LOAD AND MOTION TRANSFER ALGORITHMS FOR FLUID STRUCTURE INTERACTION PROBLEMS WITH NONMATCHING DISCRETE INTERFACES - MOMENTUM AND ENERGY-CONSERVATION, OPTIMAL DISCRETIZATION AND APPLICATION TO AEROELASTICITY/
C. Farhat et al., LOAD AND MOTION TRANSFER ALGORITHMS FOR FLUID STRUCTURE INTERACTION PROBLEMS WITH NONMATCHING DISCRETE INTERFACES - MOMENTUM AND ENERGY-CONSERVATION, OPTIMAL DISCRETIZATION AND APPLICATION TO AEROELASTICITY/, Computer methods in applied mechanics and engineering, 157(1-2), 1998, pp. 95-114
The prediction of many fluid/structure interaction phenomena requires
solving simultaneously the coupled fluid and structural equations of e
quilibrium with an appropriate set of interface boundary conditions. I
n this paper, we consider the realistic situation where the fluid and
structure subproblems have different resolution requirements and their
computational domains have non-matching discrete interfaces, and addr
ess the proper discretization of the governing interface boundary cond
itions. We present and overview new and common algorithms for converti
ng the fluid pressure and stress fields at the fluid/structure interfa
ce into a structural load, and for transferring the structural motion
to the fluid system. We discuss the merits of these algorithms in term
s of conservation properties and solution accuracy, and distinguish be
tween theoretically important and practically significant issues. We v
alidate our claims and illustrate our conclusions with several transie
nt aeroelastic simulations. (C) 1998 Elsevier Science S.A.