Liquid Li/V alloy blanket

Page 1 : Problems in Liquid Li/V-alloy blanket

Page 2 : Three-surface and multi-layer coated channel

Page 3 : Numerical analysis and experiments
Page 4 : Published Papers

Three-surface and multi-layer coated channel

Reduction of MHD pressure drop is an important issue for liquid Li/V-alloy blanket system. We proposed the three-surface and multi-layer coated channel shown in the following figure, as the solution of MHD pressure drop. The channel is made by inserting a thin plate of vanadium alloy coated with insulated layer onto inner surface of a vanadium alloy rectangular channel.

Three-surface and multi-layer coated channel has advantages of both three-surface coated channel and multi-layer coated channel.

Multi-layer coated channel

- Insulated layer can prevent current from flowing to the channel wall.
- Metal thin plate can avoid crack generation at the insulated layer.

Three-surface coated channel

- There does not exist insulated layer on plasma-facing plane.
- Fabrication of three-surface coated channel is easier than that of four-surface coated channel

We are investigating the capability of the channel to reduce MHD pressure drop by numerical analysis and experiments with a large magnetic field.