approach for determining ion, electron, and radiation temperatures of heterogeneous plasma-photon mixtures, in which temperatures depend on both material type and morphology of the mixture. The solution technique is composed of solving ion, electron, and radiation energy equations for both mixed and pure phases of each material in zones containing random mixture and solving pure material energy equations in subdivided zones using interface reconstruction. Application of interface reconstruction is determined by the material configuration in the surrounding zones. In subdivided zones, subzonal inter-material energy exchanges are calculated by heat fluxes across the material interfaces. Inter-material energy exchange in zones with random mixtures is modeled using the length scale and contact surface area models. In those zones, inter-zonal heat flux in each material is determined using the volume fractions.
Authors:
 [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
OSTI Identifier:
1304795
Report Number(s):
LA-UR--16-26392
TRN: US1601797
DOE Contract Number:
AC52-06NA25396
Resource Type:
Technical Report
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; THERMAL CONDUCTION; PHOTONS; MIXTURES; ELECTRON TEMPERATURE; ZONES; ION TEMPERATURE; INTERFACES; PLASMA; HEAT FLUX; DIFFUSION; EQUATIONS; COMPUTERIZED SIMULATION; MATHEMATICAL SOLUTIONS; CONFIGURATION