N. Horsten
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View article: Impact of nitrogen molecular breakup on divertor conditions in JET L-mode plasmas using SOLPS-ITER
Impact of nitrogen molecular breakup on divertor conditions in JET L-mode plasmas using SOLPS-ITER Open
Publisher Copyright: © 2025 The Authors
View article: Sensitivity calculation for Monte Carlo particle simulations of neutrals in the plasma edge
Sensitivity calculation for Monte Carlo particle simulations of neutrals in the plasma edge Open
Algorithmic differentiation (AD) is a promising tool to accurately and efficiently compute sensitivities of several code outputs w.r.t. the code input parameters for the complex Monte Carlo code EIRENE. We illustrate the procedure by asses…
View article: Discretization error estimation for <scp>EU‐DEMO</scp> plasma‐edge simulations using <scp>SOLPS‐ITER</scp> with fluid neutrals
Discretization error estimation for <span>EU‐DEMO</span> plasma‐edge simulations using <span>SOLPS‐ITER</span> with fluid neutrals Open
A grid refinement study is performed for mean‐field plasma boundary simulations with fluid neutrals in an EU‐DEMO geometry. In general, grid convergence of the simulations is achieved, with differences between the finest and second‐finest …
View article: Effect of drifts and currents on the validity of a fluid model for the atoms in the plasma edge
Effect of drifts and currents on the validity of a fluid model for the atoms in the plasma edge Open
Funding Information: The first author is funded by a PhD fellowship of the Research Foundation - Flanders . Parts of this work have been carried out within the framework of the EUROfusion Consortium, funded by the European Union via the Eu…
View article: Validation of SOLPS-ITER simulations with kinetic, fluid, and hybrid neutral models for JET-ILW low-confinement mode plasmas
Validation of SOLPS-ITER simulations with kinetic, fluid, and hybrid neutral models for JET-ILW low-confinement mode plasmas Open
For JET L-mode plasmas in low-recycling conditions (electron temperature at the outer strike point, Te,ot≳30eV), SOLPS-ITER simulations agree within the error bars for the experimental profiles at the low-field side (LFS) divertor target. …
View article: Combination of micro–macro and spatially hybrid fluid‐kinetic approach for hydrogenic plasma edge neutrals
Combination of micro–macro and spatially hybrid fluid‐kinetic approach for hydrogenic plasma edge neutrals Open
A new hybrid fluid‐kinetic approach for the hydrogenic neutrals (atoms and molecules) in the plasma edge is presented. The hybrid approach combines a fully kinetic model for the atoms in the low‐collisional regions near the vessel wall, an…
View article: Advanced spatially hybrid fluid‐kinetic modelling of plasma‐edge neutrals and application to <scp>ITER</scp> case using <scp>SOLPS‐ITER</scp>
Advanced spatially hybrid fluid‐kinetic modelling of plasma‐edge neutrals and application to <span>ITER</span> case using <span>SOLPS‐ITER</span> Open
A spatially hybrid fluid‐kinetic approach for the efficient simulation of plasma‐edge neutrals is extended with a kinetic‐fluid condensation process and an automated approach to select a fluid or kinetic treatment at each point along the d…
View article: Fluid, kinetic and hybrid approaches for neutral and trace ion edge transport modelling in fusion devices
Fluid, kinetic and hybrid approaches for neutral and trace ion edge transport modelling in fusion devices Open
Neutral gas physics and neutral interactions with the plasma are key aspects of edge plasma and divertor physics in a fusion reactor including the detachment phenomenon often seen as key to dealing with the power exhaust challenges. A full…
View article: 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
Implementation of a separate fluid‐neutral energy equation in <span>SOLPS‐ITER</span> and its impact on the validity range of advanced fluid‐neutral models Open
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,…
View article: A spatially hybrid fluid-kinetic neutral model for SOLPS-ITER plasma edge simulations
A spatially hybrid fluid-kinetic neutral model for SOLPS-ITER plasma edge simulations Open
Plasma edge transport simulations typically rely on Monte-Carlo simulations for the kinetic neutral transport. However, for detached operating conditions the dominance of charge-exchange reactions between plasma and neutrals leads to exces…
View article: Hybrid fluid-kinetic model for neutral particles in the plasma edge
Hybrid fluid-kinetic model for neutral particles in the plasma edge Open
© 2018 The Authors We elaborate a hybrid fluid-kinetic model for neutral particles in the plasma edge. A macro/fluid model with kinetic corrections in the closure terms of the fluid moment equations is solved in the entire domain. The kine…
View article: Implementation of a consistent fluid‐neutral model in SOLPS‐ITER and benchmark with EIRENE
Implementation of a consistent fluid‐neutral model in SOLPS‐ITER and benchmark with EIRENE Open
In the quest for computationally affordable plasma edge transport simulations of reactor‐relevant plasmas, we consider fluid‐neutral models in this paper. To obtain good agreement with kinetic‐neutral models in charge‐exchange dominated re…
View article: Divertor design through adjoint approaches and efficient code simulation strategies
Divertor design through adjoint approaches and efficient code simulation strategies Open
Divertor power exhaust is one of the main issues to be addressed on the way to reliable fusion power plants. It is generally accepted that at least partially detached operation is essential to mitigate the heat and particle loads to the di…
View article: EUROfusion Integrated Modelling (EU-IM) Capabilities and Selected Physics Applications
EUROfusion Integrated Modelling (EU-IM) Capabilities and Selected Physics Applications Open
Recent developments and achievements of the EUROfusion Code Development for Integrated Modelling project (WPCD, follow-up of EFDA-ITM-TF), which aims at providing a validated integrated modelling suite for the simulation and prediction of …
View article: Development and assessment of 2D fluid neutral models that include atomic databases and a microscopic reflection model
Development and assessment of 2D fluid neutral models that include atomic databases and a microscopic reflection model Open
© 2017 Katholieke Universiteit Leuven. Neutral particles play a crucial role in the plasma edge due to their strong interaction with the plasma. To capture all physics details most often a kinetic equation is solved using a Monte Carlo (MC…
View article: Assessment of fluid neutral models for a detached ITER case
Assessment of fluid neutral models for a detached ITER case Open
© 2016 EURATOM We compare the plasma sources (particle, parallel momentum and ion energy) due to plasma-neutral interactions computed with different fluid neutral models with the sources from a Monte Carlo simulation of the kinetic neutral…
View article: Fluid Neutral Model for Use in Hybrid Neutral Simulations of a Detached Case
Fluid Neutral Model for Use in Hybrid Neutral Simulations of a Detached Case Open
Two fluid neutral models are compared with a finite volume solution of the kinetic neutral equation for a simplified 1D detached case. The neutral equations are coupled to the plasma equations. The first fluid neutral model assumes that ne…
View article: Comparison of fluid neutral models for one-dimensional plasma edge modeling with a finite volume solution of the Boltzmann equation
Comparison of fluid neutral models for one-dimensional plasma edge modeling with a finite volume solution of the Boltzmann equation Open
We derive fluid neutral approximations for a simplified 1D edge plasma model, suitable to study the neutral behavior close to the target of a nuclear fusion divertor, and compare its solutions to the solution of the corresponding kinetic B…