Fluid-wall interactions

The object of this work is the modelling ann the analysis of fluid-wall int eractions in a cylindrical cavity with a unique orifice serving both as inf low and outflow of an incompressible fluid. The analysis shows that the sys tem's behavior is governed by the values of five dimensionless characterist ic parameters. The coupled equations system is then approximated by using a staggered scheme which enables to integrate the structure and the fluid pa rts separately during each time step. A numerical solution is given with th e respective influence of each introduced parameter. We conclude by giving an approximation of the viscous friction effects allowing to uncouple the s ystem of equations. (C) 2000 Academic des sciences/Editions scientifiques e t medicales Elsevier SAS.