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2019 | 64 | 4 |
Tytuł artykułu

Hydrodynamic performance of psammosteids: New insights from computational fluid dynamics simulations

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Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The shape of dermal armor protecting the body in the Paleozoic agnathans such as the Heterostaci has an important hydrodynamic role in providing lift or drag force generation. Here, by performing computational fluid dynamics simulations (CFD), the measurements of hydrodynamic lift/ drag force and lift or drag coefficients were taken for two psammosteids Guerichosteus and Tartuosteus with reference to the pteraspid Errivaspis. This study shows the substantially higher values of the lift coefficient and lift-to-drag ratio for the psammosteids Guerichosteus and Tartuosteus compared with Errivaspis. The tendencies in the evolution of dermal exoskeleton, especially the widening of the branchial plates of psammosteids was directed towards the increased generation of lift force to provide efficient cruising.
Słowa kluczowe
Wydawca
-
Rocznik
Tom
64
Numer
4
Opis fizyczny
p.679-684,fig.,ref.
Twórcy
autor
  • Institute of Palaeobiology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warsaw, Poland
Bibliografia
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Typ dokumentu
Bibliografia
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