caa a22 4500 386368074 CHVBK 20180307111943.0 cr unu---uuuuu 161130e198904 xx s 000 0 eng 10.1017/S0022377800013891 doi S0022377800013891 pii (NATIONALLICENCE)cambridge-10.1017/S0022377800013891 Hitchon W. N. G. Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, U.S.A. Convective plasma transport modelled with propagators [Elektronische Daten] [W. N. G. Hitchon] The transport of plasma under the influence of a significant flow velocity in a toroidal stellarator has been modelled using an efficient numerical scheme based on ‘propagators'. The particle density has been calculated in a poloidal cross-section from the fluid particle conservation equation, using a flow velocity and a diffusion coefficient derived from experimentally obtained values. The formation of hollow density profiles during ECH has been examined, by varying the flow velocity v(r,θ) of the bulk of the plasma while ensuring that (its component in the minor-radial direction, averaged over poloidal angle θ) is consistent with experiment. A radial flow does not seem to account for the very hollow profiles observed in experiment. Hollownesses of between 1·5 and 5 were obtained for other plausible forms of v(r, θ). Copyright © Cambridge University Press 1989 Journal of Plasma Physics Cambridge University Press 41/2(1989-04), 323-331 0022-3778 41:2<323 1989 41 PLA https://doi.org/10.1017/S0022377800013891 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0022377800013891 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Hitchon W. N. G. Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, U.S.A NATIONALLICENCE 773 0- Journal of Plasma Physics Cambridge University Press 41/2(1989-04), 323-331 0022-3778 41:2<323 1989 41 PLA CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge