超流動ヘリウムにおける量子渦糸の衝突と超流動流れ場の影響

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概要

• 論文の詳細を見る

• The turbulent state of superfluid helium at very low temperatures presents some important and unresolved problems. The turbulent state has a dense tangle of quantized vortex filaments that are characteristic in superfluid. Little is known, however, about their dynamics, particularly, interactive motion. The present paper studies three-dimensional dynamics of two interacting vortex filaments numerically. The equations of motion and the method of numerical calculation follow those of Schwarz. Two identical vortex rings which are initially placed far apart proceed toward the same direction. They gradually become close due to of their interaction, then suddenly collide. The critical distance where the collision occurs is determined by the competition between the local self-induced field of onering and the nonlocal field of the other. The critical distance is grearly influenced by an applied superflow.

• 一般社団法人日本機械学会の論文
• 1993-04-25

著者

• 坪田 誠

  東北大学流体科学研究所

• 前川 進

  東北大学大学院

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• 超流動ヘリウムにおける量子渦糸の衝突と超流動流れ場の影響

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