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Magnetohydrodynamic flow in the European Tauro blanket concept

Leo Bühler2002年Fusion Engineering and DesignIF 1.7出版社

AbstractAn analysis of the magnetohydrodynamic (MHD) flow in the European Tauro blanket concept using ceramic wall material shows that even for poor conducting walls an electric coupling of neighboring channels is possible. Currents within the wall along the tangential direction remain negligible in comparison with those in the Hartmann layers or those crossing dividing walls. The flow structure and pressure drop is evaluated for the designed geometry for both cases, for perfect insulation of the walls and for finite wall-normal conductance. It is shown that the increase of pressure drop with the wall-normal conductivity is not really a crucial issue. However, the results show that the flow pattern may become unfavorable for heat transfer when the wall-normal electric conductivity exceeds a critical value.

日本語訳

セラミック壁材を用いた欧州ブランケット概念における電磁流体力学(MHD)流れの解析により、導電性の低い壁であっても隣接するチャネル間の電気的結合が生じ得ることが示された。接線方向に沿った壁内電流は、ハルトマン層内の電流や隔壁を横切る電流と比較して無視できる程度である。設計された幾何形状について、壁が完全に絶縁されている場合と、壁法線方向の有限な導電率を有する場合の両方に対して、流れ構造と圧力損失が評価された。圧力損失の増加は壁法線方向の導電率に伴って生じるが、これは決定的な問題ではないことが示された。しかしながら、結果は、壁法線方向の電気伝導度が臨界値を超えると、流れパターンが熱伝達にとって不利になる可能性があることを示している。

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Magnetohydrodynamics
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