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

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