English

Random Coefficient H-mode Confinement Scalings

Plasma Physics 2018-04-11 v1

Abstract

The random coefficient two-stage regression algorithm with the collisional Maxwell-Vlasov constraint is applied to the ITER H-mode confinement database. The data violate the collisional Maxwell-Vlasov constraint at the 10-30% significance level, probably owing to radiation losses. The dimensionally constrained scaling, τE=0.07192M1/2\tau_E = 0.07192 M^{1/2} (R/a)0.221R1.568κ.3Ip.904Bt.201nˉ0.106P0.493(R/a)^{-0.221} R^{1.568} \kappa^{.3} I_p^{.904} B_t^{.201} \bar{n}^{0.106} P^{-0.493}, is similar to ITER89P with a slightly stronger size dependence.

Cite

@article{arxiv.1804.00063,
  title  = {Random Coefficient H-mode Confinement Scalings},
  author = {Kurt S. Riedel},
  journal= {arXiv preprint arXiv:1804.00063},
  year   = {2018}
}
R2 v1 2026-06-23T01:10:11.980Z