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Bioinspiration & Biomimetics

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Bioinspiration & Biomimetics Volume 1 Number 2 Create an alert RSS this journal

Frank E Fish 2006 Bioinspir. Biomim. 1 R17 doi:10.1088/1748-3182/1/2/R01

The myth and reality of Gray's paradox: implication of dolphin drag reduction for technology

REVIEW ARTICLE

Frank E Fish

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Abstract References Cited By

TOPICAL REVIEW

The inconsistency for the calculated high drag on an actively swimming dolphin and underestimated muscle power available resulted in what has been termed Gray's paradox. Although Gray's paradox was flawed, it has been the inspiration for a variety of drag reduction mechanisms. This review examines the present state of knowledge of drag reduction specific to dolphins. Streamlining and special behaviors provide the greatest drag reduction for dolphins. Mechanisms to control flow by maintaining a completely laminar boundary layer over the body have not been demonstrated for dolphins.


PACS

87.80.-y Biophysical techniques (research methods)

47.85.lb Drag reduction

47.15.Cb Laminar boundary layers

87.19.rs Movement

Subjects

Fluid dynamics

Instrumentation and measurement

Medical physics

Biological physics

Dates

Issue 2 (June 2006)

Received 27 March 2006, accepted for publication 11 May 2006

Published 30 May 2006



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  1. The myth and reality of Gray's paradox: implication of dolphin drag reduction for technology

    Frank E Fish 2006 Bioinspir. Biomim. 1 R17

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