On the efficacy of the direct forcing immersed boundary method as observed in fluid structure interaction
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Date
2015-10-22Author
Chern, M-J
Ernest, O
Horng, TL.
Type
PresentationLanguage
enMetadata
Show full item recordAbstract
Whether one looks inward into the human body or outwards into outer space fluid structure
interaction is evident. A variety of numerical methods hav
e been used to determine the key
characteristic features that accompany fluid structure interaction. Many of these methods rely on
body
-
fitted techniques to setup the computational mesh. The computational costs resulting from the
use of these methods are q
uite prohibitive. As a consequence there has been a mushrooming of
immersed boundary methods, which apply fixed Cartesian meshes. In particular, the direct forcing
immersed boundary method has gained popularity due to the simplicity with which the forcing
function is formulated. In the following, we present different scenarios that have been used as
setups for testing the robustness of the direct forcing immersed boundary method. The method has
been applied to the interaction between uniform fluid flow and
both stationary and moving rigid
bodies. Further, the method has also been trialed on the interaction between oscillatory fluid flow
and rigid bodies. Vorticity patterns have been provided to detail the mechanism of the fluid
structure interaction. Amplitu
de and frequency response data are also presented precisely to
highlight their behavior at various reduced velocities. The results acquired have been found to be
comparable to published experimental and alternative numerical data
Citation
Chern M-J, Ernest O, Horng TL. "On the Efficacy of the Direct Forcing Immersed Boundary Method as Observed in Fluid Structure Interaction.". In: First Association of Computational Mechanics Taiwan Conference. Taipei; 2015.Publisher
University of Nairobi