4 papers
Modeling Temperature Profiles in the Pedestal of NSTX with Reduced Models
P. -Y. Li, D. R. Hatch, L. A. Leppin +5
This paper describes new modeling capabilities for predicting H-mode pedestal profiles in spherical tokamaks. Temperature profiles for NSTX discharges 132543 and 132588 are modeled…
Gyrokinetic Simulations of a Low Recycling Scrape-off Layer without a Lithium Target
Akash Shukla, Jonathan Roeltgen, Michael Kotschenreuther +7
Low-recycling regimes are appealing because they entail a high edge temperature and low edge density which are good for core confinement. However, due to considerably enhanced heat…
Direct Comparison of Gyrokinetic and Fluid Scrape-Off Layer Simulations
A. Shukla, J. Roeltgen, M. Kotschenreuther +7
Typically, fluid simulations are used for tokamak divertor design. However, fluid models are only valid if the SOL is highly collisional, an assumption that is valid in many presen…
The effect of separatrix density and PFC material on H-mode confinement in the ITPA global H-mode database
M. Kotschenreuther, X. Liu, D. R. Hatch +1
Recent data, added to the ITPA global H-mode database [1] for ASDEX-U [2] and JET-ILW, reveals that the separatrix density has a correlation with the H20 factor (Confinem…