Confinement scaling laws for the conventional reversed-field pinch
A series of high resolution, 3D, resistive MHD numerical simulations of the reversed-field pinch are performed to obtain scaling laws for poloidal beta and energy confinement at Lundquist numbers approaching 10(6). Optimum plasma conditions are attained by taking the transport coefficients to be classical, and ignoring radiation losses and resistive wall effects. We find that poloidal beta scales as beta(straight theta) approximately I-0.40 and that the energy confinement time scales as tau(E) approximately I0.34 for fixed I/N, with aspect ratio R/a = 1.25.
Scheffel
J
Fusion Plasma Physics, Alfven Laboratory (Association EURATOM-NFR), Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
Schnack
DD