TY - JOUR
T1 - Effect of a magnetic field on stability and transitions in liquid breeder flows in a blanket
AU - Smolentsev, Sergey
AU - Vetcha, Naveen
AU - Abdou, Mohamed
PY - 2013
Y1 - 2013
N2 - We review previous studies on instabilities and transitions in magnetohydrodynamic flows in a special context of liquid-metal blanket applications. In the past, possible transitions in blanket flows were mostly attributed to instabilities in the Hartmann layers. More recent studies show, however, that the side layers can experience instabilities at sufficiently lower Reynolds numbers. This suggests that in the blanket flows, the appearance of turbulence can most likely be related to the side rather than Hartmann layers. Various factors that may affect stability in blanket flows have been discussed. In particular, buoyancy forces can result in potentially unstable inflectional velocity profiles. First computational results, illustrating possibility of instabilities and quasi-two-dimensional turbulence in vertical mixed-convection flows heated volumetrically are presented.
AB - We review previous studies on instabilities and transitions in magnetohydrodynamic flows in a special context of liquid-metal blanket applications. In the past, possible transitions in blanket flows were mostly attributed to instabilities in the Hartmann layers. More recent studies show, however, that the side layers can experience instabilities at sufficiently lower Reynolds numbers. This suggests that in the blanket flows, the appearance of turbulence can most likely be related to the side rather than Hartmann layers. Various factors that may affect stability in blanket flows have been discussed. In particular, buoyancy forces can result in potentially unstable inflectional velocity profiles. First computational results, illustrating possibility of instabilities and quasi-two-dimensional turbulence in vertical mixed-convection flows heated volumetrically are presented.
KW - Blanket
KW - MHD flow
KW - Mixed convection
KW - Stability and transitions
UR - http://www.scopus.com/inward/record.url?scp=84885204481&partnerID=8YFLogxK
U2 - 10.1016/j.fusengdes.2013.04.001
DO - 10.1016/j.fusengdes.2013.04.001
M3 - Article
AN - SCOPUS:84885204481
SN - 0920-3796
VL - 88
SP - 607
EP - 610
JO - Fusion Engineering and Design
JF - Fusion Engineering and Design
IS - 6-8
ER -