TY - JOUR
T1 - Reynolds stress and edge turbulence in TEXTOR
T2 - A comparison between simulations and experiment
AU - Vergote, M.
AU - Van Schoor, M.
AU - Xu, Y.
AU - Jachmich, S.
AU - Weynants, R.
PY - 2007/6/15
Y1 - 2007/6/15
N2 - We discuss the modeling of turbulence by means of a simulation code and compare these simulations to experimental results recently obtained in TEXTOR using a new Reynolds stress probe. The probe, reciprocating on a fast manipulator, allows to track poloidal and radial electric field and density fluctuations, which permits us to compute the (E × B)-velocity fluctuations as well as the Reynolds stress, the fluctuation driven particle fluxes and correlation functions. The simulations are based on the Hasegawa-Wakatani model, completed with curvature and neutral drag terms. We further investigate the potential role Reynolds stresses play in driving or damping the background flows, with the aid of a one dimensional fluid model in which the toroidal geometry is correctly taken into account, while various sources and sinks like viscosity, interaction with neutrals and Reynolds stresses are included.
AB - We discuss the modeling of turbulence by means of a simulation code and compare these simulations to experimental results recently obtained in TEXTOR using a new Reynolds stress probe. The probe, reciprocating on a fast manipulator, allows to track poloidal and radial electric field and density fluctuations, which permits us to compute the (E × B)-velocity fluctuations as well as the Reynolds stress, the fluctuation driven particle fluxes and correlation functions. The simulations are based on the Hasegawa-Wakatani model, completed with curvature and neutral drag terms. We further investigate the potential role Reynolds stresses play in driving or damping the background flows, with the aid of a one dimensional fluid model in which the toroidal geometry is correctly taken into account, while various sources and sinks like viscosity, interaction with neutrals and Reynolds stresses are included.
KW - Cross field transport
KW - Edge modeling
KW - Textor
KW - Turbulence
UR - http://www.scopus.com/inward/record.url?scp=34248550650&partnerID=8YFLogxK
U2 - 10.1016/j.jnucmat.2007.01.142
DO - 10.1016/j.jnucmat.2007.01.142
M3 - Article
AN - SCOPUS:34248550650
SN - 0022-3115
VL - 363-365
SP - 703
EP - 707
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 1-3
ER -