Last Updated
：2025/11/23
scallop theorem
Noun
Japanese Meaning
低レイノルズ数の単純流体（ニュートン流体）において推進を実現するには、泳者が時間反転に不変でない形状変化（非対称な運動）を行う必要があることを示す定理
（ plural ）
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(fluid dynamics) A theorem which states that to achieve propulsion at low Reynolds number in simple (i.e. Newtonian) fluids, a swimmer must deform in a way that is not invariant under time-reversal.
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scallop theorem
The scallop theorem shows that a swimmer performing simple reciprocal motion cannot achieve net propulsion in a Newtonian fluid at low Reynolds number.
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The scallop theorem shows that a swimmer performing simple reciprocal motion cannot achieve net propulsion in a Newtonian fluid at low Reynolds number.
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