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Theoretical Study of Mixed Convection in Poloidal Flows of DCLL Blanket

N. Vetcha, S. Smolentsev, M. Abdou

Fusion Science and Technology

Volume 56 / Number 2 / August 2009 / Pages 851-855


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An approach is developed to study the stability of mixed convection in the poloidal flows of the DCLL blanket. Modified Orr-Sommerfeld equations are derived and then solved using a numerical code based on a pseudo-spectral method. The stability analysis has been performed for the flows in the front blanket ducts, where the forced flow is upwards; showing that in the DCLL blanket conditions, all disturbances associated with the buoyant flows in the front ducts will likely be damped by a strong toroidal magnetic field.

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