Implementation of a separate fluid‐neutral energy equation in <scp>SOLPS‐ITER</scp> and its impact on the validity range of advanced fluid‐neutral models
Wim Van Uytven, Maarten Blommaert, W. Dekeyser, N. Horsten, Martine Baelmans
Abstract
Abstract In plasma edge transport codes for nuclear fusion devices, fluid‐neutral models offer an interesting alternative to the currently used kinetic Monte Carlo simulations, especially for cases of high ion‐neutral collisionality. In this paper, we elaborate a separate neutral energy equation in the state‐of‐the‐art SOLPS‐ITER code suite, which previously assumed perfect ion‐neutral temperature equilibration. Furthermore, we study the coupled plasma‐neutral solutions for a range of divertor operating regimes, proving the validity of these fluid‐neutral models for high‐recycling and detached regimes.
Topics & Concepts
CollisionalityDivertorPlasmaRange (aeronautics)PhysicsFusionMonte Carlo methodNuclear fusionMechanicsStatistical physicsTokamakAtomic physicsMaterials scienceNuclear physicsMathematicsStatisticsLinguisticsComposite materialPhilosophyMagnetic confinement fusion researchFusion materials and technologiesNuclear reactor physics and engineering