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The normal impact of a rigid, shallow body of small deadrise angle with an incompressible, inviscid liquid is investigated. Models of pre-impact air cushioning prior to touchdown are constructed for both parabolic and wedge shaped bodies. These models produce a system of integro-differential equations describing the free-surface and pressure evolution, which is investigated numerically. As impact approaches a pressure build-up occurs in the gas, as the gas is forced out of the path of impactor. This leads to pre-impact free-surface deformations, delays in touchdown and a pocket of gas trapped beneath the impactor, which have consequences for the post-touchdown impact behaviour.
|Title of host publication||Proceedings of the 10th UK Conference on Boundary Integral Methods|
|Publisher||University of Brighton|
|Number of pages||10|
|Publication status||Published - 2015|
|Event||The Tenth UK Conference on Boundary Integral Methods - University of Brighton, Brighton, United Kingdom|
Duration: 13 Jul 2015 → 14 Jul 2015
Conference number: 10
|Conference||The Tenth UK Conference on Boundary Integral Methods|
|Period||13/07/15 → 14/07/15|
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