LM-MHD Simulation Development and Recent Results. Presented by Sergey Smolentsev (UCLA) with contribution from: R. Munipalli, P. Huang (HyPerComp) M. Abdou, N. Morley, K. Messadek, N. Vetcha, D. Sutevski (UCLA) R. Moreau (SIMAP, France) Z. Xu (SWIP, China).
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Presented by Sergey Smolentsev (UCLA)
with contribution from:
R. Munipalli, P. Huang (HyPerComp)
M. Abdou, N. Morley, K. Messadek, N. Vetcha, D. Sutevski (UCLA)
R. Moreau (SIMAP, France)
Z. Xu (SWIP, China)
*- not applicable or low importance; ** - important; *** - very important
OTHER RELATED PRESENTATIONS at THIS MEETING
In the DCLL blanket conditions,
the poloidal flows are expected
to be hydrodynamically unstable and
Tendency to quasi-two-dimensional state as Ha number is increased has been demonstrated for both velocity and temperature field
Wall functions BC
Wall functions BC
Major assumptions of the 1D theory
have been verified with 3D modeling.
1D/3D comparison is fair
Internal shear layersMHD turbulence, instability and transitions
Direct Numerical Simulation of Q2D MHD turbulence
The next few movies will illustrate major findings, namely:
Type I (primarily) instability (Re=2500, Ha=200)
Transition from Type I to Type II instability and evolvement of MHD turbulence
M.S. TILLACK, S. MALANG, “High Performance PbLi Blanket,” Proc.17th IEE/NPSS Symposium on Fusion Engineering, Vol.2, 1000-1004, San Diego, California, Oct.6-10, 1997.
Poloidal duct of the DCLL blanket
with FCI and helium channels
Modeling was performed under the experimental conditions
using the fully developed flow model first (2009) and then in 3D (2010) using HIMAG
2D modeling, previous
2Modeling FCI experiment in China
S. SMOLENTSEV, Z.XU, C.PAN, M.ABDOU, Numerical and Experimental Studies of MHD flow in a Rectangular Duct with a Non-Conducting Flow Insert, Magnetohydrodynamics, 46, 99-111 (2010).
Pressure drop coefficient
In this figure jx (axial current) is plotted:
1 – axial current in the gap, just above the slot
2 – return current