On modelling fluid/body interactions, impacts and lift-offs

Frank T. Smith*, Ellen Jolley, Ryan A Palmer

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

1 Citation (Scopus)

Abstract

A description is given of recent progress in the understanding of mechanisms in fluid-body interactions where the motion of a body and the motion of the surrounding fluid affect each other substantially. The mathematical modelling of such unsteady interactions is for internal channel and external near-wall flows in two spatial dimensions and time. The emphasis throughout is on analytical developments with accompanying reduced computation. The successive aspects studied here are interactions and impacts in inviscid flows, skimming and sinking, the lift-off, fly-away or bouncing of a body, and viscous effects including especially the interplay between viscous and inviscid contributions. The main findings are concerned with physical and mechanical insights into impact times, lift-off criteria, the borders between impact and fly-away, the principal parameters and their ranges and the influences from body shape and mass.
Original languageChinese (Traditional)
Article number323019
JournalActa Mechanica Sinica
Volume39
Issue number5
DOIs
Publication statusPublished - 24 Mar 2023

Bibliographical note

Funding Information:
We acknowledge gratefully helpful discussions with colleagues Andrew Ellis, Samire Yazar, Qingsong Liu, T D Dang, Phil Wilson, Kevin Liu, Ted Johnson, Robert Bowles, Sergei Timoshin and with staff at Aerotex UK, namely Colin Hatch, Ian Roberts, Richard Moser and Roger Gent. Support from the Engineering and Physical Sciences Research Council (Grants Nos. EP/R511638/1, GR/T11364/01, EP/G501831/1, EP/H501665/1, and EP/K032208/1), University College London (two IAA awards) and Aerotex UK is also acknowledged with gratitude. Thanks are due to the Beijing International Center for Theoretical and Applied Mechanics for their interest and invitation concerning this article.

Funding Information:
We acknowledge gratefully helpful discussions with colleagues Andrew Ellis, Samire Yazar, Qingsong Liu, T D Dang, Phil Wilson, Kevin Liu, Ted Johnson, Robert Bowles, Sergei Timoshin and with staff at Aerotex UK, namely Colin Hatch, Ian Roberts, Richard Moser and Roger Gent. Support from the Engineering and Physical Sciences Research Council (Grants Nos. EP/R511638/1, GR/T11364/01, EP/G501831/1, EP/H501665/1, and EP/K032208/1), University College London (two IAA awards) and Aerotex UK is also acknowledged with gratitude. Thanks are due to the Beijing International Center for Theoretical and Applied Mechanics for their interest and invitation concerning this article.

Publisher Copyright:
© 2023, The Author(s).

Keywords

  • Fluid-body interactions
  • Skimming
  • Impacts
  • Analysis

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