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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

Tritium Breeding / Eighteenth Topical Meeting on the Technology of Fusion Energy (Part 2)

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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