Zobrazeno 1 - 10
of 36
pro vyhledávání: '"D. A. Knoll"'
Publikováno v:
Journal of Computational and Theoretical Transport. 43:289-313
An efficient neutron transport-based multiphysics coupling algorithm is developed to model fast-burst reactor dynamics. It extends the previously developed tightly coupled implicit-explicit (IMEX) multiphysics algorithm based on neutron diffusion and
Autor:
Richard L. Williamson, D. A. Knoll
Publikováno v:
Journal of Nuclear Materials. 415:74-83
A powerful multidimensional fuels performance capability, applicable to both steady and transient fuel behavior, is developed based on enhancements to the commercially available ABAQUS general-purpose thermomechanics code. Enhanced capabilities are d
Publikováno v:
Journal of Scientific Computing. 25:213-230
Publikováno v:
Physics of Plasmas. 5:2912-2920
Usually, tokamak core scaling laws are written in terms of dimensionless geometrical quantities and parameters corresponding to Coulomb collisionality, gyro-motion, and plasma beta. However, Lackner [K. Lackner, Comments Plasma Phys. Controlled Fusio
Publikováno v:
Contributions to Plasma Physics. 38:361-366
Autor:
P. R. McHugh, D. A. Knoll
Publikováno v:
SIAM Journal on Scientific Computing. 19:291-301
We study the application of enhanced nonlinear iterative methods to the steady-state solution of a system of two-dimensional convection-diffusion-reaction partial differential equations that describe the partially ionized plasma flow in the boundary
Autor:
J.L. Terry, T. K. Soboleva, D. J. Sigmar, Brian LaBombard, Bruce Lipschultz, A. Yu. Pigarov, Sergei Krasheninnikov, F. Wising, D. A. Knoll
Publikováno v:
Physics of Plasmas. 4:1638-1646
Analysis of the experimental data from tokamaks and linear divertor simulators leads to the conclusion that plasma recombination is a crucial element of plasma detachment. Different mechanisms of plasma recombination relevant to the experimental cond
Publikováno v:
Journal of Nuclear Materials. :369-373
The breakdown of two body scaling laws is illustrated by using the two dimensional plasma code UEDGE coupled to an advanced Navier-Stokes neutrals transport package to model attached and detached regimes in a simplified geometry. Two body similarity
Autor:
D. A. Knoll, Sergei Krasheninnikov, T.D. Rognlien, G.M. McCracken, F. Wising, Bruce Lipschultz, D. J. Sigmar, Brian LaBombard
Publikováno v:
Journal of Nuclear Materials. :273-277
Understanding the physics of divertor detachment is important since detached operation in ITER could reduce the target heat flux drastically, while aiding helium ash removal. In order to model detachment properly we have incorporated a parallel Navie
Publikováno v:
Physics of Plasmas. 3:3358-3368
A combined edge plasma/Navier–Stokes neutral transport model is used to characterize divertor plasma detachment, in the collisional limit for neutrals, on a simplified two‐dimensional slab geometry with Alcator‐C‐MOD‐like plasma conditions