Superior separation of nuclear waste: This advanced centrifuge under development at PPPL can deliver faster, more efficient and more economical separation of nuclear waste than standard centrifuges permit. The device, seen here in a PPPL-produced video, does not rotate as a rigid body, as standard centrifuges do. Instead, the inner cylinder rotates independently of the outer cylinder, creating a fluid flow known as “annular Couette flow” that leads to high-efficiency mass separation and an order-of-magnitude improvement in performance. PPPL photographer Elle Starkman shot the one-minute video, with physicist Erik Gilson narrating how the centrifuge works.
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